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Diffstat (limited to 'lib/hadoop-0.20.0/CHANGES.txt')
| -rw-r--r-- | lib/hadoop-0.20.0/CHANGES.txt | 8288 |
1 files changed, 0 insertions, 8288 deletions
diff --git a/lib/hadoop-0.20.0/CHANGES.txt b/lib/hadoop-0.20.0/CHANGES.txt deleted file mode 100644 index 95c8b5c08b..0000000000 --- a/lib/hadoop-0.20.0/CHANGES.txt +++ /dev/null @@ -1,8288 +0,0 @@ -Hadoop Change Log - -Release 0.20.0 - 2009-04-15 - - INCOMPATIBLE CHANGES - - HADOOP-4210. Fix findbugs warnings for equals implementations of mapred ID - classes. Removed public, static ID::read and ID::forName; made ID an - abstract class. (Suresh Srinivas via cdouglas) - - HADOOP-4253. Fix various warnings generated by findbugs. - Following deprecated methods in RawLocalFileSystem are removed: - public String getName() - public void lock(Path p, boolean shared) - public void release(Path p) - (Suresh Srinivas via johan) - - HADOOP-4618. Move http server from FSNamesystem into NameNode. - FSNamesystem.getNameNodeInfoPort() is removed. - FSNamesystem.getDFSNameNodeMachine() and FSNamesystem.getDFSNameNodePort() - replaced by FSNamesystem.getDFSNameNodeAddress(). - NameNode(bindAddress, conf) is removed. - (shv) - - HADOOP-4567. GetFileBlockLocations returns the NetworkTopology - information of the machines where the blocks reside. (dhruba) - - HADOOP-4435. The JobTracker WebUI displays the amount of heap memory - in use. (dhruba) - - HADOOP-4628. Move Hive into a standalone subproject. (omalley) - - HADOOP-4188. Removes task's dependency on concrete filesystems. - (Sharad Agarwal via ddas) - - HADOOP-1650. Upgrade to Jetty 6. (cdouglas) - - HADOOP-3986. Remove static Configuration from JobClient. (Amareshwari - Sriramadasu via cdouglas) - JobClient::setCommandLineConfig is removed - JobClient::getCommandLineConfig is removed - JobShell, TestJobShell classes are removed - - HADOOP-4422. S3 file systems should not create bucket. - (David Phillips via tomwhite) - - HADOOP-4035. Support memory based scheduling in capacity scheduler. - (Vinod Kumar Vavilapalli via yhemanth) - - HADOOP-3497. Fix bug in overly restrictive file globbing with a - PathFilter. (tomwhite) - - HADOOP-4445. Replace running task counts with running task - percentage in capacity scheduler UI. (Sreekanth Ramakrishnan via - yhemanth) - - HADOOP-4631. Splits the configuration into three parts - one for core, - one for mapred and the last one for HDFS. (Sharad Agarwal via cdouglas) - - HADOOP-3344. Fix libhdfs build to use autoconf and build the same - architecture (32 vs 64 bit) of the JVM running Ant. The libraries for - pipes, utils, and libhdfs are now all in c++/<os_osarch_jvmdatamodel>/lib. - (Giridharan Kesavan via nigel) - - HADOOP-4874. Remove LZO codec because of licensing issues. (omalley) - - HADOOP-4970. The full path name of a file is preserved inside Trash. - (Prasad Chakka via dhruba) - - HADOOP-4103. NameNode keeps a count of missing blocks. It warns on - WebUI if there are such blocks. '-report' and '-metaSave' have extra - info to track such blocks. (Raghu Angadi) - - HADOOP-4783. Change permissions on history files on the jobtracker - to be only group readable instead of world readable. - (Amareshwari Sriramadasu via yhemanth) - - HADOOP-5531. Removed Chukwa from Hadoop 0.20.0. (nigel) - - NEW FEATURES - - HADOOP-4575. Add a proxy service for relaying HsftpFileSystem requests. - Includes client authentication via user certificates and config-based - access control. (Kan Zhang via cdouglas) - - HADOOP-4661. Add DistCh, a new tool for distributed ch{mod,own,grp}. - (szetszwo) - - HADOOP-4709. Add several new features and bug fixes to Chukwa. - Added Hadoop Infrastructure Care Center (UI for visualize data collected - by Chukwa) - Added FileAdaptor for streaming small file in one chunk - Added compression to archive and demux output - Added unit tests and validation for agent, collector, and demux map - reduce job - Added database loader for loading demux output (sequence file) to jdbc - connected database - Added algorithm to distribute collector load more evenly - (Jerome Boulon, Eric Yang, Andy Konwinski, Ariel Rabkin via cdouglas) - - HADOOP-4179. Add Vaidya tool to analyze map/reduce job logs for performanc - problems. (Suhas Gogate via omalley) - - HADOOP-4029. Add NameNode storage information to the dfshealth page and - move DataNode information to a separated page. (Boris Shkolnik via - szetszwo) - - HADOOP-4348. Add service-level authorization for Hadoop. (acmurthy) - - HADOOP-4826. Introduce admin command saveNamespace. (shv) - - HADOOP-3063 BloomMapFile - fail-fast version of MapFile for sparsely - populated key space (Andrzej Bialecki via stack) - - HADOOP-1230. Add new map/reduce API and deprecate the old one. Generally, - the old code should work without problem. The new api is in - org.apache.hadoop.mapreduce and the old classes in org.apache.hadoop.mapred - are deprecated. Differences in the new API: - 1. All of the methods take Context objects that allow us to add new - methods without breaking compatability. - 2. Mapper and Reducer now have a "run" method that is called once and - contains the control loop for the task, which lets applications - replace it. - 3. Mapper and Reducer by default are Identity Mapper and Reducer. - 4. The FileOutputFormats use part-r-00000 for the output of reduce 0 and - part-m-00000 for the output of map 0. - 5. The reduce grouping comparator now uses the raw compare instead of - object compare. - 6. The number of maps in FileInputFormat is controlled by min and max - split size rather than min size and the desired number of maps. - (omalley) - - HADOOP-3305. Use Ivy to manage dependencies. (Giridharan Kesavan - and Steve Loughran via cutting) - - IMPROVEMENTS - - HADOOP-4565. Added CombineFileInputFormat to use data locality information - to create splits. (dhruba via zshao) - - HADOOP-4749. Added a new counter REDUCE_INPUT_BYTES. (Yongqiang He via - zshao) - - HADOOP-4234. Fix KFS "glue" layer to allow applications to interface - with multiple KFS metaservers. (Sriram Rao via lohit) - - HADOOP-4245. Update to latest version of KFS "glue" library jar. - (Sriram Rao via lohit) - - HADOOP-4244. Change test-patch.sh to check Eclipse classpath no matter - it is run by Hudson or not. (szetszwo) - - HADOOP-3180. Add name of missing class to WritableName.getClass - IOException. (Pete Wyckoff via omalley) - - HADOOP-4178. Make the capacity scheduler's default values configurable. - (Sreekanth Ramakrishnan via omalley) - - HADOOP-4262. Generate better error message when client exception has null - message. (stevel via omalley) - - HADOOP-4226. Refactor and document LineReader to make it more readily - understandable. (Yuri Pradkin via cdouglas) - - HADOOP-4238. When listing jobs, if scheduling information isn't available - print NA instead of empty output. (Sreekanth Ramakrishnan via johan) - - HADOOP-4284. Support filters that apply to all requests, or global filters, - to HttpServer. (Kan Zhang via cdouglas) - - HADOOP-4276. Improve the hashing functions and deserialization of the - mapred ID classes. (omalley) - - HADOOP-4485. Add a compile-native ant task, as a shorthand. (enis) - - HADOOP-4454. Allow # comments in slaves file. (Rama Ramasamy via omalley) - - HADOOP-3461. Remove hdfs.StringBytesWritable. (szetszwo) - - HADOOP-4437. Use Halton sequence instead of java.util.Random in - PiEstimator. (szetszwo) - - HADOOP-4572. Change INode and its sub-classes to package private. - (szetszwo) - - HADOOP-4187. Does a runtime lookup for JobConf/JobConfigurable, and if - found, invokes the appropriate configure method. (Sharad Agarwal via ddas) - - HADOOP-4453. Improve ssl configuration and handling in HsftpFileSystem, - particularly when used with DistCp. (Kan Zhang via cdouglas) - - HADOOP-4583. Several code optimizations in HDFS. (Suresh Srinivas via - szetszwo) - - HADOOP-3923. Remove org.apache.hadoop.mapred.StatusHttpServer. (szetszwo) - - HADOOP-4622. Explicitly specify interpretor for non-native - pipes binaries. (Fredrik Hedberg via johan) - - HADOOP-4505. Add a unit test to test faulty setup task and cleanup - task killing the job. (Amareshwari Sriramadasu via johan) - - HADOOP-4608. Don't print a stack trace when the example driver gets an - unknown program to run. (Edward Yoon via omalley) - - HADOOP-4645. Package HdfsProxy contrib project without the extra level - of directories. (Kan Zhang via omalley) - - HADOOP-4126. Allow access to HDFS web UI on EC2 (tomwhite via omalley) - - HADOOP-4612. Removes RunJar's dependency on JobClient. - (Sharad Agarwal via ddas) - - HADOOP-4185. Adds setVerifyChecksum() method to FileSystem. - (Sharad Agarwal via ddas) - - HADOOP-4523. Prevent too many tasks scheduled on a node from bringing - it down by monitoring for cumulative memory usage across tasks. - (Vinod Kumar Vavilapalli via yhemanth) - - HADOOP-4640. Adds an input format that can split lzo compressed - text files. (johan) - - HADOOP-4666. Launch reduces only after a few maps have run in the - Fair Scheduler. (Matei Zaharia via johan) - - HADOOP-4339. Remove redundant calls from FileSystem/FsShell when - generating/processing ContentSummary. (David Phillips via cdouglas) - - HADOOP-2774. Add counters tracking records spilled to disk in MapTask and - ReduceTask. (Ravi Gummadi via cdouglas) - - HADOOP-4513. Initialize jobs asynchronously in the capacity scheduler. - (Sreekanth Ramakrishnan via yhemanth) - - HADOOP-4649. Improve abstraction for spill indices. (cdouglas) - - HADOOP-3770. Add gridmix2, an iteration on the gridmix benchmark. (Runping - Qi via cdouglas) - - HADOOP-4708. Add support for dfsadmin commands in TestCLI. (Boris Shkolnik - via cdouglas) - - HADOOP-4758. Add a splitter for metrics contexts to support more than one - type of collector. (cdouglas) - - HADOOP-4722. Add tests for dfsadmin quota error messages. (Boris Shkolnik - via cdouglas) - - HADOOP-4690. fuse-dfs - create source file/function + utils + config + - main source files. (pete wyckoff via mahadev) - - HADOOP-3750. Fix and enforce module dependencies. (Sharad Agarwal via - tomwhite) - - HADOOP-4747. Speed up FsShell::ls by removing redundant calls to the - filesystem. (David Phillips via cdouglas) - - HADOOP-4305. Improves the blacklisting strategy, whereby, tasktrackers - that are blacklisted are not given tasks to run from other jobs, subject - to the following conditions (all must be met): - 1) The TaskTracker has been blacklisted by at least 4 jobs (configurable) - 2) The TaskTracker has been blacklisted 50% more number of times than - the average (configurable) - 3) The cluster has less than 50% trackers blacklisted - Once in 24 hours, a TaskTracker blacklisted for all jobs is given a chance. - Restarting the TaskTracker moves it out of the blacklist. - (Amareshwari Sriramadasu via ddas) - - HADOOP-4688. Modify the MiniMRDFSSort unit test to spill multiple times, - exercising the map-side merge code. (cdouglas) - - HADOOP-4737. Adds the KILLED notification when jobs get killed. - (Amareshwari Sriramadasu via ddas) - - HADOOP-4728. Add a test exercising different namenode configurations. - (Boris Shkolnik via cdouglas) - - HADOOP-4807. Adds JobClient commands to get the active/blacklisted tracker - names. Also adds commands to display running/completed task attempt IDs. - (ddas) - - HADOOP-4699. Remove checksum validation from map output servlet. (cdouglas) - - HADOOP-4838. Added a registry to automate metrics and mbeans management. - (Sanjay Radia via acmurthy) - - HADOOP-3136. Fixed the default scheduler to assign multiple tasks to each - tasktracker per heartbeat, when feasible. To ensure locality isn't hurt - too badly, the scheudler will not assign more than one off-switch task per - heartbeat. The heartbeat interval is also halved since the task-tracker is - fixed to no longer send out heartbeats on each task completion. A - slow-start for scheduling reduces is introduced to ensure that reduces - aren't started till sufficient number of maps are done, else reduces of - jobs whose maps aren't scheduled might swamp the cluster. - Configuration changes to mapred-default.xml: - add mapred.reduce.slowstart.completed.maps - (acmurthy) - - HADOOP-4545. Add example and test case of secondary sort for the reduce. - (omalley) - - HADOOP-4753. Refactor gridmix2 to reduce code duplication. (cdouglas) - - HADOOP-4909. Fix Javadoc and make some of the API more consistent in their - use of the JobContext instead of Configuration. (omalley) - - HADOOP-4830. Add end-to-end test cases for testing queue capacities. - (Vinod Kumar Vavilapalli via yhemanth) - - HADOOP-4980. Improve code layout of capacity scheduler to make it - easier to fix some blocker bugs. (Vivek Ratan via yhemanth) - - HADOOP-4916. Make user/location of Chukwa installation configurable by an - external properties file. (Eric Yang via cdouglas) - - HADOOP-4950. Make the CompressorStream, DecompressorStream, - BlockCompressorStream, and BlockDecompressorStream public to facilitate - non-Hadoop codecs. (omalley) - - HADOOP-4843. Collect job history and configuration in Chukwa. (Eric Yang - via cdouglas) - - HADOOP-5030. Build Chukwa RPM to install into configured directory. (Eric - Yang via cdouglas) - - HADOOP-4828. Updates documents to do with configuration (HADOOP-4631). - (Sharad Agarwal via ddas) - - HADOOP-4939. Adds a test that would inject random failures for tasks in - large jobs and would also inject TaskTracker failures. (ddas) - - HADOOP-4920. Stop storing Forrest output in Subversion. (cutting) - - HADOOP-4944. A configuration file can include other configuration - files. (Rama Ramasamy via dhruba) - - HADOOP-4804. Provide Forrest documentation for the Fair Scheduler. - (Sreekanth Ramakrishnan via yhemanth) - - HADOOP-5248. A testcase that checks for the existence of job directory - after the job completes. Fails if it exists. (ddas) - - HADOOP-4664. Introduces multiple job initialization threads, where the - number of threads are configurable via mapred.jobinit.threads. - (Matei Zaharia and Jothi Padmanabhan via ddas) - - HADOOP-4191. Adds a testcase for JobHistory. (Ravi Gummadi via ddas) - - HADOOP-5466. Change documenation CSS style for headers and code. (Corinne - Chandel via szetszwo) - - HADOOP-5275. Add ivy directory and files to built tar. - (Giridharan Kesavan via nigel) - - HADOOP-5468. Add sub-menus to forrest documentation and make some minor - edits. (Corinne Chandel via szetszwo) - - HADOOP-5437. Fix TestMiniMRDFSSort to properly test jvm-reuse. (omalley) - - HADOOP-5521. Removes dependency of TestJobInProgress on RESTART_COUNT - JobHistory tag. (Ravi Gummadi via ddas) - - OPTIMIZATIONS - - HADOOP-3293. Fixes FileInputFormat to do provide locations for splits - based on the rack/host that has the most number of bytes. - (Jothi Padmanabhan via ddas) - - HADOOP-4683. Fixes Reduce shuffle scheduler to invoke - getMapCompletionEvents in a separate thread. (Jothi Padmanabhan - via ddas) - - BUG FIXES - - HADOOP-5379. CBZip2InputStream to throw IOException on data crc error. - (Rodrigo Schmidt via zshao) - - HADOOP-5326. Fixes CBZip2OutputStream data corruption problem. - (Rodrigo Schmidt via zshao) - - HADOOP-4204. Fix findbugs warnings related to unused variables, naive - Number subclass instantiation, Map iteration, and badly scoped inner - classes. (Suresh Srinivas via cdouglas) - - HADOOP-4207. Update derby jar file to release 10.4.2 release. - (Prasad Chakka via dhruba) - - HADOOP-4325. SocketInputStream.read() should return -1 in case EOF. - (Raghu Angadi) - - HADOOP-4408. FsAction functions need not create new objects. (cdouglas) - - HADOOP-4440. TestJobInProgressListener tests for jobs killed in queued - state (Amar Kamat via ddas) - - HADOOP-4346. Implement blocking connect so that Hadoop is not affected - by selector problem with JDK default implementation. (Raghu Angadi) - - HADOOP-4388. If there are invalid blocks in the transfer list, Datanode - should handle them and keep transferring the remaining blocks. (Suresh - Srinivas via szetszwo) - - HADOOP-4587. Fix a typo in Mapper javadoc. (Koji Noguchi via szetszwo) - - HADOOP-4530. In fsck, HttpServletResponse sendError fails with - IllegalStateException. (hairong) - - HADOOP-4377. Fix a race condition in directory creation in - NativeS3FileSystem. (David Phillips via cdouglas) - - HADOOP-4621. Fix javadoc warnings caused by duplicate jars. (Kan Zhang via - cdouglas) - - HADOOP-4566. Deploy new hive code to support more types. - (Zheng Shao via dhruba) - - HADOOP-4571. Add chukwa conf files to svn:ignore list. (Eric Yang via - szetszwo) - - HADOOP-4589. Correct PiEstimator output messages and improve the code - readability. (szetszwo) - - HADOOP-4650. Correct a mismatch between the default value of - local.cache.size in the config and the source. (Jeff Hammerbacher via - cdouglas) - - HADOOP-4606. Fix cygpath error if the log directory does not exist. - (szetszwo via omalley) - - HADOOP-4141. Fix bug in ScriptBasedMapping causing potential infinite - loop on misconfigured hadoop-site. (Aaron Kimball via tomwhite) - - HADOOP-4691. Correct a link in the javadoc of IndexedSortable. (szetszwo) - - HADOOP-4598. '-setrep' command skips under-replicated blocks. (hairong) - - HADOOP-4429. Set defaults for user, group in UnixUserGroupInformation so - login fails more predictably when misconfigured. (Alex Loddengaard via - cdouglas) - - HADOOP-4676. Fix broken URL in blacklisted tasktrackers page. (Amareshwari - Sriramadasu via cdouglas) - - HADOOP-3422 Ganglia counter metrics are all reported with the metric - name "value", so the counter values can not be seen. (Jason Attributor - and Brian Bockelman via stack) - - HADOOP-4704. Fix javadoc typos "the the". (szetszwo) - - HADOOP-4677. Fix semantics of FileSystem::getBlockLocations to return - meaningful values. (Hong Tang via cdouglas) - - HADOOP-4669. Use correct operator when evaluating whether access time is - enabled (Dhruba Borthakur via cdouglas) - - HADOOP-4732. Pass connection and read timeouts in the correct order when - setting up fetch in reduce. (Amareshwari Sriramadasu via cdouglas) - - HADOOP-4558. Fix capacity reclamation in capacity scheduler. - (Amar Kamat via yhemanth) - - HADOOP-4770. Fix rungridmix_2 script to work with RunJar. (cdouglas) - - HADOOP-4738. When using git, the saveVersion script will use only the - commit hash for the version and not the message, which requires escaping. - (cdouglas) - - HADOOP-4576. Show pending job count instead of task count in the UI per - queue in capacity scheduler. (Sreekanth Ramakrishnan via yhemanth) - - HADOOP-4623. Maintain running tasks even if speculative execution is off. - (Amar Kamat via yhemanth) - - HADOOP-4786. Fix broken compilation error in - TestTrackerBlacklistAcrossJobs. (yhemanth) - - HADOOP-4785. Fixes theJobTracker heartbeat to not make two calls to - System.currentTimeMillis(). (Amareshwari Sriramadasu via ddas) - - HADOOP-4792. Add generated Chukwa configuration files to version control - ignore lists. (cdouglas) - - HADOOP-4796. Fix Chukwa test configuration, remove unused components. (Eric - Yang via cdouglas) - - HADOOP-4708. Add binaries missed in the initial checkin for Chukwa. (Eric - Yang via cdouglas) - - HADOOP-4805. Remove black list collector from Chukwa Agent HTTP Sender. - (Eric Yang via cdouglas) - - HADOOP-4837. Move HADOOP_CONF_DIR configuration to chukwa-env.sh (Jerome - Boulon via cdouglas) - - HADOOP-4825. Use ps instead of jps for querying process status in Chukwa. - (Eric Yang via cdouglas) - - HADOOP-4844. Fixed javadoc for - org.apache.hadoop.fs.permission.AccessControlException to document that - it's deprecated in favour of - org.apache.hadoop.security.AccessControlException. (acmurthy) - - HADOOP-4706. Close the underlying output stream in - IFileOutputStream::close. (Jothi Padmanabhan via cdouglas) - - HADOOP-4855. Fixed command-specific help messages for refreshServiceAcl in - DFSAdmin and MRAdmin. (acmurthy) - - HADOOP-4820. Remove unused method FSNamesystem::deleteInSafeMode. (Suresh - Srinivas via cdouglas) - - HADOOP-4698. Lower io.sort.mb to 10 in the tests and raise the junit memory - limit to 512m from 256m. (Nigel Daley via cdouglas) - - HADOOP-4860. Split TestFileTailingAdapters into three separate tests to - avoid contention. (Eric Yang via cdouglas) - - HADOOP-3921. Fixed clover (code coverage) target to work with JDK 6. - (tomwhite via nigel) - - HADOOP-4845. Modify the reduce input byte counter to record only the - compressed size and add a human-readable label. (Yongqiang He via cdouglas) - - HADOOP-4458. Add a test creating symlinks in the working directory. - (Amareshwari Sriramadasu via cdouglas) - - HADOOP-4879. Fix org.apache.hadoop.mapred.Counters to correctly define - Object.equals rather than depend on contentEquals api. (omalley via - acmurthy) - - HADOOP-4791. Fix rpm build process for Chukwa. (Eric Yang via cdouglas) - - HADOOP-4771. Correct initialization of the file count for directories - with quotas. (Ruyue Ma via shv) - - HADOOP-4878. Fix eclipse plugin classpath file to point to ivy's resolved - lib directory and added the same to test-patch.sh. (Giridharan Kesavan via - acmurthy) - - HADOOP-4774. Fix default values of some capacity scheduler configuration - items which would otherwise not work on a fresh checkout. - (Sreekanth Ramakrishnan via yhemanth) - - HADOOP-4876. Fix capacity scheduler reclamation by updating count of - pending tasks correctly. (Sreekanth Ramakrishnan via yhemanth) - - HADOOP-4849. Documentation for Service Level Authorization implemented in - HADOOP-4348. (acmurthy) - - HADOOP-4827. Replace Consolidator with Aggregator macros in Chukwa (Eric - Yang via cdouglas) - - HADOOP-4894. Correctly parse ps output in Chukwa jettyCollector.sh. (Ari - Rabkin via cdouglas) - - HADOOP-4892. Close fds out of Chukwa ExecPlugin. (Ari Rabkin via cdouglas) - - HADOOP-4889. Fix permissions in RPM packaging. (Eric Yang via cdouglas) - - HADOOP-4869. Fixes the TT-JT heartbeat to have an explicit flag for - restart apart from the initialContact flag that there was earlier. - (Amareshwari Sriramadasu via ddas) - - HADOOP-4716. Fixes ReduceTask.java to clear out the mapping between - hosts and MapOutputLocation upon a JT restart (Amar Kamat via ddas) - - HADOOP-4880. Removes an unnecessary testcase from TestJobTrackerRestart. - (Amar Kamat via ddas) - - HADOOP-4924. Fixes a race condition in TaskTracker re-init. (ddas) - - HADOOP-4854. Read reclaim capacity interval from capacity scheduler - configuration. (Sreekanth Ramakrishnan via yhemanth) - - HADOOP-4896. HDFS Fsck does not load HDFS configuration. (Raghu Angadi) - - HADOOP-4956. Creates TaskStatus for failed tasks with an empty Counters - object instead of null. (ddas) - - HADOOP-4979. Fix capacity scheduler to block cluster for failed high - RAM requirements across task types. (Vivek Ratan via yhemanth) - - HADOOP-4949. Fix native compilation. (Chris Douglas via acmurthy) - - HADOOP-4787. Fixes the testcase TestTrackerBlacklistAcrossJobs which was - earlier failing randomly. (Amareshwari Sriramadasu via ddas) - - HADOOP-4914. Add description fields to Chukwa init.d scripts (Eric Yang via - cdouglas) - - HADOOP-4884. Make tool tip date format match standard HICC format. (Eric - Yang via cdouglas) - - HADOOP-4925. Make Chukwa sender properties configurable. (Ari Rabkin via - cdouglas) - - HADOOP-4947. Make Chukwa command parsing more forgiving of whitespace. (Ari - Rabkin via cdouglas) - - HADOOP-5026. Make chukwa/bin scripts executable in repository. (Andy - Konwinski via cdouglas) - - HADOOP-4977. Fix a deadlock between the reclaimCapacity and assignTasks - in capacity scheduler. (Vivek Ratan via yhemanth) - - HADOOP-4988. Fix reclaim capacity to work even when there are queues with - no capacity. (Vivek Ratan via yhemanth) - - HADOOP-5065. Remove generic parameters from argument to - setIn/OutputFormatClass so that it works with SequenceIn/OutputFormat. - (cdouglas via omalley) - - HADOOP-4818. Pass user config to instrumentation API. (Eric Yang via - cdouglas) - - HADOOP-4993. Fix Chukwa agent configuration and startup to make it both - more modular and testable. (Ari Rabkin via cdouglas) - - HADOOP-5048. Fix capacity scheduler to correctly cleanup jobs that are - killed after initialization, but before running. - (Sreekanth Ramakrishnan via yhemanth) - - HADOOP-4671. Mark loop control variables shared between threads as - volatile. (cdouglas) - - HADOOP-5079. HashFunction inadvertently destroys some randomness - (Jonathan Ellis via stack) - - HADOOP-4999. A failure to write to FsEditsLog results in - IndexOutOfBounds exception. (Boris Shkolnik via rangadi) - - HADOOP-5139. Catch IllegalArgumentException during metrics registration - in RPC. (Hairong Kuang via szetszwo) - - HADOOP-5085. Copying a file to local with Crc throws an exception. - (hairong) - - HADOOP-4759. Removes temporary output directory for failed and - killed tasks by launching special CLEANUP tasks for the same. - (Amareshwari Sriramadasu via ddas) - - HADOOP-5211. Fix check for job completion in TestSetupAndCleanupFailure. - (enis) - - HADOOP-5254. The Configuration class should be able to work with XML - parsers that do not support xmlinclude. (Steve Loughran via dhruba) - - HADOOP-4692. Namenode in infinite loop for replicating/deleting corrupt - blocks. (hairong) - - HADOOP-5255. Fix use of Math.abs to avoid overflow. (Jonathan Ellis via - cdouglas) - - HADOOP-5269. Fixes a problem to do with tasktracker holding on to - FAILED_UNCLEAN or KILLED_UNCLEAN tasks forever. (Amareshwari Sriramadasu - via ddas) - - HADOOP-5214. Fixes a ConcurrentModificationException while the Fairshare - Scheduler accesses the tasktrackers stored by the JobTracker. - (Rahul Kumar Singh via yhemanth) - - HADOOP-5233. Addresses the three issues - Race condition in updating - status, NPE in TaskTracker task localization when the conf file is missing - (HADOOP-5234) and NPE in handling KillTaskAction of a cleanup task - (HADOOP-5235). (Amareshwari Sriramadasu via ddas) - - HADOOP-5247. Introduces a broadcast of KillJobAction to all trackers when - a job finishes. This fixes a bunch of problems to do with NPE when a - completed job is not in memory and a tasktracker comes to the jobtracker - with a status report of a task belonging to that job. (Amar Kamat via ddas) - - HADOOP-5282. Fixed job history logs for task attempts that are - failed by the JobTracker, say due to lost task trackers. (Amar - Kamat via yhemanth) - - HADOOP-4963. Fixes a logging to do with getting the location of - map output file. (Amareshwari Sriramadasu via ddas) - - HADOOP-5292. Fix NPE in KFS::getBlockLocations. (Sriram Rao via lohit) - - HADOOP-5241. Fixes a bug in disk-space resource estimation. Makes - the estimation formula linear where blowUp = - Total-Output/Total-Input. (Sharad Agarwal via ddas) - - HADOOP-5142. Fix MapWritable#putAll to store key/value classes. - (Do??acan G??ney via enis) - - HADOOP-4744. Workaround for jetty6 returning -1 when getLocalPort - is invoked on the connector. The workaround patch retries a few - times before failing. (Jothi Padmanabhan via yhemanth) - - HADOOP-5280. Adds a check to prevent a task state transition from - FAILED to any of UNASSIGNED, RUNNING, COMMIT_PENDING or - SUCCEEDED. (ddas) - - HADOOP-5272. Fixes a problem to do with detecting whether an - attempt is the first attempt of a Task. This affects JobTracker - restart. (Amar Kamat via ddas) - - HADOOP-5306. Fixes a problem to do with logging/parsing the http port of a - lost tracker. Affects JobTracker restart. (Amar Kamat via ddas) - - HADOOP-5111. Fix Job::set* methods to work with generics. (cdouglas) - - HADOOP-5274. Fix gridmix2 dependency on wordcount example. (cdouglas) - - HADOOP-5145. Balancer sometimes runs out of memory after running - days or weeks. (hairong) - - HADOOP-5338. Fix jobtracker restart to clear task completion - events cached by tasktrackers forcing them to fetch all events - afresh, thus avoiding missed task completion events on the - tasktrackers. (Amar Kamat via yhemanth) - - HADOOP-4695. Change TestGlobalFilter so that it allows a web page to be - filtered more than once for a single access. (Kan Zhang via szetszwo) - - HADOOP-5298. Change TestServletFilter so that it allows a web page to be - filtered more than once for a single access. (szetszwo) - - HADOOP-5432. Disable ssl during unit tests in hdfsproxy, as it is unused - and causes failures. (cdouglas) - - HADOOP-5416. Correct the shell command "fs -test" forrest doc description. - (Ravi Phulari via szetszwo) - - HADOOP-5327. Fixed job tracker to remove files from system directory on - ACL check failures and also check ACLs on restart. - (Amar Kamat via yhemanth) - - HADOOP-5395. Change the exception message when a job is submitted to an - invalid queue. (Rahul Kumar Singh via yhemanth) - - HADOOP-5276. Fixes a problem to do with updating the start time of - a task when the tracker that ran the task is lost. (Amar Kamat via - ddas) - - HADOOP-5278. Fixes a problem to do with logging the finish time of - a task during recovery (after a JobTracker restart). (Amar Kamat - via ddas) - - HADOOP-5490. Fixes a synchronization problem in the - EagerTaskInitializationListener class. (Jothi Padmanabhan via - ddas) - - HADOOP-5493. The shuffle copier threads return the codecs back to - the pool when the shuffle completes. (Jothi Padmanabhan via ddas) - - HADOOP-5505. Fix JspHelper initialization in the context of - MiniDFSCluster. (Raghu Angadi) - - HADOOP-5414. Fixes IO exception while executing hadoop fs -touchz - fileName by making sure that lease renewal thread exits before dfs - client exits. (hairong) - - HADOOP-5103. FileInputFormat now reuses the clusterMap network - topology object and that brings down the log messages in the - JobClient to do with NetworkTopology.add significantly. (Jothi - Padmanabhan via ddas) - - HADOOP-5483. Fixes a problem in the Directory Cleanup Thread due to which - TestMiniMRWithDFS sometimes used to fail. (ddas) - - HADOOP-5281. Prevent sharing incompatible ZlibCompressor instances between - GzipCodec and DefaultCodec. (cdouglas) - - HADOOP-5463. Balancer throws "Not a host:port pair" unless port is - specified in fs.default.name. (Stuart White via hairong) - - HADOOP-5514. Fix JobTracker metrics and add metrics for wating, failed - tasks. (cdouglas) - - HADOOP-5516. Fix NullPointerException in TaskMemoryManagerThread - that comes when monitored processes disappear when the thread is - running. (Vinod Kumar Vavilapalli via yhemanth) - - HADOOP-5382. Support combiners in the new context object API. (omalley) - - HADOOP-5471. Fixes a problem to do with updating the log.index file in the - case where a cleanup task is run. (Amareshwari Sriramadasu via ddas) - - HADOOP-5534. Fixed a deadlock in Fair scheduler's servlet. - (Rahul Kumar Singh via yhemanth) - - HADOOP-5328. Fixes a problem in the renaming of job history files during - job recovery. Amar Kamat via ddas) - - HADOOP-5417. Don't ignore InterruptedExceptions that happen when calling - into rpc. (omalley) - - HADOOP-5320. Add a close() in TestMapReduceLocal. (Jothi Padmanabhan - via szetszwo) - - HADOOP-5520. Fix a typo in disk quota help message. (Ravi Phulari - via szetszwo) - - HADOOP-5519. Remove claims from mapred-default.xml that prime numbers - of tasks are helpful. (Owen O'Malley via szetszwo) - - HADOOP-5484. TestRecoveryManager fails wtih FileAlreadyExistsException. - (Amar Kamat via hairong) - - HADOOP-5564. Limit the JVM heap size in the java command for initializing - JAVA_PLATFORM. (Suresh Srinivas via szetszwo) - - HADOOP-5565. Add API for failing/finalized jobs to the JT metrics - instrumentation. (Jerome Boulon via cdouglas) - - HADOOP-5390. Remove duplicate jars from tarball, src from binary tarball - added by hdfsproxy. (Zhiyong Zhang via cdouglas) - - HADOOP-5066. Building binary tarball should not build docs/javadocs, copy - src, or run jdiff. (Giridharan Kesavan via cdouglas) - - HADOOP-5459. Fix undetected CRC errors where intermediate output is closed - before it has been completely consumed. (cdouglas) - - HADOOP-5571. Remove widening primitive conversion in TupleWritable mask - manipulation. (Jingkei Ly via cdouglas) - - HADOOP-5588. Remove an unnecessary call to listStatus(..) in - FileSystem.globStatusInternal(..). (Hairong Kuang via szetszwo) - - HADOOP-5473. Solves a race condition in killing a task - the state is KILLED - if there is a user request pending to kill the task and the TT reported - the state as SUCCESS. (Amareshwari Sriramadasu via ddas) - - HADOOP-5576. Fix LocalRunner to work with the new context object API in - mapreduce. (Tom White via omalley) - - HADOOP-4374. Installs a shutdown hook in the Task JVM so that log.index is - updated before the JVM exits. Also makes the update to log.index atomic. - (Ravi Gummadi via ddas) - - HADOOP-5577. Add a verbose flag to mapreduce.Job.waitForCompletion to get - the running job's information printed to the user's stdout as it runs. - (omalley) - - HADOOP-5607. Fix NPE in TestCapacityScheduler. (cdouglas) - - HADOOP-5605. All the replicas incorrectly got marked as corrupt. (hairong) - - HADOOP-5337. JobTracker, upon restart, now waits for the TaskTrackers to - join back before scheduling new tasks. This fixes race conditions associated - with greedy scheduling as was the case earlier. (Amar Kamat via ddas) - - HADOOP-5227. Fix distcp so -update and -delete can be meaningfully - combined. (Tsz Wo (Nicholas), SZE via cdouglas) - - HADOOP-5305. Increase number of files and print debug messages in - TestCopyFiles. (szetszwo) - - HADOOP-5548. Add synchronization for JobTracker methods in RecoveryManager. - (Amareshwari Sriramadasu via sharad) - - HADOOP-3810. NameNode seems unstable on a cluster with little space left. - (hairong) - - HADOOP-5068. Fix NPE in TestCapacityScheduler. (Vinod Kumar Vavilapalli - via szetszwo) - - HADOOP-5585. Clear FileSystem statistics between tasks when jvm-reuse - is enabled. (omalley) - - HADOOP-5394. JobTracker might schedule 2 attempts of the same task - with the same attempt id across restarts. (Amar Kamat via sharad) - - HADOOP-5645. After HADOOP-4920 we need a place to checkin - releasenotes.html. (nigel) - -Release 0.19.2 - Unreleased - - BUG FIXES - - HADOOP-5154. Fixes a deadlock in the fairshare scheduler. - (Matei Zaharia via yhemanth) - - HADOOP-5146. Fixes a race condition that causes LocalDirAllocator to miss - files. (Devaraj Das via yhemanth) - - HADOOP-4638. Fixes job recovery to not crash the job tracker for problems - with a single job file. (Amar Kamat via yhemanth) - - HADOOP-5384. Fix a problem that DataNodeCluster creates blocks with - generationStamp == 1. (szetszwo) - - HADOOP-5376. Fixes the code handling lost tasktrackers to set the task state - to KILLED_UNCLEAN only for relevant type of tasks. - (Amareshwari Sriramadasu via yhemanth) - - HADOOP-5285. Fixes the issues - (1) obtainTaskCleanupTask checks whether job is - inited before trying to lock the JobInProgress (2) Moves the CleanupQueue class - outside the TaskTracker and makes it a generic class that is used by the - JobTracker also for deleting the paths on the job's output fs. (3) Moves the - references to completedJobStore outside the block where the JobTracker is locked. - (ddas) - - HADOOP-5392. Fixes a problem to do with JT crashing during recovery when - the job files are garbled. (Amar Kamat vi ddas) - - HADOOP-5332. Appending to files is not allowed (by default) unless - dfs.support.append is set to true. (dhruba) - - HADOOP-5333. libhdfs supports appending to files. (dhruba) - - HADOOP-3998. Fix dfsclient exception when JVM is shutdown. (dhruba) - - HADOOP-5440. Fixes a problem to do with removing a taskId from the list - of taskIds that the TaskTracker's TaskMemoryManager manages. - (Amareshwari Sriramadasu via ddas) - - HADOOP-5446. Restore TaskTracker metrics. (cdouglas) - - HADOOP-5449. Fixes the history cleaner thread. - (Amareshwari Sriramadasu via ddas) - - HADOOP-5479. NameNode should not send empty block replication request to - DataNode. (hairong) - - HADOOP-5259. Job with output hdfs:/user/<username>/outputpath (no - authority) fails with Wrong FS. (Doug Cutting via hairong) - - HADOOP-5522. Documents the setup/cleanup tasks in the mapred tutorial. - (Amareshwari Sriramadasu via ddas) - - HADOOP-5549. ReplicationMonitor should schedule both replication and - deletion work in one iteration. (hairong) - - HADOOP-5554. DataNodeCluster and CreateEditsLog should create blocks with - the same generation stamp value. (hairong via szetszwo) - - HADOOP-5231. Clones the TaskStatus before passing it to the JobInProgress. - (Amareshwari Sriramadasu via ddas) - - HADOOP-4719. Fix documentation of 'ls' format for FsShell. (Ravi Phulari - via cdouglas) - - HADOOP-5374. Fixes a NPE problem in getTasksToSave method. - (Amareshwari Sriramadasu via ddas) - - HADOOP-4780. Cache the size of directories in DistributedCache, avoiding - long delays in recalculating it. (He Yongqiang via cdouglas) - - HADOOP-5551. Prevent directory destruction on file create. - (Brian Bockelman via shv) - -Release 0.19.1 - 2009-02-23 - - IMPROVEMENTS - - HADOOP-4739. Fix spelling and grammar, improve phrasing of some sections in - mapred tutorial. (Vivek Ratan via cdouglas) - - HADOOP-3894. DFSClient logging improvements. (Steve Loughran via shv) - - HADOOP-5126. Remove empty file BlocksWithLocations.java (shv) - - HADOOP-5127. Remove public methods in FSDirectory. (Jakob Homan via shv) - - BUG FIXES - - HADOOP-4697. Fix getBlockLocations in KosmosFileSystem to handle multiple - blocks correctly. (Sriram Rao via cdouglas) - - HADOOP-4420. Add null checks for job, caused by invalid job IDs. - (Aaron Kimball via tomwhite) - - HADOOP-4632. Fix TestJobHistoryVersion to use test.build.dir instead of the - current workding directory for scratch space. (Amar Kamat via cdouglas) - - HADOOP-4508. Fix FSDataOutputStream.getPos() for append. (dhruba via - szetszwo) - - HADOOP-4727. Fix a group checking bug in fill_stat_structure(...) in - fuse-dfs. (Brian Bockelman via szetszwo) - - HADOOP-4836. Correct typos in mapred related documentation. (Jord? Polo - via szetszwo) - - HADOOP-4821. Usage description in the Quotas guide documentations are - incorrect. (Boris Shkolnik via hairong) - - HADOOP-4847. Moves the loading of OutputCommitter to the Task. - (Amareshwari Sriramadasu via ddas) - - HADOOP-4966. Marks completed setup tasks for removal. - (Amareshwari Sriramadasu via ddas) - - HADOOP-4982. TestFsck should run in Eclipse. (shv) - - HADOOP-5008. TestReplication#testPendingReplicationRetry leaves an opened - fd unclosed. (hairong) - - HADOOP-4906. Fix TaskTracker OOM by keeping a shallow copy of JobConf in - TaskTracker.TaskInProgress. (Sharad Agarwal via acmurthy) - - HADOOP-4918. Fix bzip2 compression to work with Sequence Files. - (Zheng Shao via dhruba). - - HADOOP-4965. TestFileAppend3 should close FileSystem. (shv) - - HADOOP-4967. Fixes a race condition in the JvmManager to do with killing - tasks. (ddas) - - HADOOP-5009. DataNode#shutdown sometimes leaves data block scanner - verification log unclosed. (hairong) - - HADOOP-5086. Use the appropriate FileSystem for trash URIs. (cdouglas) - - HADOOP-4955. Make DBOutputFormat us column names from setOutput(). - (Kevin Peterson via enis) - - HADOOP-4862. Minor : HADOOP-3678 did not remove all the cases of - spurious IOExceptions logged by DataNode. (Raghu Angadi) - - HADOOP-5034. NameNode should send both replication and deletion requests - to DataNode in one reply to a heartbeat. (hairong) - - HADOOP-5156. TestHeartbeatHandling uses MiiDFSCluster.getNamesystem() - which does not exit in branch 0.19 and 0.20. (hairong) - - HADOOP-5161. Accepted sockets do not get placed in - DataXceiverServer#childSockets. (hairong) - - HADOOP-5193. Correct calculation of edits modification time. (shv) - - HADOOP-4494. Allow libhdfs to append to files. - (Pete Wyckoff via dhruba) - - HADOOP-5166. Fix JobTracker restart to work when ACLs are configured - for the JobTracker. (Amar Kamat via yhemanth). - - HADOOP-5067. Fixes TaskInProgress.java to keep track of count of failed and - killed tasks correctly. (Amareshwari Sriramadasu via ddas) - - HADOOP-4760. HDFS streams should not throw exceptions when closed twice. - (enis) - -Release 0.19.0 - 2008-11-18 - - INCOMPATIBLE CHANGES - - HADOOP-3595. Remove deprecated methods for mapred.combine.once - functionality, which was necessary to providing backwards - compatible combiner semantics for 0.18. (cdouglas via omalley) - - HADOOP-3667. Remove the following deprecated methods from JobConf: - addInputPath(Path) - getInputPaths() - getMapOutputCompressionType() - getOutputPath() - getSystemDir() - setInputPath(Path) - setMapOutputCompressionType(CompressionType style) - setOutputPath(Path) - (Amareshwari Sriramadasu via omalley) - - HADOOP-3652. Remove deprecated class OutputFormatBase. - (Amareshwari Sriramadasu via cdouglas) - - HADOOP-2885. Break the hadoop.dfs package into separate packages under - hadoop.hdfs that reflect whether they are client, server, protocol, - etc. DistributedFileSystem and DFSClient have moved and are now - considered package private. (Sanjay Radia via omalley) - - HADOOP-2325. Require Java 6. (cutting) - - HADOOP-372. Add support for multiple input paths with a different - InputFormat and Mapper for each path. (Chris Smith via tomwhite) - - HADOOP-1700. Support appending to file in HDFS. (dhruba) - - HADOOP-3792. Make FsShell -test consistent with unix semantics, returning - zero for true and non-zero for false. (Ben Slusky via cdouglas) - - HADOOP-3664. Remove the deprecated method InputFormat.validateInput, - which is no longer needed. (tomwhite via omalley) - - HADOOP-3549. Give more meaningful errno's in libhdfs. In particular, - EACCES is returned for permission problems. (Ben Slusky via omalley) - - HADOOP-4036. ResourceStatus was added to TaskTrackerStatus by HADOOP-3759, - so increment the InterTrackerProtocol version. (Hemanth Yamijala via - omalley) - - HADOOP-3150. Moves task promotion to tasks. Defines a new interface for - committing output files. Moves job setup to jobclient, and moves jobcleanup - to a separate task. (Amareshwari Sriramadasu via ddas) - - HADOOP-3446. Keep map outputs in memory during the reduce. Remove - fs.inmemory.size.mb and replace with properties defining in memory map - output retention during the shuffle and reduce relative to maximum heap - usage. (cdouglas) - - HADOOP-3245. Adds the feature for supporting JobTracker restart. Running - jobs can be recovered from the history file. The history file format has - been modified to support recovery. The task attempt ID now has the - JobTracker start time to disinguish attempts of the same TIP across - restarts. (Amar Ramesh Kamat via ddas) - - HADOOP-4007. REMOVE DFSFileInfo - FileStatus is sufficient. - (Sanjay Radia via hairong) - - HADOOP-3722. Fixed Hadoop Streaming and Hadoop Pipes to use the Tool - interface and GenericOptionsParser. (Enis Soztutar via acmurthy) - - HADOOP-2816. Cluster summary at name node web reports the space - utilization as: - Configured Capacity: capacity of all the data directories - Reserved space - Present Capacity: Space available for dfs,i.e. remaining+used space - DFS Used%: DFS used space/Present Capacity - (Suresh Srinivas via hairong) - - HADOOP-3938. Disk space quotas for HDFS. This is similar to namespace - quotas in 0.18. (rangadi) - - HADOOP-4293. Make Configuration Writable and remove unreleased - WritableJobConf. Configuration.write is renamed to writeXml. (omalley) - - HADOOP-4281. Change dfsadmin to report available disk space in a format - consistent with the web interface as defined in HADOOP-2816. (Suresh - Srinivas via cdouglas) - - HADOOP-4430. Further change the cluster summary at name node web that was - changed in HADOOP-2816: - Non DFS Used - This indicates the disk space taken by non DFS file from - the Configured capacity - DFS Used % - DFS Used % of Configured Capacity - DFS Remaining % - Remaing % Configured Capacity available for DFS use - DFS command line report reflects the same change. Config parameter - dfs.datanode.du.pct is no longer used and is removed from the - hadoop-default.xml. (Suresh Srinivas via hairong) - - HADOOP-4116. Balancer should provide better resource management. (hairong) - - HADOOP-4599. BlocksMap and BlockInfo made package private. (shv) - - NEW FEATURES - - HADOOP-3341. Allow streaming jobs to specify the field separator for map - and reduce input and output. The new configuration values are: - stream.map.input.field.separator - stream.map.output.field.separator - stream.reduce.input.field.separator - stream.reduce.output.field.separator - All of them default to "\t". (Zheng Shao via omalley) - - HADOOP-3479. Defines the configuration file for the resource manager in - Hadoop. You can configure various parameters related to scheduling, such - as queues and queue properties here. The properties for a queue follow a - naming convention,such as, hadoop.rm.queue.queue-name.property-name. - (Hemanth Yamijala via ddas) - - HADOOP-3149. Adds a way in which map/reducetasks can create multiple - outputs. (Alejandro Abdelnur via ddas) - - HADOOP-3714. Add a new contrib, bash-tab-completion, which enables - bash tab completion for the bin/hadoop script. See the README file - in the contrib directory for the installation. (Chris Smith via enis) - - HADOOP-3730. Adds a new JobConf constructor that disables loading - default configurations. (Alejandro Abdelnur via ddas) - - HADOOP-3772. Add a new Hadoop Instrumentation api for the JobTracker and - the TaskTracker, refactor Hadoop Metrics as an implementation of the api. - (Ari Rabkin via acmurthy) - - HADOOP-2302. Provides a comparator for numerical sorting of key fields. - (ddas) - - HADOOP-153. Provides a way to skip bad records. (Sharad Agarwal via ddas) - - HADOOP-657. Free disk space should be modelled and used by the scheduler - to make scheduling decisions. (Ari Rabkin via omalley) - - HADOOP-3719. Initial checkin of Chukwa, which is a data collection and - analysis framework. (Jerome Boulon, Andy Konwinski, Ari Rabkin, - and Eric Yang) - - HADOOP-3873. Add -filelimit and -sizelimit options to distcp to cap the - number of files/bytes copied in a particular run to support incremental - updates and mirroring. (TszWo (Nicholas), SZE via cdouglas) - - HADOOP-3585. FailMon package for hardware failure monitoring and - analysis of anomalies. (Ioannis Koltsidas via dhruba) - - HADOOP-1480. Add counters to the C++ Pipes API. (acmurthy via omalley) - - HADOOP-3854. Add support for pluggable servlet filters in the HttpServers. - (Tsz Wo (Nicholas) Sze via omalley) - - HADOOP-3759. Provides ability to run memory intensive jobs without - affecting other running tasks on the nodes. (Hemanth Yamijala via ddas) - - HADOOP-3746. Add a fair share scheduler. (Matei Zaharia via omalley) - - HADOOP-3754. Add a thrift interface to access HDFS. (dhruba via omalley) - - HADOOP-3828. Provides a way to write skipped records to DFS. - (Sharad Agarwal via ddas) - - HADOOP-3948. Separate name-node edits and fsimage directories. - (Lohit Vijayarenu via shv) - - HADOOP-3939. Add an option to DistCp to delete files at the destination - not present at the source. (Tsz Wo (Nicholas) Sze via cdouglas) - - HADOOP-3601. Add a new contrib module for Hive, which is a sql-like - query processing tool that uses map/reduce. (Ashish Thusoo via omalley) - - HADOOP-3866. Added sort and multi-job updates in the JobTracker web ui. - (Craig Weisenfluh via omalley) - - HADOOP-3698. Add access control to control who is allowed to submit or - modify jobs in the JobTracker. (Hemanth Yamijala via omalley) - - HADOOP-1869. Support access times for HDFS files. (dhruba) - - HADOOP-3941. Extend FileSystem API to return file-checksums. - (szetszwo) - - HADOOP-3581. Prevents memory intensive user tasks from taking down - nodes. (Vinod K V via ddas) - - HADOOP-3970. Provides a way to recover counters written to JobHistory. - (Amar Kamat via ddas) - - HADOOP-3702. Adds ChainMapper and ChainReducer classes allow composing - chains of Maps and Reduces in a single Map/Reduce job, something like - MAP+ / REDUCE MAP*. (Alejandro Abdelnur via ddas) - - HADOOP-3445. Add capacity scheduler that provides guaranteed capacities to - queues as a percentage of the cluster. (Vivek Ratan via omalley) - - HADOOP-3992. Add a synthetic load generation facility to the test - directory. (hairong via szetszwo) - - HADOOP-3981. Implement a distributed file checksum algorithm in HDFS - and change DistCp to use file checksum for comparing src and dst files - (szetszwo) - - HADOOP-3829. Narrown down skipped records based on user acceptable value. - (Sharad Agarwal via ddas) - - HADOOP-3930. Add common interfaces for the pluggable schedulers and the - cli & gui clients. (Sreekanth Ramakrishnan via omalley) - - HADOOP-4176. Implement getFileChecksum(Path) in HftpFileSystem. (szetszwo) - - HADOOP-249. Reuse JVMs across Map-Reduce Tasks. - Configuration changes to hadoop-default.xml: - add mapred.job.reuse.jvm.num.tasks - (Devaraj Das via acmurthy) - - HADOOP-4070. Provide a mechanism in Hive for registering UDFs from the - query language. (tomwhite) - - HADOOP-2536. Implement a JDBC based database input and output formats to - allow Map-Reduce applications to work with databases. (Fredrik Hedberg and - Enis Soztutar via acmurthy) - - HADOOP-3019. A new library to support total order partitions. - (cdouglas via omalley) - - HADOOP-3924. Added a 'KILLED' job status. (Subramaniam Krishnan via - acmurthy) - - IMPROVEMENTS - - HADOOP-4205. hive: metastore and ql to use the refactored SerDe library. - (zshao) - - HADOOP-4106. libhdfs: add time, permission and user attribute support - (part 2). (Pete Wyckoff through zshao) - - HADOOP-4104. libhdfs: add time, permission and user attribute support. - (Pete Wyckoff through zshao) - - HADOOP-3908. libhdfs: better error message if llibhdfs.so doesn't exist. - (Pete Wyckoff through zshao) - - HADOOP-3732. Delay intialization of datanode block verification till - the verification thread is started. (rangadi) - - HADOOP-1627. Various small improvements to 'dfsadmin -report' output. - (rangadi) - - HADOOP-3577. Tools to inject blocks into name node and simulated - data nodes for testing. (Sanjay Radia via hairong) - - HADOOP-2664. Add a lzop compatible codec, so that files compressed by lzop - may be processed by map/reduce. (cdouglas via omalley) - - HADOOP-3655. Add additional ant properties to control junit. (Steve - Loughran via omalley) - - HADOOP-3543. Update the copyright year to 2008. (cdouglas via omalley) - - HADOOP-3587. Add a unit test for the contrib/data_join framework. - (cdouglas) - - HADOOP-3402. Add terasort example program (omalley) - - HADOOP-3660. Add replication factor for injecting blocks in simulated - datanodes. (Sanjay Radia via cdouglas) - - HADOOP-3684. Add a cloning function to the contrib/data_join framework - permitting users to define a more efficient method for cloning values from - the reduce than serialization/deserialization. (Runping Qi via cdouglas) - - HADOOP-3478. Improves the handling of map output fetching. Now the - randomization is by the hosts (and not the map outputs themselves). - (Jothi Padmanabhan via ddas) - - HADOOP-3617. Removed redundant checks of accounting space in MapTask and - makes the spill thread persistent so as to avoid creating a new one for - each spill. (Chris Douglas via acmurthy) - - HADOOP-3412. Factor the scheduler out of the JobTracker and make - it pluggable. (Tom White and Brice Arnould via omalley) - - HADOOP-3756. Minor. Remove unused dfs.client.buffer.dir from - hadoop-default.xml. (rangadi) - - HADOOP-3747. Adds counter suport for MultipleOutputs. - (Alejandro Abdelnur via ddas) - - HADOOP-3169. LeaseChecker daemon should not be started in DFSClient - constructor. (TszWo (Nicholas), SZE via hairong) - - HADOOP-3824. Move base functionality of StatusHttpServer to a core - package. (TszWo (Nicholas), SZE via cdouglas) - - HADOOP-3646. Add a bzip2 compatible codec, so bzip compressed data - may be processed by map/reduce. (Abdul Qadeer via cdouglas) - - HADOOP-3861. MapFile.Reader and Writer should implement Closeable. - (tomwhite via omalley) - - HADOOP-3791. Introduce generics into ReflectionUtils. (Chris Smith via - cdouglas) - - HADOOP-3694. Improve unit test performance by changing - MiniDFSCluster to listen only on 127.0.0.1. (cutting) - - HADOOP-3620. Namenode should synchronously resolve a datanode's network - location when the datanode registers. (hairong) - - HADOOP-3860. NNThroughputBenchmark is extended with rename and delete - benchmarks. (shv) - - HADOOP-3892. Include unix group name in JobConf. (Matei Zaharia via johan) - - HADOOP-3875. Change the time period between heartbeats to be relative to - the end of the heartbeat rpc, rather than the start. This causes better - behavior if the JobTracker is overloaded. (acmurthy via omalley) - - HADOOP-3853. Move multiple input format (HADOOP-372) extension to - library package. (tomwhite via johan) - - HADOOP-9. Use roulette scheduling for temporary space when the size - is not known. (Ari Rabkin via omalley) - - HADOOP-3202. Use recursive delete rather than FileUtil.fullyDelete. - (Amareshwari Sriramadasu via omalley) - - HADOOP-3368. Remove common-logging.properties from conf. (Steve Loughran - via omalley) - - HADOOP-3851. Fix spelling mistake in FSNamesystemMetrics. (Steve Loughran - via omalley) - - HADOOP-3780. Remove asynchronous resolution of network topology in the - JobTracker (Amar Kamat via omalley) - - HADOOP-3852. Add ShellCommandExecutor.toString method to make nicer - error messages. (Steve Loughran via omalley) - - HADOOP-3844. Include message of local exception in RPC client failures. - (Steve Loughran via omalley) - - HADOOP-3935. Split out inner classes from DataNode.java. (johan) - - HADOOP-3905. Create generic interfaces for edit log streams. (shv) - - HADOOP-3062. Add metrics to DataNode and TaskTracker to record network - traffic for HDFS reads/writes and MR shuffling. (cdouglas) - - HADOOP-3742. Remove HDFS from public java doc and add javadoc-dev for - generative javadoc for developers. (Sanjay Radia via omalley) - - HADOOP-3944. Improve documentation for public TupleWritable class in - join package. (Chris Douglas via enis) - - HADOOP-2330. Preallocate HDFS transaction log to improve performance. - (dhruba and hairong) - - HADOOP-3965. Convert DataBlockScanner into a package private class. (shv) - - HADOOP-3488. Prevent hadoop-daemon from rsync'ing log files (Stefan - Groshupf and Craig Macdonald via omalley) - - HADOOP-3342. Change the kill task actions to require http post instead of - get to prevent accidental crawls from triggering it. (enis via omalley) - - HADOOP-3937. Limit the job name in the job history filename to 50 - characters. (Matei Zaharia via omalley) - - HADOOP-3943. Remove unnecessary synchronization in - NetworkTopology.pseudoSortByDistance. (hairong via omalley) - - HADOOP-3498. File globbing alternation should be able to span path - components. (tomwhite) - - HADOOP-3361. Implement renames for NativeS3FileSystem. - (Albert Chern via tomwhite) - - HADOOP-3605. Make EC2 scripts show an error message if AWS_ACCOUNT_ID is - unset. (Al Hoang via tomwhite) - - HADOOP-4147. Remove unused class JobWithTaskContext from class - JobInProgress. (Amareshwari Sriramadasu via johan) - - HADOOP-4151. Add a byte-comparable interface that both Text and - BytesWritable implement. (cdouglas via omalley) - - HADOOP-4174. Move fs image/edit log methods from ClientProtocol to - NamenodeProtocol. (shv via szetszwo) - - HADOOP-4181. Include a .gitignore and saveVersion.sh change to support - developing under git. (omalley) - - HADOOP-4186. Factor LineReader out of LineRecordReader. (tomwhite via - omalley) - - HADOOP-4184. Break the module dependencies between core, hdfs, and - mapred. (tomwhite via omalley) - - HADOOP-4075. test-patch.sh now spits out ant commands that it runs. - (Ramya R via nigel) - - HADOOP-4117. Improve configurability of Hadoop EC2 instances. - (tomwhite) - - HADOOP-2411. Add support for larger CPU EC2 instance types. - (Chris K Wensel via tomwhite) - - HADOOP-4083. Changed the configuration attribute queue.name to - mapred.job.queue.name. (Hemanth Yamijala via acmurthy) - - HADOOP-4194. Added the JobConf and JobID to job-related methods in - JobTrackerInstrumentation for better metrics. (Mac Yang via acmurthy) - - HADOOP-3975. Change test-patch script to report working the dir - modifications preventing the suite from being run. (Ramya R via cdouglas) - - HADOOP-4124. Added a command-line switch to allow users to set job - priorities, also allow it to be manipulated via the web-ui. (Hemanth - Yamijala via acmurthy) - - HADOOP-2165. Augmented JobHistory to include the URIs to the tasks' - userlogs. (Vinod Kumar Vavilapalli via acmurthy) - - HADOOP-4062. Remove the synchronization on the output stream when a - connection is closed and also remove an undesirable exception when - a client is stoped while there is no pending RPC request. (hairong) - - HADOOP-4227. Remove the deprecated class org.apache.hadoop.fs.ShellCommand. - (szetszwo) - - HADOOP-4006. Clean up FSConstants and move some of the constants to - better places. (Sanjay Radia via rangadi) - - HADOOP-4279. Trace the seeds of random sequences in append unit tests to - make itermitant failures reproducible. (szetszwo via cdouglas) - - HADOOP-4209. Remove the change to the format of task attempt id by - incrementing the task attempt numbers by 1000 when the job restarts. - (Amar Kamat via omalley) - - HADOOP-4301. Adds forrest doc for the skip bad records feature. - (Sharad Agarwal via ddas) - - HADOOP-4354. Separate TestDatanodeDeath.testDatanodeDeath() into 4 tests. - (szetszwo) - - HADOOP-3790. Add more unit tests for testing HDFS file append. (szetszwo) - - HADOOP-4321. Include documentation for the capacity scheduler. (Hemanth - Yamijala via omalley) - - HADOOP-4424. Change menu layout for Hadoop documentation (Boris Shkolnik - via cdouglas). - - HADOOP-4438. Update forrest documentation to include missing FsShell - commands. (Suresh Srinivas via cdouglas) - - HADOOP-4105. Add forrest documentation for libhdfs. - (Pete Wyckoff via cutting) - - HADOOP-4510. Make getTaskOutputPath public. (Chris Wensel via omalley) - - OPTIMIZATIONS - - HADOOP-3556. Removed lock contention in MD5Hash by changing the - singleton MessageDigester by an instance per Thread using - ThreadLocal. (Iv?n de Prado via omalley) - - HADOOP-3328. When client is writing data to DFS, only the last - datanode in the pipeline needs to verify the checksum. Saves around - 30% CPU on intermediate datanodes. (rangadi) - - HADOOP-3863. Use a thread-local string encoder rather than a static one - that is protected by a lock. (acmurthy via omalley) - - HADOOP-3864. Prevent the JobTracker from locking up when a job is being - initialized. (acmurthy via omalley) - - HADOOP-3816. Faster directory listing in KFS. (Sriram Rao via omalley) - - HADOOP-2130. Pipes submit job should have both blocking and non-blocking - versions. (acmurthy via omalley) - - HADOOP-3769. Make the SampleMapper and SampleReducer from - GenericMRLoadGenerator public, so they can be used in other contexts. - (Lingyun Yang via omalley) - - HADOOP-3514. Inline the CRCs in intermediate files as opposed to reading - it from a different .crc file. (Jothi Padmanabhan via ddas) - - HADOOP-3638. Caches the iFile index files in memory to reduce seeks - (Jothi Padmanabhan via ddas) - - HADOOP-4225. FSEditLog.logOpenFile() should persist accessTime - rather than modificationTime. (shv) - - HADOOP-4380. Made several new classes (Child, JVMId, - JobTrackerInstrumentation, QueueManager, ResourceEstimator, - TaskTrackerInstrumentation, and TaskTrackerMetricsInst) in - org.apache.hadoop.mapred package private instead of public. (omalley) - - BUG FIXES - - HADOOP-3563. Refactor the distributed upgrade code so that it is - easier to identify datanode and namenode related code. (dhruba) - - HADOOP-3640. Fix the read method in the NativeS3InputStream. (tomwhite via - omalley) - - HADOOP-3711. Fixes the Streaming input parsing to properly find the - separator. (Amareshwari Sriramadasu via ddas) - - HADOOP-3725. Prevent TestMiniMRMapDebugScript from swallowing exceptions. - (Steve Loughran via cdouglas) - - HADOOP-3726. Throw exceptions from TestCLI setup and teardown instead of - swallowing them. (Steve Loughran via cdouglas) - - HADOOP-3721. Refactor CompositeRecordReader and related mapred.join classes - to make them clearer. (cdouglas) - - HADOOP-3720. Re-read the config file when dfsadmin -refreshNodes is invoked - so dfs.hosts and dfs.hosts.exclude are observed. (lohit vijayarenu via - cdouglas) - - HADOOP-3485. Allow writing to files over fuse. - (Pete Wyckoff via dhruba) - - HADOOP-3723. The flags to the libhdfs.create call can be treated as - a bitmask. (Pete Wyckoff via dhruba) - - HADOOP-3643. Filter out completed tasks when asking for running tasks in - the JobTracker web/ui. (Amar Kamat via omalley) - - HADOOP-3777. Ensure that Lzo compressors/decompressors correctly handle the - case where native libraries aren't available. (Chris Douglas via acmurthy) - - HADOOP-3728. Fix SleepJob so that it doesn't depend on temporary files, - this ensures we can now run more than one instance of SleepJob - simultaneously. (Chris Douglas via acmurthy) - - HADOOP-3795. Fix saving image files on Namenode with different checkpoint - stamps. (Lohit Vijayarenu via mahadev) - - HADOOP-3624. Improving createeditslog to create tree directory structure. - (Lohit Vijayarenu via mahadev) - - HADOOP-3778. DFSInputStream.seek() did not retry in case of some errors. - (LN via rangadi) - - HADOOP-3661. The handling of moving files deleted through fuse-dfs to - Trash made similar to the behaviour from dfs shell. - (Pete Wyckoff via dhruba) - - HADOOP-3819. Unset LANG and LC_CTYPE in saveVersion.sh to make it - compatible with non-English locales. (Rong-En Fan via cdouglas) - - HADOOP-3848. Cache calls to getSystemDir in the TaskTracker instead of - calling it for each task start. (acmurthy via omalley) - - HADOOP-3131. Fix reduce progress reporting for compressed intermediate - data. (Matei Zaharia via acmurthy) - - HADOOP-3796. fuse-dfs configuration is implemented as file system - mount options. (Pete Wyckoff via dhruba) - - HADOOP-3836. Fix TestMultipleOutputs to correctly clean up. (Alejandro - Abdelnur via acmurthy) - - HADOOP-3805. Improve fuse-dfs write performance. - (Pete Wyckoff via zshao) - - HADOOP-3846. Fix unit test CreateEditsLog to generate paths correctly. - (Lohit Vjayarenu via cdouglas) - - HADOOP-3904. Fix unit tests using the old dfs package name. - (TszWo (Nicholas), SZE via johan) - - HADOOP-3319. Fix some HOD error messages to go stderr instead of - stdout. (Vinod Kumar Vavilapalli via omalley) - - HADOOP-3907. Move INodeDirectoryWithQuota to its own .java file. - (Tsz Wo (Nicholas), SZE via hairong) - - HADOOP-3919. Fix attribute name in hadoop-default for - mapred.jobtracker.instrumentation. (Ari Rabkin via omalley) - - HADOOP-3903. Change the package name for the servlets to be hdfs instead of - dfs. (Tsz Wo (Nicholas) Sze via omalley) - - HADOOP-3773. Change Pipes to set the default map output key and value - types correctly. (Koji Noguchi via omalley) - - HADOOP-3952. Fix compilation error in TestDataJoin referencing dfs package. - (omalley) - - HADOOP-3951. Fix package name for FSNamesystem logs and modify other - hard-coded Logs to use the class name. (cdouglas) - - HADOOP-3889. Improve error reporting from HftpFileSystem, handling in - DistCp. (Tsz Wo (Nicholas), SZE via cdouglas) - - HADOOP-3946. Fix TestMapRed after hadoop-3664. (tomwhite via omalley) - - HADOOP-3949. Remove duplicate jars from Chukwa. (Jerome Boulon via omalley) - - HADOOP-3933. DataNode sometimes sends up to io.byte.per.checksum bytes - more than required to client. (Ning Li via rangadi) - - HADOOP-3962. Shell command "fs -count" should support paths with different - file systems. (Tsz Wo (Nicholas), SZE via mahadev) - - HADOOP-3957. Fix javac warnings in DistCp and TestCopyFiles. (Tsz Wo - (Nicholas), SZE via cdouglas) - - HADOOP-3958. Fix TestMapRed to check the success of test-job. (omalley via - acmurthy) - - HADOOP-3985. Fix TestHDFSServerPorts to use random ports. (Hairong Kuang - via omalley) - - HADOOP-3964. Fix javadoc warnings introduced by FailMon. (dhruba) - - HADOOP-3785. Fix FileSystem cache to be case-insensitive for scheme and - authority. (Bill de hOra via cdouglas) - - HADOOP-3506. Fix a rare NPE caused by error handling in S3. (Tom White via - cdouglas) - - HADOOP-3705. Fix mapred.join parser to accept InputFormats named with - underscore and static, inner classes. (cdouglas) - - HADOOP-4023. Fix javadoc warnings introduced when the HDFS javadoc was - made private. (omalley) - - HADOOP-4030. Remove lzop from the default list of codecs. (Arun Murthy via - cdouglas) - - HADOOP-3961. Fix task disk space requirement estimates for virtual - input jobs. Delays limiting task placement until after 10% of the maps - have finished. (Ari Rabkin via omalley) - - HADOOP-2168. Fix problem with C++ record reader's progress not being - reported to framework. (acmurthy via omalley) - - HADOOP-3966. Copy findbugs generated output files to PATCH_DIR while - running test-patch. (Ramya R via lohit) - - HADOOP-4037. Fix the eclipse plugin for versions of kfs and log4j. (nigel - via omalley) - - HADOOP-3950. Cause the Mini MR cluster to wait for task trackers to - register before continuing. (enis via omalley) - - HADOOP-3910. Remove unused ClusterTestDFSNamespaceLogging and - ClusterTestDFS. (Tsz Wo (Nicholas), SZE via cdouglas) - - HADOOP-3954. Disable record skipping by default. (Sharad Agarwal via - cdouglas) - - HADOOP-4050. Fix TestFairScheduler to use absolute paths for the work - directory. (Matei Zaharia via omalley) - - HADOOP-4069. Keep temporary test files from TestKosmosFileSystem under - test.build.data instead of /tmp. (lohit via omalley) - - HADOOP-4078. Create test files for TestKosmosFileSystem in separate - directory under test.build.data. (lohit) - - HADOOP-3968. Fix getFileBlockLocations calls to use FileStatus instead - of Path reflecting the new API. (Pete Wyckoff via lohit) - - HADOOP-3963. libhdfs does not exit on its own, instead it returns error - to the caller and behaves as a true library. (Pete Wyckoff via dhruba) - - HADOOP-4100. Removes the cleanupTask scheduling from the Scheduler - implementations and moves it to the JobTracker. - (Amareshwari Sriramadasu via ddas) - - HADOOP-4097. Make hive work well with speculative execution turned on. - (Joydeep Sen Sarma via dhruba) - - HADOOP-4113. Changes to libhdfs to not exit on its own, rather return - an error code to the caller. (Pete Wyckoff via dhruba) - - HADOOP-4054. Remove duplicate lease removal during edit log loading. - (hairong) - - HADOOP-4071. FSNameSystem.isReplicationInProgress should add an - underReplicated block to the neededReplication queue using method - "add" not "update". (hairong) - - HADOOP-4154. Fix type warnings in WritableUtils. (szetszwo via omalley) - - HADOOP-4133. Log files generated by Hive should reside in the - build directory. (Prasad Chakka via dhruba) - - HADOOP-4094. Hive now has hive-default.xml and hive-site.xml similar - to core hadoop. (Prasad Chakka via dhruba) - - HADOOP-4112. Handles cleanupTask in JobHistory - (Amareshwari Sriramadasu via ddas) - - HADOOP-3831. Very slow reading clients sometimes failed while reading. - (rangadi) - - HADOOP-4155. Use JobTracker's start time while initializing JobHistory's - JobTracker Unique String. (lohit) - - HADOOP-4099. Fix null pointer when using HFTP from an 0.18 server. - (dhruba via omalley) - - HADOOP-3570. Includes user specified libjar files in the client side - classpath path. (Sharad Agarwal via ddas) - - HADOOP-4129. Changed memory limits of TaskTracker and Tasks to be in - KiloBytes rather than bytes. (Vinod Kumar Vavilapalli via acmurthy) - - HADOOP-4139. Optimize Hive multi group-by. - (Namin Jain via dhruba) - - HADOOP-3911. Add a check to fsck options to make sure -files is not - the first option to resolve conflicts with GenericOptionsParser - (lohit) - - HADOOP-3623. Refactor LeaseManager. (szetszwo) - - HADOOP-4125. Handles Reduce cleanup tip on the web ui. - (Amareshwari Sriramadasu via ddas) - - HADOOP-4087. Hive Metastore API for php and python clients. - (Prasad Chakka via dhruba) - - HADOOP-4197. Update DATA_TRANSFER_VERSION for HADOOP-3981. (szetszwo) - - HADOOP-4138. Refactor the Hive SerDe library to better structure - the interfaces to the serializer and de-serializer. - (Zheng Shao via dhruba) - - HADOOP-4195. Close compressor before returning to codec pool. - (acmurthy via omalley) - - HADOOP-2403. Escapes some special characters before logging to - history files. (Amareshwari Sriramadasu via ddas) - - HADOOP-4200. Fix a bug in the test-patch.sh script. - (Ramya R via nigel) - - HADOOP-4084. Add explain plan capabilities to Hive Query Language. - (Ashish Thusoo via dhruba) - - HADOOP-4121. Preserve cause for exception if the initialization of - HistoryViewer for JobHistory fails. (Amareshwari Sri Ramadasu via - acmurthy) - - HADOOP-4213. Fixes NPE in TestLimitTasksPerJobTaskScheduler. - (Sreekanth Ramakrishnan via ddas) - - HADOOP-4077. Setting access and modification time for a file - requires write permissions on the file. (dhruba) - - HADOOP-3592. Fix a couple of possible file leaks in FileUtil - (Bill de hOra via rangadi) - - HADOOP-4120. Hive interactive shell records the time taken by a - query. (Raghotham Murthy via dhruba) - - HADOOP-4090. The hive scripts pick up hadoop from HADOOP_HOME - and then the path. (Raghotham Murthy via dhruba) - - HADOOP-4242. Remove extra ";" in FSDirectory that blocks compilation - in some IDE's. (szetszwo via omalley) - - HADOOP-4249. Fix eclipse path to include the hsqldb.jar. (szetszwo via - omalley) - - HADOOP-4247. Move InputSampler into org.apache.hadoop.mapred.lib, so that - examples.jar doesn't depend on tools.jar. (omalley) - - HADOOP-4269. Fix the deprecation of LineReader by extending the new class - into the old name and deprecating it. Also update the tests to test the - new class. (cdouglas via omalley) - - HADOOP-4280. Fix conversions between seconds in C and milliseconds in - Java for access times for files. (Pete Wyckoff via rangadi) - - HADOOP-4254. -setSpaceQuota command does not convert "TB" extenstion to - terabytes properly. Implementation now uses StringUtils for parsing this. - (Raghu Angadi) - - HADOOP-4259. Findbugs should run over tools.jar also. (cdouglas via - omalley) - - HADOOP-4275. Move public method isJobValidName from JobID to a private - method in JobTracker. (omalley) - - HADOOP-4173. fix failures in TestProcfsBasedProcessTree and - TestTaskTrackerMemoryManager tests. ProcfsBasedProcessTree and - memory management in TaskTracker are disabled on Windows. - (Vinod K V via rangadi) - - HADOOP-4189. Fixes the history blocksize & intertracker protocol version - issues introduced as part of HADOOP-3245. (Amar Kamat via ddas) - - HADOOP-4190. Fixes the backward compatibility issue with Job History. - introduced by HADOOP-3245 and HADOOP-2403. (Amar Kamat via ddas) - - HADOOP-4237. Fixes the TestStreamingBadRecords.testNarrowDown testcase. - (Sharad Agarwal via ddas) - - HADOOP-4274. Capacity scheduler accidently modifies the underlying - data structures when browing the job lists. (Hemanth Yamijala via omalley) - - HADOOP-4309. Fix eclipse-plugin compilation. (cdouglas) - - HADOOP-4232. Fix race condition in JVM reuse when multiple slots become - free. (ddas via acmurthy) - - HADOOP-4302. Fix a race condition in TestReduceFetch that can yield false - negatvies. (cdouglas) - - HADOOP-3942. Update distcp documentation to include features introduced in - HADOOP-3873, HADOOP-3939. (Tsz Wo (Nicholas), SZE via cdouglas) - - HADOOP-4319. fuse-dfs dfs_read function returns as many bytes as it is - told to read unlesss end-of-file is reached. (Pete Wyckoff via dhruba) - - HADOOP-4246. Ensure we have the correct lower bound on the number of - retries for fetching map-outputs; also fixed the case where the reducer - automatically kills on too many unique map-outputs could not be fetched - for small jobs. (Amareshwari Sri Ramadasu via acmurthy) - - HADOOP-4163. Report FSErrors from map output fetch threads instead of - merely logging them. (Sharad Agarwal via cdouglas) - - HADOOP-4261. Adds a setup task for jobs. This is required so that we - don't setup jobs that haven't been inited yet (since init could lead - to job failure). Only after the init has successfully happened do we - launch the setupJob task. (Amareshwari Sriramadasu via ddas) - - HADOOP-4256. Removes Completed and Failed Job tables from - jobqueue_details.jsp. (Sreekanth Ramakrishnan via ddas) - - HADOOP-4267. Occasional exceptions during shutting down HSQLDB is logged - but not rethrown. (enis) - - HADOOP-4018. The number of tasks for a single job cannot exceed a - pre-configured maximum value. (dhruba) - - HADOOP-4288. Fixes a NPE problem in CapacityScheduler. - (Amar Kamat via ddas) - - HADOOP-4014. Create hard links with 'fsutil hardlink' on Windows. (shv) - - HADOOP-4393. Merged org.apache.hadoop.fs.permission.AccessControlException - and org.apache.hadoop.security.AccessControlIOException into a single - class hadoop.security.AccessControlException. (omalley via acmurthy) - - HADOOP-4287. Fixes an issue to do with maintaining counts of running/pending - maps/reduces. (Sreekanth Ramakrishnan via ddas) - - HADOOP-4361. Makes sure that jobs killed from command line are killed - fast (i.e., there is a slot to run the cleanup task soon). - (Amareshwari Sriramadasu via ddas) - - HADOOP-4400. Add "hdfs://" to fs.default.name on quickstart.html. - (Jeff Hammerbacher via omalley) - - HADOOP-4378. Fix TestJobQueueInformation to use SleepJob rather than - WordCount via TestMiniMRWithDFS. (Sreekanth Ramakrishnan via acmurthy) - - HADOOP-4376. Fix formatting in hadoop-default.xml for - hadoop.http.filter.initializers. (Enis Soztutar via acmurthy) - - HADOOP-4410. Adds an extra arg to the API FileUtil.makeShellPath to - determine whether to canonicalize file paths or not. - (Amareshwari Sriramadasu via ddas) - - HADOOP-4236. Ensure un-initialized jobs are killed correctly on - user-demand. (Sharad Agarwal via acmurthy) - - HADOOP-4373. Fix calculation of Guaranteed Capacity for the - capacity-scheduler. (Hemanth Yamijala via acmurthy) - - HADOOP-4053. Schedulers must be notified when jobs complete. (Amar Kamat via omalley) - - HADOOP-4335. Fix FsShell -ls for filesystems without owners/groups. (David - Phillips via cdouglas) - - HADOOP-4426. TestCapacityScheduler broke due to the two commits HADOOP-4053 - and HADOOP-4373. This patch fixes that. (Hemanth Yamijala via ddas) - - HADOOP-4418. Updates documentation in forrest for Mapred, streaming and pipes. - (Amareshwari Sriramadasu via ddas) - - HADOOP-3155. Ensure that there is only one thread fetching - TaskCompletionEvents on TaskTracker re-init. (Dhruba Borthakur via - acmurthy) - - HADOOP-4425. Fix EditLogInputStream to overload the bulk read method. - (cdouglas) - - HADOOP-4427. Adds the new queue/job commands to the manual. - (Sreekanth Ramakrishnan via ddas) - - HADOOP-4278. Increase debug logging for unit test TestDatanodeDeath. - Fix the case when primary is dead. (dhruba via szetszwo) - - HADOOP-4423. Keep block length when the block recovery is triggered by - append. (szetszwo) - - HADOOP-4449. Fix dfsadmin usage. (Raghu Angadi via cdouglas) - - HADOOP-4455. Added TestSerDe so that unit tests can run successfully. - (Ashish Thusoo via dhruba) - - HADOOP-4457. Fixes an input split logging problem introduced by - HADOOP-3245. (Amareshwari Sriramadasu via ddas) - - HADOOP-4464. Separate out TestFileCreationClient from TestFileCreation. - (Tsz Wo (Nicholas), SZE via cdouglas) - - HADOOP-4404. saveFSImage() removes files from a storage directory that do - not correspond to its type. (shv) - - HADOOP-4149. Fix handling of updates to the job priority, by changing the - list of jobs to be keyed by the priority, submit time, and job tracker id. - (Amar Kamat via omalley) - - HADOOP-4296. Fix job client failures by not retiring a job as soon as it - is finished. (dhruba) - - HADOOP-4439. Remove configuration variables that aren't usable yet, in - particular mapred.tasktracker.tasks.maxmemory and mapred.task.max.memory. - (Hemanth Yamijala via omalley) - - HADOOP-4230. Fix for serde2 interface, limit operator, select * operator, - UDF trim functions and sampling. (Ashish Thusoo via dhruba) - - HADOOP-4358. No need to truncate access time in INode. Also fixes NPE - in CreateEditsLog. (Raghu Angadi) - - HADOOP-4387. TestHDFSFileSystemContract fails on windows nightly builds. - (Raghu Angadi) - - HADOOP-4466. Ensure that SequenceFileOutputFormat isn't tied to Writables - and can be used with other Serialization frameworks. (Chris Wensel via - acmurthy) - - HADOOP-4525. Fix ipc.server.ipcnodelay originally missed in in HADOOP-2232. - (cdouglas via Clint Morgan) - - HADOOP-4498. Ensure that JobHistory correctly escapes the job name so that - regex patterns work. (Chris Wensel via acmurthy) - - HADOOP-4446. Modify guaranteed capacity labels in capacity scheduler's UI - to reflect the information being displayed. (Sreekanth Ramakrishnan via - yhemanth) - - HADOOP-4282. Some user facing URLs are not filtered by user filters. - (szetszwo) - - HADOOP-4595. Fixes two race conditions - one to do with updating free slot count, - and another to do with starting the MapEventsFetcher thread. (ddas) - - HADOOP-4552. Fix a deadlock in RPC server. (Raghu Angadi) - - HADOOP-4471. Sort running jobs by priority in the capacity scheduler. - (Amar Kamat via yhemanth) - - HADOOP-4500. Fix MultiFileSplit to get the FileSystem from the relevant - path rather than the JobClient. (Joydeep Sen Sarma via cdouglas) - -Release 0.18.4 - Unreleased - - BUG FIXES - - HADOOP-5114. Remove timeout for accept() in DataNode. This makes accept() - fail in JDK on Windows and causes many tests to fail. (Raghu Angadi) - - HADOOP-5192. Block receiver should not remove a block that's created or - being written by other threads. (hairong) - - HADOOP-5134. FSNamesystem#commitBlockSynchronization adds under-construction - block locations to blocksMap. (Dhruba Borthakur via hairong) - - HADOOP-5412. Simulated DataNode should not write to a block that's being - written by another thread. (hairong) - - HADOOP-5465. Fix the problem of blocks remaining under-replicated by - providing synchronized modification to the counter xmitsInProgress in - DataNode. (hairong) - - HADOOP-5557. Fixes some minor problems in TestOverReplicatedBlocks. - (szetszwo) - -Release 0.18.3 - 2009-01-27 - - IMPROVEMENTS - - HADOOP-4150. Include librecordio in hadoop releases. (Giridharan Kesavan - via acmurthy) - - HADOOP-4668. Improve documentation for setCombinerClass to clarify the - restrictions on combiners. (omalley) - - BUG FIXES - - HADOOP-4499. DFSClient should invoke checksumOk only once. (Raghu Angadi) - - HADOOP-4597. Calculate mis-replicated blocks when safe-mode is turned - off manually. (shv) - - HADOOP-3121. lsr should keep listing the remaining items but not - terminate if there is any IOException. (szetszwo) - - HADOOP-4610. Always calculate mis-replicated blocks when safe-mode is - turned off. (shv) - - HADOOP-3883. Limit namenode to assign at most one generation stamp for - a particular block within a short period. (szetszwo) - - HADOOP-4556. Block went missing. (hairong) - - HADOOP-4643. NameNode should exclude excessive replicas when counting - live replicas for a block. (hairong) - - HADOOP-4703. Should not wait for proxy forever in lease recovering. - (szetszwo) - - HADOOP-4647. NamenodeFsck should close the DFSClient it has created. - (szetszwo) - - HADOOP-4616. Fuse-dfs can handle bad values from FileSystem.read call. - (Pete Wyckoff via dhruba) - - HADOOP-4061. Throttle Datanode decommission monitoring in Namenode. - (szetszwo) - - HADOOP-4659. Root cause of connection failure is being lost to code that - uses it for delaying startup. (Steve Loughran and Hairong via hairong) - - HADOOP-4614. Lazily open segments when merging map spills to avoid using - too many file descriptors. (Yuri Pradkin via cdouglas) - - HADOOP-4257. The DFS client should pick only one datanode as the candidate - to initiate lease recovery. (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-4713. Fix librecordio to handle records larger than 64k. (Christian - Kunz via cdouglas) - - HADOOP-4635. Fix a memory leak in fuse dfs. (pete wyckoff via mahadev) - - HADOOP-4714. Report status between merges and make the number of records - between progress reports configurable. (Jothi Padmanabhan via cdouglas) - - HADOOP-4726. Fix documentation typos "the the". (Edward J. Yoon via - szetszwo) - - HADOOP-4679. Datanode prints tons of log messages: waiting for threadgroup - to exit, active threads is XX. (hairong) - - HADOOP-4746. Job output directory should be normalized. (hairong) - - HADOOP-4717. Removal of default port# in NameNode.getUri() causes a - map/reduce job failed to prompt temporary output. (hairong) - - HADOOP-4778. Check for zero size block meta file when updating a block. - (szetszwo) - - HADOOP-4742. Replica gets deleted by mistake. (Wang Xu via hairong) - - HADOOP-4702. Failed block replication leaves an incomplete block in - receiver's tmp data directory. (hairong) - - HADOOP-4613. Fix block browsing on Web UI. (Johan Oskarsson via shv) - - HADOOP-4806. HDFS rename should not use src path as a regular expression. - (szetszwo) - - HADOOP-4795. Prevent lease monitor getting into an infinite loop when - leases and the namespace tree does not match. (szetszwo) - - HADOOP-4620. Fixes Streaming to handle well the cases of map/reduce with empty - input/output. (Ravi Gummadi via ddas) - - HADOOP-4857. Fixes TestUlimit to have exactly 1 map in the jobs spawned. - (Ravi Gummadi via ddas) - - HADOOP-4810. Data lost at cluster startup time. (hairong) - - HADOOP-4797. Improve how RPC server reads and writes large buffers. Avoids - soft-leak of direct buffers and excess copies in NIO layer. (Raghu Angadi) - - HADOOP-4840. TestNodeCount sometimes fails with NullPointerException. - (hairong) - - HADOOP-4904. Fix deadlock while leaving safe mode. (shv) - - HADOOP-1980. 'dfsadmin -safemode enter' should prevent the namenode from - leaving safemode automatically. (shv) - - HADOOP-4951. Lease monitor should acquire the LeaseManager lock but not the - Monitor lock. (szetszwo) - - HADOOP-4935. processMisReplicatedBlocks() should not clear - excessReplicateMap. (shv) - - HADOOP-4961. Fix ConcurrentModificationException in lease recovery - of empty files. (shv) - - HADOOP-4971. A long (unexpected) delay at datanodes could make subsequent - block reports from many datanode at the same time. (Raghu Angadi) - - HADOOP-4910. NameNode should exclude replicas when choosing excessive - replicas to delete to avoid data lose. (hairong) - - HADOOP-4983. Fixes a problem in updating Counters in the status reporting. - (Amareshwari Sriramadasu via ddas) - -Release 0.18.2 - 2008-11-03 - - BUG FIXES - - HADOOP-3614. Fix a bug that Datanode may use an old GenerationStamp to get - meta file. (szetszwo) - - HADOOP-4314. Simulated datanodes should not include blocks that are still - being written in their block report. (Raghu Angadi) - - HADOOP-4228. dfs datanode metrics, bytes_read and bytes_written, overflow - due to incorrect type used. (hairong) - - HADOOP-4395. The FSEditLog loading is incorrect for the case OP_SET_OWNER. - (szetszwo) - - HADOOP-4351. FSNamesystem.getBlockLocationsInternal throws - ArrayIndexOutOfBoundsException. (hairong) - - HADOOP-4403. Make TestLeaseRecovery and TestFileCreation more robust. - (szetszwo) - - HADOOP-4292. Do not support append() for LocalFileSystem. (hairong) - - HADOOP-4399. Make fuse-dfs multi-thread access safe. - (Pete Wyckoff via dhruba) - - HADOOP-4369. Use setMetric(...) instead of incrMetric(...) for metrics - averages. (Brian Bockelman via szetszwo) - - HADOOP-4469. Rename and add the ant task jar file to the tar file. (nigel) - - HADOOP-3914. DFSClient sends Checksum Ok only once for a block. - (Christian Kunz via hairong) - - HADOOP-4467. SerializationFactory now uses the current context ClassLoader - allowing for user supplied Serialization instances. (Chris Wensel via - acmurthy) - - HADOOP-4517. Release FSDataset lock before joining ongoing create threads. - (szetszwo) - - HADOOP-4526. fsck failing with NullPointerException. (hairong) - - HADOOP-4483 Honor the max parameter in DatanodeDescriptor.getBlockArray(..) - (Ahad Rana and Hairong Kuang via szetszwo) - - HADOOP-4340. Correctly set the exit code from JobShell.main so that the - 'hadoop jar' command returns the right code to the user. (acmurthy) - - NEW FEATURES - - HADOOP-2421. Add jdiff output to documentation, listing all API - changes from the prior release. (cutting) - -Release 0.18.1 - 2008-09-17 - - IMPROVEMENTS - - HADOOP-3934. Upgrade log4j to 1.2.15. (omalley) - - BUG FIXES - - HADOOP-3995. In case of quota failure on HDFS, rename does not restore - source filename. (rangadi) - - HADOOP-3821. Prevent SequenceFile and IFile from duplicating codecs in - CodecPool when closed more than once. (Arun Murthy via cdouglas) - - HADOOP-4040. Remove coded default of the IPC idle connection timeout - from the TaskTracker, which was causing HDFS client connections to not be - collected. (ddas via omalley) - - HADOOP-4046. Made WritableComparable's constructor protected instead of - private to re-enable class derivation. (cdouglas via omalley) - - HADOOP-3940. Fix in-memory merge condition to wait when there are no map - outputs or when the final map outputs are being fetched without contention. - (cdouglas) - -Release 0.18.0 - 2008-08-19 - - INCOMPATIBLE CHANGES - - HADOOP-2703. The default options to fsck skips checking files - that are being written to. The output of fsck is incompatible - with previous release. (lohit vijayarenu via dhruba) - - HADOOP-2865. FsShell.ls() printout format changed to print file names - in the end of the line. (Edward J. Yoon via shv) - - HADOOP-3283. The Datanode has a RPC server. It currently supports - two RPCs: the first RPC retrives the metadata about a block and the - second RPC sets the generation stamp of an existing block. - (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-2797. Code related to upgrading to 0.14 (Block CRCs) is - removed. As result, upgrade to 0.18 or later from 0.13 or earlier - is not supported. If upgrading from 0.13 or earlier is required, - please upgrade to an intermediate version (0.14-0.17) and then - to this version. (rangadi) - - HADOOP-544. This issue introduces new classes JobID, TaskID and - TaskAttemptID, which should be used instead of their string counterparts. - Functions in JobClient, TaskReport, RunningJob, jobcontrol.Job and - TaskCompletionEvent that use string arguments are deprecated in favor - of the corresponding ones that use ID objects. Applications can use - xxxID.toString() and xxxID.forName() methods to convert/restore objects - to/from strings. (Enis Soztutar via ddas) - - HADOOP-2188. RPC client sends a ping rather than throw timeouts. - RPC server does not throw away old RPCs. If clients and the server are on - different versions, they are not able to function well. In addition, - The property ipc.client.timeout is removed from the default hadoop - configuration. It also removes metrics RpcOpsDiscardedOPsNum. (hairong) - - HADOOP-2181. This issue adds logging for input splits in Jobtracker log - and jobHistory log. Also adds web UI for viewing input splits in job UI - and history UI. (Amareshwari Sriramadasu via ddas) - - HADOOP-3226. Run combiners multiple times over map outputs as they - are merged in both the map and the reduce tasks. (cdouglas via omalley) - - HADOOP-3329. DatanodeDescriptor objects should not be stored in the - fsimage. (dhruba) - - HADOOP-2656. The Block object has a generation stamp inside it. - Existing blocks get a generation stamp of 0. This is needed to support - appends. (dhruba) - - HADOOP-3390. Removed deprecated ClientProtocol.abandonFileInProgress(). - (Tsz Wo (Nicholas), SZE via rangadi) - - HADOOP-3405. Made some map/reduce internal classes non-public: - MapTaskStatus, ReduceTaskStatus, JobSubmissionProtocol, - CompletedJobStatusStore. (enis via omaley) - - HADOOP-3265. Removed depcrecated API getFileCacheHints(). - (Lohit Vijayarenu via rangadi) - - HADOOP-3310. The namenode instructs the primary datanode to do lease - recovery. The block gets a new generation stamp. - (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-2909. Improve IPC idle connection management. Property - ipc.client.maxidletime is removed from the default configuration, - instead it is defined as twice of the ipc.client.connection.maxidletime. - A connection with outstanding requests won't be treated as idle. - (hairong) - - HADOOP-3459. Change in the output format of dfs -ls to more closely match - /bin/ls. New format is: perm repl owner group size date name - (Mukund Madhugiri via omally) - - HADOOP-3113. An fsync invoked on a HDFS file really really - persists data! The datanode moves blocks in the tmp directory to - the real block directory on a datanode-restart. (dhruba) - - HADOOP-3452. Change fsck to return non-zero status for a corrupt - FileSystem. (lohit vijayarenu via cdouglas) - - HADOOP-3193. Include the address of the client that found the corrupted - block in the log. Also include a CorruptedBlocks metric to track the size - of the corrupted block map. (cdouglas) - - HADOOP-3512. Separate out the tools into a tools jar. (omalley) - - HADOOP-3598. Ensure that temporary task-output directories are not created - if they are not necessary e.g. for Maps with no side-effect files. - (acmurthy) - - HADOOP-3665. Modify WritableComparator so that it only creates instances - of the keytype if the type does not define a WritableComparator. Calling - the superclass compare will throw a NullPointerException. Also define - a RawComparator for NullWritable and permit it to be written as a key - to SequenceFiles. (cdouglas) - - HADOOP-3673. Avoid deadlock caused by DataNode RPC receoverBlock(). - (Tsz Wo (Nicholas), SZE via rangadi) - - NEW FEATURES - - HADOOP-3074. Provides a UrlStreamHandler for DFS and other FS, - relying on FileSystem (taton) - - HADOOP-2585. Name-node imports namespace data from a recent checkpoint - accessible via a NFS mount. (shv) - - HADOOP-3061. Writable types for doubles and bytes. (Andrzej - Bialecki via omalley) - - HADOOP-2857. Allow libhdfs to set jvm options. (Craig Macdonald - via omalley) - - HADOOP-3317. Add default port for HDFS namenode. The port in - "hdfs:" URIs now defaults to 8020, so that one may simply use URIs - of the form "hdfs://example.com/dir/file". (cutting) - - HADOOP-2019. Adds support for .tar, .tgz and .tar.gz files in - DistributedCache (Amareshwari Sriramadasu via ddas) - - HADOOP-3058. Add FSNamesystem status metrics. - (Lohit Vjayarenu via rangadi) - - HADOOP-1915. Allow users to specify counters via strings instead - of enumerations. (tomwhite via omalley) - - HADOOP-2065. Delay invalidating corrupt replicas of block until its - is removed from under replicated state. If all replicas are found to - be corrupt, retain all copies and mark the block as corrupt. - (Lohit Vjayarenu via rangadi) - - HADOOP-3221. Adds org.apache.hadoop.mapred.lib.NLineInputFormat, which - splits files into splits each of N lines. N can be specified by - configuration property "mapred.line.input.format.linespermap", which - defaults to 1. (Amareshwari Sriramadasu via ddas) - - HADOOP-3336. Direct a subset of annotated FSNamesystem calls for audit - logging. (cdouglas) - - HADOOP-3400. A new API FileSystem.deleteOnExit() that facilitates - handling of temporary files in HDFS. (dhruba) - - HADOOP-4. Add fuse-dfs to contrib, permitting one to mount an - HDFS filesystem on systems that support FUSE, e.g., Linux. - (Pete Wyckoff via cutting) - - HADOOP-3246. Add FTPFileSystem. (Ankur Goel via cutting) - - HADOOP-3250. Extend FileSystem API to allow appending to files. - (Tsz Wo (Nicholas), SZE via cdouglas) - - HADOOP-3177. Implement Syncable interface for FileSystem. - (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-1328. Implement user counters in streaming. (tomwhite via - omalley) - - HADOOP-3187. Quotas for namespace management. (Hairong Kuang via ddas) - - HADOOP-3307. Support for Archives in Hadoop. (Mahadev Konar via ddas) - - HADOOP-3460. Add SequenceFileAsBinaryOutputFormat to permit direct - writes of serialized data. (Koji Noguchi via cdouglas) - - HADOOP-3230. Add ability to get counter values from command - line. (tomwhite via omalley) - - HADOOP-930. Add support for native S3 files. (tomwhite via cutting) - - HADOOP-3502. Quota API needs documentation in Forrest. (hairong) - - HADOOP-3413. Allow SequenceFile.Reader to use serialization - framework. (tomwhite via omalley) - - HADOOP-3541. Import of the namespace from a checkpoint documented - in hadoop user guide. (shv) - - IMPROVEMENTS - - HADOOP-3677. Simplify generation stamp upgrade by making is a - local upgrade on datandodes. Deleted distributed upgrade. - (rangadi) - - HADOOP-2928. Remove deprecated FileSystem.getContentLength(). - (Lohit Vijayarenu via rangadi) - - HADOOP-3130. Make the connect timeout smaller for getFile. - (Amar Ramesh Kamat via ddas) - - HADOOP-3160. Remove deprecated exists() from ClientProtocol and - FSNamesystem (Lohit Vjayarenu via rangadi) - - HADOOP-2910. Throttle IPC Clients during bursts of requests or - server slowdown. Clients retry connection for up to 15 minutes - when socket connection times out. (hairong) - - HADOOP-3295. Allow TextOutputFormat to use configurable spearators. - (Zheng Shao via cdouglas). - - HADOOP-3308. Improve QuickSort by excluding values eq the pivot from the - partition. (cdouglas) - - HADOOP-2461. Trim property names in configuration. - (Tsz Wo (Nicholas), SZE via shv) - - HADOOP-2799. Deprecate o.a.h.io.Closable in favor of java.io.Closable. - (Tsz Wo (Nicholas), SZE via cdouglas) - - HADOOP-3345. Enhance the hudson-test-patch target to cleanup messages, - fix minor defects, and add eclipse plugin and python unit tests. (nigel) - - HADOOP-3144. Improve robustness of LineRecordReader by defining a maximum - line length (mapred.linerecordreader.maxlength), thereby avoiding reading - too far into the following split. (Zheng Shao via cdouglas) - - HADOOP-3334. Move lease handling from FSNamesystem into a seperate class. - (Tsz Wo (Nicholas), SZE via rangadi) - - HADOOP-3332. Reduces the amount of logging in Reducer's shuffle phase. - (Devaraj Das) - - HADOOP-3355. Enhances Configuration class to accept hex numbers for getInt - and getLong. (Amareshwari Sriramadasu via ddas) - - HADOOP-3350. Add an argument to distcp to permit the user to limit the - number of maps. (cdouglas) - - HADOOP-3013. Add corrupt block reporting to fsck. - (lohit vijayarenu via cdouglas) - - HADOOP-3377. Remove TaskRunner::replaceAll and replace with equivalent - String::replace. (Brice Arnould via cdouglas) - - HADOOP-3398. Minor improvement to a utility function in that participates - in backoff calculation. (cdouglas) - - HADOOP-3381. Clear referenced when directories are deleted so that - effect of memory leaks are not multiplied. (rangadi) - - HADOOP-2867. Adds the task's CWD to its LD_LIBRARY_PATH. - (Amareshwari Sriramadasu via ddas) - - HADOOP-3232. DU class runs the 'du' command in a seperate thread so - that it does not block user. DataNode misses heartbeats in large - nodes otherwise. (Johan Oskarsson via rangadi) - - HADOOP-3035. During block transfers between datanodes, the receiving - datanode, now can report corrupt replicas received from src node to - the namenode. (Lohit Vijayarenu via rangadi) - - HADOOP-3434. Retain the cause of the bind failure in Server::bind. - (Steve Loughran via cdouglas) - - HADOOP-3429. Increases the size of the buffers used for the communication - for Streaming jobs. (Amareshwari Sriramadasu via ddas) - - HADOOP-3486. Change default for initial block report to 0 seconds - and document it. (Sanjay Radia via omalley) - - HADOOP-3448. Improve the text in the assertion making sure the - layout versions are consistent in the data node. (Steve Loughran - via omalley) - - HADOOP-2095. Improve the Map-Reduce shuffle/merge by cutting down - buffer-copies; changed intermediate sort/merge to use the new IFile format - rather than SequenceFiles and compression of map-outputs is now - implemented by compressing the entire file rather than SequenceFile - compression. Shuffle also has been changed to use a simple byte-buffer - manager rather than the InMemoryFileSystem. - Configuration changes to hadoop-default.xml: - deprecated mapred.map.output.compression.type - (acmurthy) - - HADOOP-236. JobTacker now refuses connection from a task tracker with a - different version number. (Sharad Agarwal via ddas) - - HADOOP-3427. Improves the shuffle scheduler. It now waits for notifications - from shuffle threads when it has scheduled enough, before scheduling more. - (ddas) - - HADOOP-2393. Moves the handling of dir deletions in the tasktracker to - a separate thread. (Amareshwari Sriramadasu via ddas) - - HADOOP-3501. Deprecate InMemoryFileSystem. (cutting via omalley) - - HADOOP-3366. Stall the shuffle while in-memory merge is in progress. - (acmurthy) - - HADOOP-2916. Refactor src structure, but leave package structure alone. - (Raghu Angadi via mukund) - - HADOOP-3492. Add forrest documentation for user archives. - (Mahadev Konar via hairong) - - HADOOP-3467. Improve documentation for FileSystem::deleteOnExit. - (Tsz Wo (Nicholas), SZE via cdouglas) - - HADOOP-3379. Documents stream.non.zero.exit.status.is.failure for Streaming. - (Amareshwari Sriramadasu via ddas) - - HADOOP-3096. Improves documentation about the Task Execution Environment in - the Map-Reduce tutorial. (Amareshwari Sriramadasu via ddas) - - HADOOP-2984. Add forrest documentation for DistCp. (cdouglas) - - HADOOP-3406. Add forrest documentation for Profiling. - (Amareshwari Sriramadasu via ddas) - - HADOOP-2762. Add forrest documentation for controls of memory limits on - hadoop daemons and Map-Reduce tasks. (Amareshwari Sriramadasu via ddas) - - HADOOP-3535. Fix documentation and name of IOUtils.close to - reflect that it should only be used in cleanup contexts. (omalley) - - HADOOP-3593. Updates the mapred tutorial. (ddas) - - HADOOP-3547. Documents the way in which native libraries can be distributed - via the DistributedCache. (Amareshwari Sriramadasu via ddas) - - HADOOP-3606. Updates the Streaming doc. (Amareshwari Sriramadasu via ddas) - - HADOOP-3532. Add jdiff reports to the build scripts. (omalley) - - HADOOP-3100. Develop tests to test the DFS command line interface. (mukund) - - HADOOP-3688. Fix up HDFS docs. (Robert Chansler via hairong) - - OPTIMIZATIONS - - HADOOP-3274. The default constructor of BytesWritable creates empty - byte array. (Tsz Wo (Nicholas), SZE via shv) - - HADOOP-3272. Remove redundant copy of Block object in BlocksMap. - (Lohit Vjayarenu via shv) - - HADOOP-3164. Reduce DataNode CPU usage by using FileChannel.tranferTo(). - On Linux DataNode takes 5 times less CPU while serving data. Results may - vary on other platforms. (rangadi) - - HADOOP-3248. Optimization of saveFSImage. (Dhruba via shv) - - HADOOP-3297. Fetch more task completion events from the job - tracker and task tracker. (ddas via omalley) - - HADOOP-3364. Faster image and log edits loading. (shv) - - HADOOP-3369. Fast block processing during name-node startup. (shv) - - HADOOP-1702. Reduce buffer copies when data is written to DFS. - DataNodes take 30% less CPU while writing data. (rangadi) - - HADOOP-3095. Speed up split generation in the FileInputSplit, - especially for non-HDFS file systems. Deprecates - InputFormat.validateInput. (tomwhite via omalley) - - HADOOP-3552. Add forrest documentation for Hadoop commands. - (Sharad Agarwal via cdouglas) - - BUG FIXES - - HADOOP-2905. 'fsck -move' triggers NPE in NameNode. - (Lohit Vjayarenu via rangadi) - - Increment ClientProtocol.versionID missed by HADOOP-2585. (shv) - - HADOOP-3254. Restructure internal namenode methods that process - heartbeats to use well-defined BlockCommand object(s) instead of - using the base java Object. (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-3176. Change lease record when a open-for-write-file - gets renamed. (dhruba) - - HADOOP-3269. Fix a case when namenode fails to restart - while processing a lease record. ((Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-3282. Port issues in TestCheckpoint resolved. (shv) - - HADOOP-3268. file:// URLs issue in TestUrlStreamHandler under Windows. - (taton) - - HADOOP-3127. Deleting files in trash should really remove them. - (Brice Arnould via omalley) - - HADOOP-3300. Fix locking of explicit locks in NetworkTopology. - (tomwhite via omalley) - - HADOOP-3270. Constant DatanodeCommands are stored in static final - immutable variables for better code clarity. - (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-2793. Fix broken links for worst performing shuffle tasks in - the job history page. (Amareshwari Sriramadasu via ddas) - - HADOOP-3313. Avoid unnecessary calls to System.currentTimeMillis - in RPC::Invoker. (cdouglas) - - HADOOP-3318. Recognize "Darwin" as an alias for "Mac OS X" to - support Soylatte. (Sam Pullara via omalley) - - HADOOP-3301. Fix misleading error message when S3 URI hostname - contains an underscore. (tomwhite via omalley) - - HADOOP-3338. Fix Eclipse plugin to compile after HADOOP-544 was - committed. Updated all references to use the new JobID representation. - (taton via nigel) - - HADOOP-3337. Loading FSEditLog was broken by HADOOP-3283 since it - changed Writable serialization of DatanodeInfo. This patch handles it. - (Tsz Wo (Nicholas), SZE via rangadi) - - HADOOP-3101. Prevent JobClient from throwing an exception when printing - usage. (Edward J. Yoon via cdouglas) - - HADOOP-3119. Update javadoc for Text::getBytes to better describe its - behavior. (Tim Nelson via cdouglas) - - HADOOP-2294. Fix documentation in libhdfs to refer to the correct free - function. (Craig Macdonald via cdouglas) - - HADOOP-3335. Prevent the libhdfs build from deleting the wrong - files on make clean. (cutting via omalley) - - HADOOP-2930. Make {start,stop}-balancer.sh work even if hadoop-daemon.sh - is not in the PATH. (Spiros Papadimitriou via hairong) - - HADOOP-3085. Catch Exception in metrics util classes to ensure that - misconfigured metrics don't prevent others from updating. (cdouglas) - - HADOOP-3299. CompositeInputFormat should configure the sub-input - formats. (cdouglas via omalley) - - HADOOP-3309. Lower io.sort.mb and fs.inmemory.size.mb for MiniMRDFSSort - unit test so it passes on Windows. (lohit vijayarenu via cdouglas) - - HADOOP-3348. TestUrlStreamHandler should set URLStreamFactory after - DataNodes are initialized. (Lohit Vijayarenu via rangadi) - - HADOOP-3371. Ignore InstanceAlreadyExistsException from - MBeanUtil::registerMBean. (lohit vijayarenu via cdouglas) - - HADOOP-3349. A file rename was incorrectly changing the name inside a - lease record. (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-3365. Removes an unnecessary copy of the key from SegmentDescriptor - to MergeQueue. (Devaraj Das) - - HADOOP-3388. Fix for TestDatanodeBlockScanner to handle blocks with - generation stamps in them. (dhruba) - - HADOOP-3203. Fixes TaskTracker::localizeJob to pass correct file sizes - for the jarfile and the jobfile. (Amareshwari Sriramadasu via ddas) - - HADOOP-3391. Fix a findbugs warning introduced by HADOOP-3248 (rangadi) - - HADOOP-3393. Fix datanode shutdown to call DataBlockScanner::shutdown and - close its log, even if the scanner thread is not running. (lohit vijayarenu - via cdouglas) - - HADOOP-3399. A debug message was logged at info level. (rangadi) - - HADOOP-3396. TestDatanodeBlockScanner occationally fails. - (Lohit Vijayarenu via rangadi) - - HADOOP-3339. Some of the failures on 3rd datanode in DFS write pipelie - are not detected properly. This could lead to hard failure of client's - write operation. (rangadi) - - HADOOP-3409. Namenode should save the root inode into fsimage. (hairong) - - HADOOP-3296. Fix task cache to work for more than two levels in the cache - hierarchy. This also adds a new counter to track cache hits at levels - greater than two. (Amar Kamat via cdouglas) - - HADOOP-3375. Lease paths were sometimes not removed from - LeaseManager.sortedLeasesByPath. (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-3424. Values returned by getPartition should be checked to - make sure they are in the range 0 to #reduces - 1 (cdouglas via - omalley) - - HADOOP-3408. Change FSNamesystem to send its metrics as integers to - accommodate collectors that don't support long values. (lohit vijayarenu - via cdouglas) - - HADOOP-3403. Fixes a problem in the JobTracker to do with handling of lost - tasktrackers. (Arun Murthy via ddas) - - HADOOP-1318. Completed maps are not failed if the number of reducers are - zero. (Amareshwari Sriramadasu via ddas). - - HADOOP-3351. Fixes the history viewer tool to not do huge StringBuffer - allocations. (Amareshwari Sriramadasu via ddas) - - HADOOP-3419. Fixes TestFsck to wait for updates to happen before - checking results to make the test more reliable. (Lohit Vijaya - Renu via omalley) - - HADOOP-3259. Makes failure to read system properties due to a - security manager non-fatal. (Edward Yoon via omalley) - - HADOOP-3451. Update libhdfs to use FileSystem::getFileBlockLocations - instead of removed getFileCacheHints. (lohit vijayarenu via cdouglas) - - HADOOP-3401. Update FileBench to set the new - "mapred.work.output.dir" property to work post-3041. (cdouglas via omalley) - - HADOOP-2669. DFSClient locks pendingCreates appropriately. (dhruba) - - HADOOP-3410. Fix KFS implemenation to return correct file - modification time. (Sriram Rao via cutting) - - HADOOP-3340. Fix DFS metrics for BlocksReplicated, HeartbeatsNum, and - BlockReportsAverageTime. (lohit vijayarenu via cdouglas) - - HADOOP-3435. Remove the assuption in the scripts that bash is at - /bin/bash and fix the test patch to require bash instead of sh. - (Brice Arnould via omalley) - - HADOOP-3471. Fix spurious errors from TestIndexedSort and add additional - logging to let failures be reproducible. (cdouglas) - - HADOOP-3443. Avoid copying map output across partitions when renaming a - single spill. (omalley via cdouglas) - - HADOOP-3454. Fix Text::find to search only valid byte ranges. (Chad Whipkey - via cdouglas) - - HADOOP-3417. Removes the static configuration variable, - commandLineConfig from JobClient. Moves the cli parsing from - JobShell to GenericOptionsParser. Thus removes the class - org.apache.hadoop.mapred.JobShell. (Amareshwari Sriramadasu via - ddas) - - HADOOP-2132. Only RUNNING/PREP jobs can be killed. (Jothi Padmanabhan - via ddas) - - HADOOP-3476. Code cleanup in fuse-dfs. - (Peter Wyckoff via dhruba) - - HADOOP-2427. Ensure that the cwd of completed tasks is cleaned-up - correctly on task-completion. (Amareshwari Sri Ramadasu via acmurthy) - - HADOOP-2565. Remove DFSPath cache of FileStatus. - (Tsz Wo (Nicholas), SZE via hairong) - - HADOOP-3326. Cleanup the local-fs and in-memory merge in the ReduceTask by - spawing only one thread each for the on-disk and in-memory merge. - (Sharad Agarwal via acmurthy) - - HADOOP-3493. Fix TestStreamingFailure to use FileUtil.fullyDelete to - ensure correct cleanup. (Lohit Vijayarenu via acmurthy) - - HADOOP-3455. Fix NPE in ipc.Client in case of connection failure and - improve its synchronization. (hairong) - - HADOOP-3240. Fix a testcase to not create files in the current directory. - Instead the file is created in the test directory (Mahadev Konar via ddas) - - HADOOP-3496. Fix failure in TestHarFileSystem.testArchives due to change - in HADOOP-3095. (tomwhite) - - HADOOP-3135. Get the system directory from the JobTracker instead of from - the conf. (Subramaniam Krishnan via ddas) - - HADOOP-3503. Fix a race condition when client and namenode start - simultaneous recovery of the same block. (dhruba & Tsz Wo - (Nicholas), SZE) - - HADOOP-3440. Fixes DistributedCache to not create symlinks for paths which - don't have fragments even when createSymLink is true. - (Abhijit Bagri via ddas) - - HADOOP-3463. Hadoop-daemons script should cd to $HADOOP_HOME. (omalley) - - HADOOP-3489. Fix NPE in SafeModeMonitor. (Lohit Vijayarenu via shv) - - HADOOP-3509. Fix NPE in FSNamesystem.close. (Tsz Wo (Nicholas), SZE via - shv) - - HADOOP-3491. Name-node shutdown causes InterruptedException in - ResolutionMonitor. (Lohit Vijayarenu via shv) - - HADOOP-3511. Fixes namenode image to not set the root's quota to an - invalid value when the quota was not saved in the image. (hairong) - - HADOOP-3516. Ensure the JobClient in HadoopArchives is initialized - with a configuration. (Subramaniam Krishnan via omalley) - - HADOOP-3513. Improve NNThroughputBenchmark log messages. (shv) - - HADOOP-3519. Fix NPE in DFS FileSystem rename. (hairong via tomwhite) - - HADOOP-3528. Metrics FilesCreated and files_deleted metrics - do not match. (Lohit via Mahadev) - - HADOOP-3418. When a directory is deleted, any leases that point to files - in the subdirectory are removed. ((Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-3542. Diables the creation of _logs directory for the archives - directory. (Mahadev Konar via ddas) - - HADOOP-3544. Fixes a documentation issue for hadoop archives. - (Mahadev Konar via ddas) - - HADOOP-3517. Fixes a problem in the reducer due to which the last InMemory - merge may be missed. (Arun Murthy via ddas) - - HADOOP-3548. Fixes build.xml to copy all *.jar files to the dist. - (Owen O'Malley via ddas) - - HADOOP-3363. Fix unformatted storage detection in FSImage. (shv) - - HADOOP-3560. Fixes a problem to do with split creation in archives. - (Mahadev Konar via ddas) - - HADOOP-3545. Fixes a overflow problem in archives. - (Mahadev Konar via ddas) - - HADOOP-3561. Prevent the trash from deleting its parent directories. - (cdouglas) - - HADOOP-3575. Fix the clover ant target after package refactoring. - (Nigel Daley via cdouglas) - - HADOOP-3539. Fix the tool path in the bin/hadoop script under - cygwin. (Tsz Wo (Nicholas), Sze via omalley) - - HADOOP-3520. TestDFSUpgradeFromImage triggers a race condition in the - Upgrade Manager. Fixed. (dhruba) - - HADOOP-3586. Provide deprecated, backwards compatibile semantics for the - combiner to be run once and only once on each record. (cdouglas) - - HADOOP-3533. Add deprecated methods to provide API compatibility - between 0.18 and 0.17. Remove the deprecated methods in trunk. (omalley) - - HADOOP-3580. Fixes a problem to do with specifying a har as an input to - a job. (Mahadev Konar via ddas) - - HADOOP-3333. Don't assign a task to a tasktracker that it failed to - execute earlier (used to happen in the case of lost tasktrackers where - the tasktracker would reinitialize and bind to a different port). - (Jothi Padmanabhan and Arun Murthy via ddas) - - HADOOP-3534. Log IOExceptions that happen in closing the name - system when the NameNode shuts down. (Tsz Wo (Nicholas) Sze via omalley) - - HADOOP-3546. TaskTracker re-initialization gets stuck in cleaning up. - (Amareshwari Sriramadasu via ddas) - - HADOOP-3576. Fix NullPointerException when renaming a directory - to its subdirectory. (Tse Wo (Nicholas), SZE via hairong) - - HADOOP-3320. Fix NullPointerException in NetworkTopology.getDistance(). - (hairong) - - HADOOP-3569. KFS input stream read() now correctly reads 1 byte - instead of 4. (Sriram Rao via omalley) - - HADOOP-3599. Fix JobConf::setCombineOnceOnly to modify the instance rather - than a parameter. (Owen O'Malley via cdouglas) - - HADOOP-3590. Null pointer exception in JobTracker when the task tracker is - not yet resolved. (Amar Ramesh Kamat via ddas) - - HADOOP-3603. Fix MapOutputCollector to spill when io.sort.spill.percent is - 1.0 and to detect spills when emitted records write no data. (cdouglas) - - HADOOP-3615. Set DatanodeProtocol.versionID to the correct value. - (Tsz Wo (Nicholas), SZE via cdouglas) - - HADOOP-3559. Fix the libhdfs test script and config to work with the - current semantics. (lohit vijayarenu via cdouglas) - - HADOOP-3480. Need to update Eclipse template to reflect current trunk. - (Brice Arnould via tomwhite) - - HADOOP-3588. Fixed usability issues with archives. (mahadev) - - HADOOP-3635. Uncaught exception in DataBlockScanner. - (Tsz Wo (Nicholas), SZE via hairong) - - HADOOP-3639. Exception when closing DFSClient while multiple files are - open. (Benjamin Gufler via hairong) - - HADOOP-3572. SetQuotas usage interface has some minor bugs. (hairong) - - HADOOP-3649. Fix bug in removing blocks from the corrupted block map. - (Lohit Vijayarenu via shv) - - HADOOP-3604. Work around a JVM synchronization problem observed while - retrieving the address of direct buffers from compression code by obtaining - a lock during this call. (Arun C Murthy via cdouglas) - - HADOOP-3683. Fix dfs metrics to count file listings rather than files - listed. (lohit vijayarenu via cdouglas) - - HADOOP-3597. Fix SortValidator to use filesystems other than the default as - input. Validation job still runs on default fs. - (Jothi Padmanabhan via cdouglas) - - HADOOP-3693. Fix archives, distcp and native library documentation to - conform to style guidelines. (Amareshwari Sriramadasu via cdouglas) - - HADOOP-3653. Fix test-patch target to properly account for Eclipse - classpath jars. (Brice Arnould via nigel) - - HADOOP-3692. Fix documentation for Cluster setup and Quick start guides. - (Amareshwari Sriramadasu via ddas) - - HADOOP-3691. Fix streaming and tutorial docs. (Jothi Padmanabhan via ddas) - - HADOOP-3630. Fix NullPointerException in CompositeRecordReader from empty - sources (cdouglas) - - HADOOP-3706. Fix a ClassLoader issue in the mapred.join Parser that - prevents it from loading user-specified InputFormats. - (Jingkei Ly via cdouglas) - - HADOOP-3718. Fix KFSOutputStream::write(int) to output a byte instead of - an int, per the OutputStream contract. (Sriram Rao via cdouglas) - - HADOOP-3647. Add debug logs to help track down a very occassional, - hard-to-reproduce, bug in shuffle/merge on the reducer. (acmurthy) - - HADOOP-3716. Prevent listStatus in KosmosFileSystem from returning - null for valid, empty directories. (Sriram Rao via cdouglas) - - HADOOP-3752. Fix audit logging to record rename events. (cdouglas) - - HADOOP-3737. Fix CompressedWritable to call Deflater::end to release - compressor memory. (Grant Glouser via cdouglas) - - HADOOP-3670. Fixes JobTracker to clear out split bytes when no longer - required. (Amareshwari Sriramadasu via ddas) - - HADOOP-3755. Update gridmix to work with HOD 0.4 (Runping Qi via cdouglas) - - HADOOP-3743. Fix -libjars, -files, -archives options to work even if - user code does not implement tools. (Amareshwari Sriramadasu via mahadev) - - HADOOP-3774. Fix typos in shell output. (Tsz Wo (Nicholas), SZE via - cdouglas) - - HADOOP-3762. Fixed FileSystem cache to work with the default port. (cutting - via omalley) - - HADOOP-3798. Fix tests compilation. (Mukund Madhugiri via omalley) - - HADOOP-3794. Return modification time instead of zero for KosmosFileSystem. - (Sriram Rao via cdouglas) - - HADOOP-3806. Remove debug statement to stdout from QuickSort. (cdouglas) - - HADOOP-3776. Fix NPE at NameNode when datanode reports a block after it is - deleted at NameNode. (rangadi) - - HADOOP-3537. Disallow adding a datanode to a network topology when its - network location is not resolved. (hairong) - - HADOOP-3571. Fix bug in block removal used in lease recovery. (shv) - - HADOOP-3645. MetricsTimeVaryingRate returns wrong value for - metric_avg_time. (Lohit Vijayarenu via hairong) - - HADOOP-3521. Reverted the missing cast to float for sending Counters' values - to Hadoop metrics which was removed by HADOOP-544. (acmurthy) - - HADOOP-3820. Fixes two problems in the gridmix-env - a syntax error, and a - wrong definition of USE_REAL_DATASET by default. (Arun Murthy via ddas) - - HADOOP-3724. Fixes two problems related to storing and recovering lease - in the fsimage. (dhruba) - - HADOOP-3827. Fixed compression of empty map-outputs. (acmurthy) - - HADOOP-3865. Remove reference to FSNamesystem from metrics preventing - garbage collection. (Lohit Vijayarenu via cdouglas) - - HADOOP-3884. Fix so that Eclipse plugin builds against recent - Eclipse releases. (cutting) - - HADOOP-3837. Streaming jobs report progress status. (dhruba) - - HADOOP-3897. Fix a NPE in secondary namenode. (Lohit Vijayarenu via - cdouglas) - - HADOOP-3901. Fix bin/hadoop to correctly set classpath under cygwin. - (Tsz Wo (Nicholas) Sze via omalley) - - HADOOP-3947. Fix a problem in tasktracker reinitialization. - (Amareshwari Sriramadasu via ddas) - -Release 0.17.3 - Unreleased - - IMPROVEMENTS - - HADOOP-4164. Chinese translation of the documentation. (Xuebing Yan via - omalley) - - BUG FIXES - - HADOOP-4277. Checksum verification was mistakenly disabled for - LocalFileSystem. (Raghu Angadi) - - HADOOP-4271. Checksum input stream can sometimes return invalid - data to the user. (Ning Li via rangadi) - - HADOOP-4318. DistCp should use absolute paths for cleanup. (szetszwo) - - HADOOP-4326. ChecksumFileSystem does not override create(...) correctly. - (szetszwo) - -Release 0.17.2 - 2008-08-11 - - BUG FIXES - - HADOOP-3678. Avoid spurious exceptions logged at DataNode when clients - read from DFS. (rangadi) - - HADOOP-3707. NameNode keeps a count of number of blocks scheduled - to be written to a datanode and uses it to avoid allocating more - blocks than a datanode can hold. (rangadi) - - HADOOP-3760. Fix a bug with HDFS file close() mistakenly introduced - by HADOOP-3681. (Lohit Vijayarenu via rangadi) - - HADOOP-3681. DFSClient can get into an infinite loop while closing - a file if there are some errors. (Lohit Vijayarenu via rangadi) - - HADOOP-3002. Hold off block removal while in safe mode. (shv) - - HADOOP-3685. Unbalanced replication target. (hairong) - - HADOOP-3758. Shutdown datanode on version mismatch instead of retrying - continuously, preventing excessive logging at the namenode. - (lohit vijayarenu via cdouglas) - - HADOOP-3633. Correct exception handling in DataXceiveServer, and throttle - the number of xceiver threads in a data-node. (shv) - - HADOOP-3370. Ensure that the TaskTracker.runningJobs data-structure is - correctly cleaned-up on task completion. (Zheng Shao via acmurthy) - - HADOOP-3813. Fix task-output clean-up on HDFS to use the recursive - FileSystem.delete rather than the FileUtil.fullyDelete. (Amareshwari - Sri Ramadasu via acmurthy) - - HADOOP-3859. Allow the maximum number of xceivers in the data node to - be configurable. (Johan Oskarsson via omalley) - - HADOOP-3931. Fix corner case in the map-side sort that causes some values - to be counted as too large and cause pre-mature spills to disk. Some values - will also bypass the combiner incorrectly. (cdouglas via omalley) - -Release 0.17.1 - 2008-06-23 - - INCOMPATIBLE CHANGES - - HADOOP-3565. Fix the Java serialization, which is not enabled by - default, to clear the state of the serializer between objects. - (tomwhite via omalley) - - IMPROVEMENTS - - HADOOP-3522. Improve documentation on reduce pointing out that - input keys and values will be reused. (omalley) - - HADOOP-3487. Balancer uses thread pools for managing its threads; - therefore provides better resource management. (hairong) - - BUG FIXES - - HADOOP-2159 Namenode stuck in safemode. The counter blockSafe should - not be decremented for invalid blocks. (hairong) - - HADOOP-3472 MapFile.Reader getClosest() function returns incorrect results - when before is true (Todd Lipcon via Stack) - - HADOOP-3442. Limit recursion depth on the stack for QuickSort to prevent - StackOverflowErrors. To avoid O(n*n) cases, when partitioning depth exceeds - a multiple of log(n), change to HeapSort. (cdouglas) - - HADOOP-3477. Fix build to not package contrib/*/bin twice in - distributions. (Adam Heath via cutting) - - HADOOP-3475. Fix MapTask to correctly size the accounting allocation of - io.sort.mb. (cdouglas) - - HADOOP-3550. Fix the serialization data structures in MapTask where the - value lengths are incorrectly calculated. (cdouglas) - - HADOOP-3526. Fix contrib/data_join framework by cloning values retained - in the reduce. (Spyros Blanas via cdouglas) - - HADOOP-1979. Speed up fsck by adding a buffered stream. (Lohit - Vijaya Renu via omalley) - -Release 0.17.0 - 2008-05-18 - - INCOMPATIBLE CHANGES - - HADOOP-2786. Move hbase out of hadoop core - - HADOOP-2345. New HDFS transactions to support appending - to files. Disk layout version changed from -11 to -12. (dhruba) - - HADOOP-2192. Error messages from "dfs mv" command improved. - (Mahadev Konar via dhruba) - - HADOOP-1902. "dfs du" command without any arguments operates on the - current working directory. (Mahadev Konar via dhruba) - - HADOOP-2873. Fixed bad disk format introduced by HADOOP-2345. - Disk layout version changed from -12 to -13. See changelist 630992 - (dhruba) - - HADOOP-1985. This addresses rack-awareness for Map tasks and for - HDFS in a uniform way. (ddas) - - HADOOP-1986. Add support for a general serialization mechanism for - Map Reduce. (tomwhite) - - HADOOP-771. FileSystem.delete() takes an explicit parameter that - specifies whether a recursive delete is intended. - (Mahadev Konar via dhruba) - - HADOOP-2470. Remove getContentLength(String), open(String, long, long) - and isDir(String) from ClientProtocol. ClientProtocol version changed - from 26 to 27. (Tsz Wo (Nicholas), SZE via cdouglas) - - HADOOP-2822. Remove deprecated code for classes InputFormatBase and - PhasedFileSystem. (Amareshwari Sriramadasu via enis) - - HADOOP-2116. Changes the layout of the task execution directory. - (Amareshwari Sriramadasu via ddas) - - HADOOP-2828. The following deprecated methods in Configuration.java - have been removed - getObject(String name) - setObject(String name, Object value) - get(String name, Object defaultValue) - set(String name, Object value) - Iterator entries() - (Amareshwari Sriramadasu via ddas) - - HADOOP-2824. Removes one deprecated constructor from MiniMRCluster. - (Amareshwari Sriramadasu via ddas) - - HADOOP-2823. Removes deprecated methods getColumn(), getLine() from - org.apache.hadoop.record.compiler.generated.SimpleCharStream. - (Amareshwari Sriramadasu via ddas) - - HADOOP-3060. Removes one unused constructor argument from MiniMRCluster. - (Amareshwari Sriramadasu via ddas) - - HADOOP-2854. Remove deprecated o.a.h.ipc.Server::getUserInfo(). - (lohit vijayarenu via cdouglas) - - HADOOP-2563. Remove deprecated FileSystem::listPaths. - (lohit vijayarenu via cdouglas) - - HADOOP-2818. Remove deprecated methods in Counters. - (Amareshwari Sriramadasu via tomwhite) - - HADOOP-2831. Remove deprecated o.a.h.dfs.INode::getAbsoluteName() - (lohit vijayarenu via cdouglas) - - HADOOP-2839. Remove deprecated FileSystem::globPaths. - (lohit vijayarenu via cdouglas) - - HADOOP-2634. Deprecate ClientProtocol::exists. - (lohit vijayarenu via cdouglas) - - HADOOP-2410. Make EC2 cluster nodes more independent of each other. - Multiple concurrent EC2 clusters are now supported, and nodes may be - added to a cluster on the fly with new nodes starting in the same EC2 - availability zone as the cluster. Ganglia monitoring and large - instance sizes have also been added. (Chris K Wensel via tomwhite) - - HADOOP-2826. Deprecated FileSplit.getFile(), LineRecordReader.readLine(). - (Amareshwari Sriramadasu via ddas) - - HADOOP-3239. getFileInfo() returns null for non-existing files instead - of throwing FileNotFoundException. (Lohit Vijayarenu via shv) - - HADOOP-3266. Removed HOD changes from CHANGES.txt, as they are now inside - src/contrib/hod (Hemanth Yamijala via ddas) - - HADOOP-3280. Separate the configuration of the virtual memory size - (mapred.child.ulimit) from the jvm heap size, so that 64 bit - streaming applications are supported even when running with 32 bit - jvms. (acmurthy via omalley) - - NEW FEATURES - - HADOOP-1398. Add HBase in-memory block cache. (tomwhite) - - HADOOP-2178. Job History on DFS. (Amareshwari Sri Ramadasu via ddas) - - HADOOP-2063. A new parameter to dfs -get command to fetch a file - even if it is corrupted. (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-2219. A new command "df -count" that counts the number of - files and directories. (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-2906. Add an OutputFormat capable of using keys, values, and - config params to map records to different output files. - (Runping Qi via cdouglas) - - HADOOP-2346. Utilities to support timeout while writing to sockets. - DFSClient and DataNode sockets have 10min write timeout. (rangadi) - - HADOOP-2951. Add a contrib module that provides a utility to - build or update Lucene indexes using Map/Reduce. (Ning Li via cutting) - - HADOOP-1622. Allow multiple jar files for map reduce. - (Mahadev Konar via dhruba) - - HADOOP-2055. Allows users to set PathFilter on the FileInputFormat. - (Alejandro Abdelnur via ddas) - - HADOOP-2551. More environment variables like HADOOP_NAMENODE_OPTS - for better control of HADOOP_OPTS for each component. (rangadi) - - HADOOP-3001. Add job counters that measure the number of bytes - read and written to HDFS, S3, KFS, and local file systems. (omalley) - - HADOOP-3048. A new Interface and a default implementation to convert - and restore serializations of objects to/from strings. (enis) - - IMPROVEMENTS - - HADOOP-2655. Copy on write for data and metadata files in the - presence of snapshots. Needed for supporting appends to HDFS - files. (dhruba) - - HADOOP-1967. When a Path specifies the same scheme as the default - FileSystem but no authority, the default FileSystem's authority is - used. Also add warnings for old-format FileSystem names, accessor - methods for fs.default.name, and check for null authority in HDFS. - (cutting) - - HADOOP-2895. Let the profiling string be configurable. - (Martin Traverso via cdouglas) - - HADOOP-910. Enables Reduces to do merges for the on-disk map output files - in parallel with their copying. (Amar Kamat via ddas) - - HADOOP-730. Use rename rather than copy for local renames. (cdouglas) - - HADOOP-2810. Updated the Hadoop Core logo. (nigel) - - HADOOP-2057. Streaming should optionally treat a non-zero exit status - of a child process as a failed task. (Rick Cox via tomwhite) - - HADOOP-2765. Enables specifying ulimits for streaming/pipes tasks (ddas) - - HADOOP-2888. Make gridmix scripts more readily configurable and amenable - to automated execution. (Mukund Madhugiri via cdouglas) - - HADOOP-2908. A document that describes the DFS Shell command. - (Mahadev Konar via dhruba) - - HADOOP-2981. Update README.txt to reflect the upcoming use of - cryptography. (omalley) - - HADOOP-2804. Add support to publish CHANGES.txt as HTML when running - the Ant 'docs' target. (nigel) - - HADOOP-2559. Change DFS block placement to allocate the first replica - locally, the second off-rack, and the third intra-rack from the - second. (lohit vijayarenu via cdouglas) - - HADOOP-2939. Make the automated patch testing process an executable - Ant target, test-patch. (nigel) - - HADOOP-2239. Add HsftpFileSystem to permit transferring files over ssl. - (cdouglas) - - HADOOP-2886. Track individual RPC metrics. - (girish vaitheeswaran via dhruba) - - HADOOP-2373. Improvement in safe-mode reporting. (shv) - - HADOOP-3091. Modify FsShell command -put to accept multiple sources. - (Lohit Vijaya Renu via cdouglas) - - HADOOP-3092. Show counter values from job -status command. - (Tom White via ddas) - - HADOOP-1228. Ant task to generate Eclipse project files. (tomwhite) - - HADOOP-3093. Adds Configuration.getStrings(name, default-value) and - the corresponding setStrings. (Amareshwari Sriramadasu via ddas) - - HADOOP-3106. Adds documentation in forrest for debugging. - (Amareshwari Sriramadasu via ddas) - - HADOOP-3099. Add an option to distcp to preserve user, group, and - permission information. (Tsz Wo (Nicholas), SZE via cdouglas) - - HADOOP-2841. Unwrap AccessControlException and FileNotFoundException - from RemoteException for DFSClient. (shv) - - HADOOP-3152. Make index interval configuable when using - MapFileOutputFormat for map-reduce job. (Rong-En Fan via cutting) - - HADOOP-3143. Decrease number of slaves from 4 to 3 in TestMiniMRDFSSort, - as Hudson generates false negatives under the current load. - (Nigel Daley via cdouglas) - - HADOOP-3174. Illustrative example for MultipleFileInputFormat. (Enis - Soztutar via acmurthy) - - HADOOP-2993. Clarify the usage of JAVA_HOME in the Quick Start guide. - (acmurthy via nigel) - - HADOOP-3124. Make DataNode socket write timeout configurable. (rangadi) - - OPTIMIZATIONS - - HADOOP-2790. Fixed inefficient method hasSpeculativeTask by removing - repetitive calls to get the current time and late checking to see if - we want speculation on at all. (omalley) - - HADOOP-2758. Reduce buffer copies in DataNode when data is read from - HDFS, without negatively affecting read throughput. (rangadi) - - HADOOP-2399. Input key and value to combiner and reducer is reused. - (Owen O'Malley via ddas). - - HADOOP-2423. Code optimization in FSNamesystem.mkdirs. - (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-2606. ReplicationMonitor selects data-nodes to replicate directly - from needed replication blocks instead of looking up for the blocks for - each live data-node. (shv) - - HADOOP-2148. Eliminate redundant data-node blockMap lookups. (shv) - - HADOOP-2027. Return the number of bytes in each block in a file - via a single rpc to the namenode to speed up job planning. - (Lohit Vijaya Renu via omalley) - - HADOOP-2902. Replace uses of "fs.default.name" with calls to the - accessor methods added in HADOOP-1967. (cutting) - - HADOOP-2119. Optimize scheduling of jobs with large numbers of - tasks by replacing static arrays with lists of runnable tasks. - (Amar Kamat via omalley) - - HADOOP-2919. Reduce the number of memory copies done during the - map output sorting. Also adds two config variables: - io.sort.spill.percent - the percentages of io.sort.mb that should - cause a spill (default 80%) - io.sort.record.percent - the percent of io.sort.mb that should - hold key/value indexes (default 5%) - (cdouglas via omalley) - - HADOOP-3140. Doesn't add a task in the commit queue if the task hadn't - generated any output. (Amar Kamat via ddas) - - HADOOP-3168. Reduce the amount of logging in streaming to an - exponentially increasing number of records (up to 10,000 - records/log). (Zheng Shao via omalley) - - BUG FIXES - - HADOOP-2195. '-mkdir' behaviour is now closer to Linux shell in case of - errors. (Mahadev Konar via rangadi) - - HADOOP-2190. bring behaviour '-ls' and '-du' closer to Linux shell - commands in case of errors. (Mahadev Konar via rangadi) - - HADOOP-2193. 'fs -rm' and 'fs -rmr' show error message when the target - file does not exist. (Mahadev Konar via rangadi) - - HADOOP-2738 Text is not subclassable because set(Text) and compareTo(Object) - access the other instance's private members directly. (jimk) - - HADOOP-2779. Remove the references to HBase in the build.xml. (omalley) - - HADOOP-2194. dfs cat on a non-existent file throws FileNotFoundException. - (Mahadev Konar via dhruba) - - HADOOP-2767. Fix for NetworkTopology erroneously skipping the last leaf - node on a rack. (Hairong Kuang and Mark Butler via dhruba) - - HADOOP-1593. FsShell works with paths in non-default FileSystem. - (Mahadev Konar via dhruba) - - HADOOP-2191. du and dus command on non-existent directory gives - appropriate error message. (Mahadev Konar via dhruba) - - HADOOP-2832. Remove tabs from code of DFSClient for better - indentation. (dhruba) - - HADOOP-2844. distcp closes file handles for sequence files. - (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-2727. Fix links in Web UI of the hadoop daemons and some docs - (Amareshwari Sri Ramadasu via ddas) - - HADOOP-2871. Fixes a problem to do with file: URI in the JobHistory init. - (Amareshwari Sri Ramadasu via ddas) - - HADOOP-2800. Deprecate SetFile.Writer constructor not the whole class. - (Johan Oskarsson via tomwhite) - - HADOOP-2891. DFSClient.close() closes all open files. (dhruba) - - HADOOP-2845. Fix dfsadmin disk utilization report on Solaris. - (Martin Traverso via tomwhite) - - HADOOP-2912. MiniDFSCluster restart should wait for namenode to exit - safemode. This was causing TestFsck to fail. (Mahadev Konar via dhruba) - - HADOOP-2820. The following classes in streaming are removed : - StreamLineRecordReader StreamOutputFormat StreamSequenceRecordReader. - (Amareshwari Sri Ramadasu via ddas) - - HADOOP-2819. The following methods in JobConf are removed: - getInputKeyClass() setInputKeyClass getInputValueClass() - setInputValueClass(Class theClass) setSpeculativeExecution - getSpeculativeExecution() (Amareshwari Sri Ramadasu via ddas) - - HADOOP-2817. Removes deprecated mapred.tasktracker.tasks.maximum and - ClusterStatus.getMaxTasks(). (Amareshwari Sri Ramadasu via ddas) - - HADOOP-2821. Removes deprecated ShellUtil and ToolBase classes from - the util package. (Amareshwari Sri Ramadasu via ddas) - - HADOOP-2934. The namenode was encountreing a NPE while loading - leases from the fsimage. Fixed. (dhruba) - - HADOOP-2938. Some fs commands did not glob paths. - (Tsz Wo (Nicholas), SZE via rangadi) - - HADOOP-2943. Compression of intermediate map output causes failures - in the merge. (cdouglas) - - HADOOP-2870. DataNode and NameNode closes all connections while - shutting down. (Hairong Kuang via dhruba) - - HADOOP-2973. Fix TestLocalDFS for Windows platform. - (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-2971. select multiple times if it returns early in - SocketIOWithTimeout. (rangadi) - - HADOOP-2955. Fix TestCrcCorruption test failures caused by HADOOP-2758 - (rangadi) - - HADOOP-2657. A flush call on the DFSOutputStream flushes the last - partial CRC chunk too. (dhruba) - - HADOOP-2974. IPC unit tests used "0.0.0.0" to connect to server, which - is not always supported. (rangadi) - - HADOOP-2996. Fixes uses of StringBuffer in StreamUtils class. - (Dave Brosius via ddas) - - HADOOP-2995. Fixes StreamBaseRecordReader's getProgress to return a - floating point number. (Dave Brosius via ddas) - - HADOOP-2972. Fix for a NPE in FSDataset.invalidate. - (Mahadev Konar via dhruba) - - HADOOP-2994. Code cleanup for DFSClient: remove redundant - conversions from string to string. (Dave Brosius via dhruba) - - HADOOP-3009. TestFileCreation sometimes fails because restarting - minidfscluster sometimes creates datanodes with ports that are - different from their original instance. (dhruba) - - HADOOP-2992. Distributed Upgrade framework works correctly with - more than one upgrade object. (Konstantin Shvachko via dhruba) - - HADOOP-2679. Fix a typo in libhdfs. (Jason via dhruba) - - HADOOP-2976. When a lease expires, the Namenode ensures that - blocks of the file are adequately replicated. (dhruba) - - HADOOP-2901. Fixes the creation of info servers in the JobClient - and JobTracker. Removes the creation from JobClient and removes - additional info server from the JobTracker. Also adds the command - line utility to view the history files (HADOOP-2896), and fixes - bugs in JSPs to do with analysis - HADOOP-2742, HADOOP-2792. - (Amareshwari Sri Ramadasu via ddas) - - HADOOP-2890. If different datanodes report the same block but - with different sizes to the namenode, the namenode picks the - replica(s) with the largest size as the only valid replica(s). (dhruba) - - HADOOP-2825. Deprecated MapOutputLocation.getFile() is removed. - (Amareshwari Sri Ramadasu via ddas) - - HADOOP-2806. Fixes a streaming document. - (Amareshwari Sriramadasu via ddas) - - HADOOP-3008. SocketIOWithTimeout throws InterruptedIOException if the - thread is interrupted while it is waiting. (rangadi) - - HADOOP-3006. Fix wrong packet size reported by DataNode when a block - is being replicated. (rangadi) - - HADOOP-3029. Datanode prints log message "firstbadlink" only if - it detects a bad connection to another datanode in the pipeline. (dhruba) - - HADOOP-3030. Release reserved space for file in InMemoryFileSystem if - checksum reservation fails. (Devaraj Das via cdouglas) - - HADOOP-3036. Fix findbugs warnings in UpgradeUtilities. (Konstantin - Shvachko via cdouglas) - - HADOOP-3025. ChecksumFileSystem supports the delete method with - the recursive flag. (Mahadev Konar via dhruba) - - HADOOP-3012. dfs -mv file to user home directory throws exception if - the user home directory does not exist. (Mahadev Konar via dhruba) - - HADOOP-3066. Should not require superuser privilege to query if hdfs is in - safe mode (jimk) - - HADOOP-3040. If the input line starts with the separator char, the key - is set as empty. (Amareshwari Sriramadasu via ddas) - - HADOOP-3080. Removes flush calls from JobHistory. - (Amareshwari Sriramadasu via ddas) - - HADOOP-3086. Adds the testcase missed during commit of hadoop-3040. - (Amareshwari Sriramadasu via ddas) - - HADOOP-3046. Fix the raw comparators for Text and BytesWritables - to use the provided length rather than recompute it. (omalley) - - HADOOP-3094. Fix BytesWritable.toString to avoid extending the sign bit - (Owen O'Malley via cdouglas) - - HADOOP-3067. DFSInputStream's position read does not close the sockets. - (rangadi) - - HADOOP-3073. close() on SocketInputStream or SocketOutputStream should - close the underlying channel. (rangadi) - - HADOOP-3087. Fixes a problem to do with refreshing of loadHistory.jsp. - (Amareshwari Sriramadasu via ddas) - - HADOOP-3065. Better logging message if the rack location of a datanode - cannot be determined. (Devaraj Das via dhruba) - - HADOOP-3064. Commas in a file path should not be treated as delimiters. - (Hairong Kuang via shv) - - HADOOP-2997. Adds test for non-writable serialier. Also fixes a problem - introduced by HADOOP-2399. (Tom White via ddas) - - HADOOP-3114. Fix TestDFSShell on Windows. (Lohit Vijaya Renu via cdouglas) - - HADOOP-3118. Fix Namenode NPE while loading fsimage after a cluster - upgrade from older disk format. (dhruba) - - HADOOP-3161. Fix FIleUtil.HardLink.getLinkCount on Mac OS. (nigel - via omalley) - - HADOOP-2927. Fix TestDU to acurately calculate the expected file size. - (shv via nigel) - - HADOOP-3123. Fix the native library build scripts to work on Solaris. - (tomwhite via omalley) - - HADOOP-3089. Streaming should accept stderr from task before - first key arrives. (Rick Cox via tomwhite) - - HADOOP-3146. A DFSOutputStream.flush method is renamed as - DFSOutputStream.fsync. (dhruba) - - HADOOP-3165. -put/-copyFromLocal did not treat input file "-" as stdin. - (Lohit Vijayarenu via rangadi) - - HADOOP-3041. Deprecate JobConf.setOutputPath and JobConf.getOutputPath. - Deprecate OutputFormatBase. Add FileOutputFormat. Existing output formats - extending OutputFormatBase, now extend FileOutputFormat. Add the following - APIs in FileOutputFormat: setOutputPath, getOutputPath, getWorkOutputPath. - (Amareshwari Sriramadasu via nigel) - - HADOOP-3083. The fsimage does not store leases. This would have to be - reworked in the next release to support appends. (dhruba) - - HADOOP-3166. Fix an ArrayIndexOutOfBoundsException in the spill thread - and make exception handling more promiscuous to catch this condition. - (cdouglas) - - HADOOP-3050. DataNode sends one and only one block report after - it registers with the namenode. (Hairong Kuang) - - HADOOP-3044. NNBench sets the right configuration for the mapper. - (Hairong Kuang) - - HADOOP-3178. Fix GridMix scripts for small and medium jobs - to handle input paths differently. (Mukund Madhugiri via nigel) - - HADOOP-1911. Fix an infinite loop in DFSClient when all replicas of a - block are bad (cdouglas) - - HADOOP-3157. Fix path handling in DistributedCache and TestMiniMRLocalFS. - (Doug Cutting via rangadi) - - HADOOP-3018. Fix the eclipse plug-in contrib wrt removed deprecated - methods (taton) - - HADOOP-3183. Fix TestJobShell to use 'ls' instead of java.io.File::exists - since cygwin symlinks are unsupported. - (Mahadev konar via cdouglas) - - HADOOP-3175. Fix FsShell.CommandFormat to handle "-" in arguments. - (Edward J. Yoon via rangadi) - - HADOOP-3220. Safemode message corrected. (shv) - - HADOOP-3208. Fix WritableDeserializer to set the Configuration on - deserialized Writables. (Enis Soztutar via cdouglas) - - HADOOP-3224. 'dfs -du /dir' does not return correct size. - (Lohit Vjayarenu via rangadi) - - HADOOP-3223. Fix typo in help message for -chmod. (rangadi) - - HADOOP-1373. checkPath() should ignore case when it compares authoriy. - (Edward J. Yoon via rangadi) - - HADOOP-3204. Fixes a problem to do with ReduceTask's LocalFSMerger not - catching Throwable. (Amar Ramesh Kamat via ddas) - - HADOOP-3229. Report progress when collecting records from the mapper and - the combiner. (Doug Cutting via cdouglas) - - HADOOP-3225. Unwrapping methods of RemoteException should initialize - detailedMassage field. (Mahadev Konar, shv, cdouglas) - - HADOOP-3247. Fix gridmix scripts to use the correct globbing syntax and - change maxentToSameCluster to run the correct number of jobs. - (Runping Qi via cdouglas) - - HADOOP-3242. Fix the RecordReader of SequenceFileAsBinaryInputFormat to - correctly read from the start of the split and not the beginning of the - file. (cdouglas via acmurthy) - - HADOOP-3256. Encodes the job name used in the filename for history files. - (Arun Murthy via ddas) - - HADOOP-3162. Ensure that comma-separated input paths are treated correctly - as multiple input paths. (Amareshwari Sri Ramadasu via acmurthy) - - HADOOP-3263. Ensure that the job-history log file always follows the - pattern of hostname_timestamp_jobid_username_jobname even if username - and/or jobname are not specfied. This helps to avoid wrong assumptions - made about the job-history log filename in jobhistory.jsp. (acmurthy) - - HADOOP-3251. Fixes getFilesystemName in JobTracker and LocalJobRunner to - use FileSystem.getUri instead of FileSystem.getName. (Arun Murthy via ddas) - - HADOOP-3237. Fixes TestDFSShell.testErrOutPut on Windows platform. - (Mahadev Konar via ddas) - - HADOOP-3279. TaskTracker checks for SUCCEEDED task status in addition to - COMMIT_PENDING status when it fails maps due to lost map. - (Devaraj Das) - - HADOOP-3286. Prevent collisions in gridmix output dirs by increasing the - granularity of the timestamp. (Runping Qi via cdouglas) - - HADOOP-3285. Fix input split locality when the splits align to - fs blocks. (omalley) - - HADOOP-3372. Fix heap management in streaming tests. (Arun Murthy via - cdouglas) - - HADOOP-3031. Fix javac warnings in test classes. (cdouglas) - - HADOOP-3382. Fix memory leak when files are not cleanly closed (rangadi) - - HADOOP-3322. Fix to push MetricsRecord for rpc metrics. (Eric Yang via - mukund) - -Release 0.16.4 - 2008-05-05 - - BUG FIXES - - HADOOP-3138. DFS mkdirs() should not throw an exception if the directory - already exists. (rangadi via mukund) - - HADOOP-3294. Fix distcp to check the destination length and retry the copy - if it doesn't match the src length. (Tsz Wo (Nicholas), SZE via mukund) - - HADOOP-3186. Fix incorrect permission checkding for mv and renameTo - in HDFS. (Tsz Wo (Nicholas), SZE via mukund) - -Release 0.16.3 - 2008-04-16 - - BUG FIXES - - HADOOP-3010. Fix ConcurrentModificationException in ipc.Server.Responder. - (rangadi) - - HADOOP-3154. Catch all Throwables from the SpillThread in MapTask, rather - than IOExceptions only. (ddas via cdouglas) - - HADOOP-3159. Avoid file system cache being overwritten whenever - configuration is modified. (Tsz Wo (Nicholas), SZE via hairong) - - HADOOP-3139. Remove the consistency check for the FileSystem cache in - closeAll() that causes spurious warnings and a deadlock. - (Tsz Wo (Nicholas), SZE via cdouglas) - - HADOOP-3195. Fix TestFileSystem to be deterministic. - (Tsz Wo (Nicholas), SZE via cdouglas) - - HADOOP-3069. Primary name-node should not truncate image when transferring - it from the secondary. (shv) - - HADOOP-3182. Change permissions of the job-submission directory to 777 - from 733 to ensure sharing of HOD clusters works correctly. (Tsz Wo - (Nicholas), Sze and Amareshwari Sri Ramadasu via acmurthy) - -Release 0.16.2 - 2008-04-02 - - BUG FIXES - - HADOOP-3011. Prohibit distcp from overwriting directories on the - destination filesystem with files. (cdouglas) - - HADOOP-3033. The BlockReceiver thread in the datanode writes data to - the block file, changes file position (if needed) and flushes all by - itself. The PacketResponder thread does not flush block file. (dhruba) - - HADOOP-2978. Fixes the JobHistory log format for counters. - (Runping Qi via ddas) - - HADOOP-2985. Fixes LocalJobRunner to tolerate null job output path. - Also makes the _temporary a constant in MRConstants.java. - (Amareshwari Sriramadasu via ddas) - - HADOOP-3003. FileSystem cache key is updated after a - FileSystem object is created. (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-3042. Updates the Javadoc in JobConf.getOutputPath to reflect - the actual temporary path. (Amareshwari Sriramadasu via ddas) - - HADOOP-3007. Tolerate mirror failures while DataNode is replicating - blocks as it used to before. (rangadi) - - HADOOP-2944. Fixes a "Run on Hadoop" wizard NPE when creating a - Location from the wizard. (taton) - - HADOOP-3049. Fixes a problem in MultiThreadedMapRunner to do with - catching RuntimeExceptions. (Alejandro Abdelnur via ddas) - - HADOOP-3039. Fixes a problem to do with exceptions in tasks not - killing jobs. (Amareshwari Sriramadasu via ddas) - - HADOOP-3027. Fixes a problem to do with adding a shutdown hook in - FileSystem. (Amareshwari Sriramadasu via ddas) - - HADOOP-3056. Fix distcp when the target is an empty directory by - making sure the directory is created first. (cdouglas and acmurthy - via omalley) - - HADOOP-3070. Protect the trash emptier thread from null pointer - exceptions. (Koji Noguchi via omalley) - - HADOOP-3084. Fix HftpFileSystem to work for zero-lenghth files. - (cdouglas) - - HADOOP-3107. Fix NPE when fsck invokes getListings. (dhruba) - - HADOOP-3104. Limit MultithreadedMapRunner to have a fixed length queue - between the RecordReader and the map threads. (Alejandro Abdelnur via - omalley) - - HADOOP-2833. Do not use "Dr. Who" as the default user in JobClient. - A valid user name is required. (Tsz Wo (Nicholas), SZE via rangadi) - - HADOOP-3128. Throw RemoteException in setPermissions and setOwner of - DistributedFileSystem. (shv via nigel) - -Release 0.16.1 - 2008-03-13 - - INCOMPATIBLE CHANGES - - HADOOP-2869. Deprecate SequenceFile.setCompressionType in favor of - SequenceFile.createWriter, SequenceFileOutputFormat.setCompressionType, - and JobConf.setMapOutputCompressionType. (Arun C Murthy via cdouglas) - Configuration changes to hadoop-default.xml: - deprecated io.seqfile.compression.type - - IMPROVEMENTS - - HADOOP-2371. User guide for file permissions in HDFS. - (Robert Chansler via rangadi) - - HADOOP-3098. Allow more characters in user and group names while - using -chown and -chgrp commands. (rangadi) - - BUG FIXES - - HADOOP-2789. Race condition in IPC Server Responder that could close - connections early. (Raghu Angadi) - - HADOOP-2785. minor. Fix a typo in Datanode block verification - (Raghu Angadi) - - HADOOP-2788. minor. Fix help message for chgrp shell command (Raghu Angadi). - - HADOOP-1188. fstime file is updated when a storage directory containing - namespace image becomes inaccessible. (shv) - - HADOOP-2787. An application can set a configuration variable named - dfs.umask to set the umask that is used by DFS. - (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-2780. The default socket buffer size for DataNodes is 128K. - (dhruba) - - HADOOP-2716. Superuser privileges for the Balancer. - (Tsz Wo (Nicholas), SZE via shv) - - HADOOP-2754. Filter out .crc files from local file system listing. - (Hairong Kuang via shv) - - HADOOP-2733. Fix compiler warnings in test code. - (Tsz Wo (Nicholas), SZE via cdouglas) - - HADOOP-2725. Modify distcp to avoid leaving partially copied files at - the destination after encountering an error. (Tsz Wo (Nicholas), SZE - via cdouglas) - - HADOOP-2391. Cleanup job output directory before declaring a job as - SUCCESSFUL. (Amareshwari Sri Ramadasu via ddas) - - HADOOP-2808. Minor fix to FileUtil::copy to mind the overwrite - formal. (cdouglas) - - HADOOP-2683. Moving UGI out of the RPC Server. - (Tsz Wo (Nicholas), SZE via shv) - - HADOOP-2814. Fix for NPE in datanode in unit test TestDataTransferProtocol. - (Raghu Angadi via dhruba) - - HADOOP-2811. Dump of counters in job history does not add comma between - groups. (runping via omalley) - - HADOOP-2735. Enables setting TMPDIR for tasks. - (Amareshwari Sri Ramadasu via ddas) - - HADOOP-2843. Fix protections on map-side join classes to enable derivation. - (cdouglas via omalley) - - HADOOP-2840. Fix gridmix scripts to correctly invoke the java sort through - the proper jar. (Mukund Madhugiri via cdouglas) - - HADOOP-2769. TestNNThroughputBnechmark should not use a fixed port for - the namenode http port. (omalley) - - HADOOP-2852. Update gridmix benchmark to avoid an artifically long tail. - (cdouglas) - - HADOOP-2894. Fix a problem to do with tasktrackers failing to connect to - JobTracker upon reinitialization. (Owen O'Malley via ddas). - - HADOOP-2903. Fix exception generated by Metrics while using pushMetric(). - (girish vaitheeswaran via dhruba) - - HADOOP-2904. Fix to RPC metrics to log the correct host name. - (girish vaitheeswaran via dhruba) - - HADOOP-2918. Improve error logging so that dfs writes failure with - "No lease on file" can be diagnosed. (dhruba) - - HADOOP-2923. Add SequenceFileAsBinaryInputFormat, which was - missed in the commit for HADOOP-2603. (cdouglas via omalley) - - HADOOP-2931. IOException thrown by DFSOutputStream had wrong stack - trace in some cases. (Michael Bieniosek via rangadi) - - HADOOP-2883. Write failures and data corruptions on HDFS files. - The write timeout is back to what it was on 0.15 release. Also, the - datnodes flushes the block file buffered output stream before - sending a positive ack for the packet back to the client. (dhruba) - - HADOOP-2756. NPE in DFSClient while closing DFSOutputStreams - under load. (rangadi) - - HADOOP-2958. Fixed FileBench which broke due to HADOOP-2391 which performs - a check for existence of the output directory and a trivial bug in - GenericMRLoadGenerator where min/max word lenghts were identical since - they were looking at the same config variables (Chris Douglas via - acmurthy) - - HADOOP-2915. Fixed FileSystem.CACHE so that a username is included - in the cache key. (Tsz Wo (Nicholas), SZE via nigel) - - HADOOP-2813. TestDU unit test uses its own directory to run its - sequence of tests. (Mahadev Konar via dhruba) - -Release 0.16.0 - 2008-02-07 - - INCOMPATIBLE CHANGES - - HADOOP-1245. Use the mapred.tasktracker.tasks.maximum value - configured on each tasktracker when allocating tasks, instead of - the value configured on the jobtracker. InterTrackerProtocol - version changed from 5 to 6. (Michael Bieniosek via omalley) - - HADOOP-1843. Removed code from Configuration and JobConf deprecated by - HADOOP-785 and a minor fix to Configuration.toString. Specifically the - important change is that mapred-default.xml is no longer supported and - Configuration no longer supports the notion of default/final resources. - (acmurthy) - - HADOOP-1302. Remove deprecated abacus code from the contrib directory. - This also fixes a configuration bug in AggregateWordCount, so that the - job now works. (enis) - - HADOOP-2288. Enhance FileSystem API to support access control. - (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-2184. RPC Support for user permissions and authentication. - (Raghu Angadi via dhruba) - - HADOOP-2185. RPC Server uses any available port if the specified - port is zero. Otherwise it uses the specified port. Also combines - the configuration attributes for the servers' bind address and - port from "x.x.x.x" and "y" to "x.x.x.x:y". - Deprecated configuration variables: - dfs.info.bindAddress - dfs.info.port - dfs.datanode.bindAddress - dfs.datanode.port - dfs.datanode.info.bindAdress - dfs.datanode.info.port - dfs.secondary.info.bindAddress - dfs.secondary.info.port - mapred.job.tracker.info.bindAddress - mapred.job.tracker.info.port - mapred.task.tracker.report.bindAddress - tasktracker.http.bindAddress - tasktracker.http.port - New configuration variables (post HADOOP-2404): - dfs.secondary.http.address - dfs.datanode.address - dfs.datanode.http.address - dfs.http.address - mapred.job.tracker.http.address - mapred.task.tracker.report.address - mapred.task.tracker.http.address - (Konstantin Shvachko via dhruba) - - HADOOP-2401. Only the current leaseholder can abandon a block for - a HDFS file. ClientProtocol version changed from 20 to 21. - (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-2381. Support permission information in FileStatus. Client - Protocol version changed from 21 to 22. (Raghu Angadi via dhruba) - - HADOOP-2110. Block report processing creates fewer transient objects. - Datanode Protocol version changed from 10 to 11. - (Sanjay Radia via dhruba) - - HADOOP-2567. Add FileSystem#getHomeDirectory(), which returns the - user's home directory in a FileSystem as a fully-qualified path. - FileSystem#getWorkingDirectory() is also changed to return a - fully-qualified path, which can break applications that attempt - to, e.g., pass LocalFileSystem#getWorkingDir().toString() directly - to java.io methods that accept file names. (cutting) - - HADOOP-2514. Change trash feature to maintain a per-user trash - directory, named ".Trash" in the user's home directory. The - "fs.trash.root" parameter is no longer used. Full source paths - are also no longer reproduced within the trash. - - HADOOP-2012. Periodic data verification on Datanodes. - (Raghu Angadi via dhruba) - - HADOOP-1707. The DFSClient does not use a local disk file to cache - writes to a HDFS file. Changed Data Transfer Version from 7 to 8. - (dhruba) - - HADOOP-2652. Fix permission issues for HftpFileSystem. This is an - incompatible change since distcp may not be able to copy files - from cluster A (compiled with this patch) to cluster B (compiled - with previous versions). (Tsz Wo (Nicholas), SZE via dhruba) - - NEW FEATURES - - HADOOP-1857. Ability to run a script when a task fails to capture stack - traces. (Amareshwari Sri Ramadasu via ddas) - - HADOOP-2299. Defination of a login interface. A simple implementation for - Unix users and groups. (Hairong Kuang via dhruba) - - HADOOP-1652. A utility to balance data among datanodes in a HDFS cluster. - (Hairong Kuang via dhruba) - - HADOOP-2085. A library to support map-side joins of consistently - partitioned and sorted data sets. (Chris Douglas via omalley) - - HADOOP-2336. Shell commands to modify file permissions. (rangadi) - - HADOOP-1298. Implement file permissions for HDFS. - (Tsz Wo (Nicholas) & taton via cutting) - - HADOOP-2447. HDFS can be configured to limit the total number of - objects (inodes and blocks) in the file system. (dhruba) - - HADOOP-2487. Added an option to get statuses for all submitted/run jobs. - This information can be used to develop tools for analysing jobs. - (Amareshwari Sri Ramadasu via acmurthy) - - HADOOP-1873. Implement user permissions for Map/Reduce framework. - (Hairong Kuang via shv) - - HADOOP-2532. Add to MapFile a getClosest method that returns the key - that comes just before if the key is not present. (stack via tomwhite) - - HADOOP-1883. Add versioning to Record I/O. (Vivek Ratan via ddas) - - HADOOP-2603. Add SeqeunceFileAsBinaryInputFormat, which reads - sequence files as BytesWritable/BytesWritable regardless of the - key and value types used to write the file. (cdouglas via omalley) - - HADOOP-2367. Add ability to profile a subset of map/reduce tasks and fetch - the result to the local filesystem of the submitting application. Also - includes a general IntegerRanges extension to Configuration for setting - positive, ranged parameters. (Owen O'Malley via cdouglas) - - IMPROVEMENTS - - HADOOP-2045. Change committer list on website to a table, so that - folks can list their organization, timezone, etc. (cutting) - - HADOOP-2058. Facilitate creating new datanodes dynamically in - MiniDFSCluster. (Hairong Kuang via dhruba) - - HADOOP-1855. fsck verifies block placement policies and reports - violations. (Konstantin Shvachko via dhruba) - - HADOOP-1604. An system administrator can finalize namenode upgrades - without running the cluster. (Konstantin Shvachko via dhruba) - - HADOOP-1839. Link-ify the Pending/Running/Complete/Killed grid in - jobdetails.jsp to help quickly narrow down and see categorized TIPs' - details via jobtasks.jsp. (Amar Kamat via acmurthy) - - HADOOP-1210. Log counters in job history. (Owen O'Malley via ddas) - - HADOOP-1912. Datanode has two new commands COPY and REPLACE. These are - needed for supporting data rebalance. (Hairong Kuang via dhruba) - - HADOOP-2086. This patch adds the ability to add dependencies to a job - (run via JobControl) after construction. (Adrian Woodhead via ddas) - - HADOOP-1185. Support changing the logging level of a server without - restarting the server. (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-2134. Remove developer-centric requirements from overview.html and - keep it end-user focussed, specifically sections related to subversion and - building Hadoop. (Jim Kellerman via acmurthy) - - HADOOP-1989. Support simulated DataNodes. This helps creating large virtual - clusters for testing purposes. (Sanjay Radia via dhruba) - - HADOOP-1274. Support different number of mappers and reducers per - TaskTracker to allow administrators to better configure and utilize - heterogenous clusters. - Configuration changes to hadoop-default.xml: - add mapred.tasktracker.map.tasks.maximum (default value of 2) - add mapred.tasktracker.reduce.tasks.maximum (default value of 2) - remove mapred.tasktracker.tasks.maximum (deprecated for 0.16.0) - (Amareshwari Sri Ramadasu via acmurthy) - - HADOOP-2104. Adds a description to the ant targets. This makes the - output of "ant -projecthelp" sensible. (Chris Douglas via ddas) - - HADOOP-2127. Added a pipes sort example to benchmark trivial pipes - application versus trivial java application. (omalley via acmurthy) - - HADOOP-2113. A new shell command "dfs -text" to view the contents of - a gziped or SequenceFile. (Chris Douglas via dhruba) - - HADOOP-2207. Add a "package" target for contrib modules that - permits each to determine what files are copied into release - builds. (stack via cutting) - - HADOOP-1984. Makes the backoff for failed fetches exponential. - Earlier, it was a random backoff from an interval. - (Amar Kamat via ddas) - - HADOOP-1327. Include website documentation for streaming. (Rob Weltman - via omalley) - - HADOOP-2000. Rewrite NNBench to measure namenode performance accurately. - It now uses the map-reduce framework for load generation. - (Mukund Madhugiri via dhruba) - - HADOOP-2248. Speeds up the framework w.r.t Counters. Also has API - updates to the Counters part. (Owen O'Malley via ddas) - - HADOOP-2326. The initial block report at Datanode startup time has - a random backoff period. (Sanjay Radia via dhruba) - - HADOOP-2432. HDFS includes the name of the file while throwing - "File does not exist" exception. (Jim Kellerman via dhruba) - - HADOOP-2457. Added a 'forrest.home' property to the 'docs' target in - build.xml. (acmurthy) - - HADOOP-2149. A new benchmark for three name-node operation: file create, - open, and block report, to evaluate the name-node performance - for optimizations or new features. (Konstantin Shvachko via shv) - - HADOOP-2466. Change FileInputFormat.computeSplitSize to a protected - non-static method to allow sub-classes to provide alternate - implementations. (Alejandro Abdelnur via acmurthy) - - HADOOP-2425. Change TextOutputFormat to handle Text specifically for better - performance. Make NullWritable implement Comparable. Make TextOutputFormat - treat NullWritable like null. (omalley) - - HADOOP-1719. Improves the utilization of shuffle copier threads. - (Amar Kamat via ddas) - - HADOOP-2390. Added documentation for user-controls for intermediate - map-outputs & final job-outputs and native-hadoop libraries. (acmurthy) - - HADOOP-1660. Add the cwd of the map/reduce task to the java.library.path - of the child-jvm to support loading of native libraries distributed via - the DistributedCache. (acmurthy) - - HADOOP-2285. Speeds up TextInputFormat. Also includes updates to the - Text API. (Owen O'Malley via cdouglas) - - HADOOP-2233. Adds a generic load generator for modeling MR jobs. (cdouglas) - - HADOOP-2369. Adds a set of scripts for simulating a mix of user map/reduce - workloads. (Runping Qi via cdouglas) - - HADOOP-2547. Removes use of a 'magic number' in build.xml. - (Hrishikesh via nigel) - - HADOOP-2268. Fix org.apache.hadoop.mapred.jobcontrol classes to use the - List/Map interfaces rather than concrete ArrayList/HashMap classes - internally. (Adrian Woodhead via acmurthy) - - HADOOP-2406. Add a benchmark for measuring read/write performance through - the InputFormat interface, particularly with compression. (cdouglas) - - HADOOP-2131. Allow finer-grained control over speculative-execution. Now - users can set it for maps and reduces independently. - Configuration changes to hadoop-default.xml: - deprecated mapred.speculative.execution - add mapred.map.tasks.speculative.execution - add mapred.reduce.tasks.speculative.execution - (Amareshwari Sri Ramadasu via acmurthy) - - HADOOP-1965. Interleave sort/spill in teh map-task along with calls to the - Mapper.map method. This is done by splitting the 'io.sort.mb' buffer into - two and using one half for collecting map-outputs and the other half for - sort/spill. (Amar Kamat via acmurthy) - - HADOOP-2464. Unit tests for chmod, chown, and chgrp using DFS. - (Raghu Angadi) - - HADOOP-1876. Persist statuses of completed jobs in HDFS so that the - JobClient can query and get information about decommissioned jobs and also - across JobTracker restarts. - Configuration changes to hadoop-default.xml: - add mapred.job.tracker.persist.jobstatus.active (default value of false) - add mapred.job.tracker.persist.jobstatus.hours (default value of 0) - add mapred.job.tracker.persist.jobstatus.dir (default value of - /jobtracker/jobsInfo) - (Alejandro Abdelnur via acmurthy) - - HADOOP-2077. Added version and build information to STARTUP_MSG for all - hadoop daemons to aid error-reporting, debugging etc. (acmurthy) - - HADOOP-2398. Additional instrumentation for NameNode and RPC server. - Add support for accessing instrumentation statistics via JMX. - (Sanjay radia via dhruba) - - HADOOP-2449. A return of the non-MR version of NNBench. - (Sanjay Radia via shv) - - HADOOP-1989. Remove 'datanodecluster' command from bin/hadoop. - (Sanjay Radia via shv) - - HADOOP-1742. Improve JavaDoc documentation for ClientProtocol, DFSClient, - and FSNamesystem. (Konstantin Shvachko) - - HADOOP-2298. Add Ant target for a binary-only distribution. - (Hrishikesh via nigel) - - HADOOP-2509. Add Ant target for Rat report (Apache license header - reports). (Hrishikesh via nigel) - - HADOOP-2469. WritableUtils.clone should take a Configuration - instead of a JobConf. (stack via omalley) - - HADOOP-2659. Introduce superuser permissions for admin operations. - (Tsz Wo (Nicholas), SZE via shv) - - HADOOP-2596. Added a SequenceFile.createWriter api which allows the user - to specify the blocksize, replication factor and the buffersize to be - used for the underlying HDFS file. (Alejandro Abdelnur via acmurthy) - - HADOOP-2431. Test HDFS File Permissions. (Hairong Kuang via shv) - - HADOOP-2232. Add an option to disable Nagle's algorithm in the IPC stack. - (Clint Morgan via cdouglas) - - HADOOP-2342. Created a micro-benchmark for measuring - local-file versus hdfs reads. (Owen O'Malley via nigel) - - HADOOP-2529. First version of HDFS User Guide. (Raghu Angadi) - - HADOOP-2690. Add jar-test target to build.xml, separating compilation - and packaging of the test classes. (Enis Soztutar via cdouglas) - - OPTIMIZATIONS - - HADOOP-1898. Release the lock protecting the last time of the last stack - dump while the dump is happening. (Amareshwari Sri Ramadasu via omalley) - - HADOOP-1900. Makes the heartbeat and task event queries interval - dependent on the cluster size. (Amareshwari Sri Ramadasu via ddas) - - HADOOP-2208. Counter update frequency (from TaskTracker to JobTracker) is - capped at 1 minute. (Amareshwari Sri Ramadasu via ddas) - - HADOOP-2284. Reduce the number of progress updates during the sorting in - the map task. (Amar Kamat via ddas) - - BUG FIXES - - HADOOP-2583. Fixes a bug in the Eclipse plug-in UI to edit locations. - Plug-in version is now synchronized with Hadoop version. - - HADOOP-2100. Remove faulty check for existence of $HADOOP_PID_DIR and let - 'mkdir -p' check & create it. (Michael Bieniosek via acmurthy) - - HADOOP-1642. Ensure jobids generated by LocalJobRunner are unique to - avoid collissions and hence job-failures. (Doug Cutting via acmurthy) - - HADOOP-2096. Close open file-descriptors held by streams while localizing - job.xml in the JobTracker and while displaying it on the webui in - jobconf.jsp. (Amar Kamat via acmurthy) - - HADOOP-2098. Log start & completion of empty jobs to JobHistory, which - also ensures that we close the file-descriptor of the job's history log - opened during job-submission. (Amar Kamat via acmurthy) - - HADOOP-2112. Adding back changes to build.xml lost while reverting - HADOOP-1622 i.e. http://svn.apache.org/viewvc?view=rev&revision=588771. - (acmurthy) - - HADOOP-2089. Fixes the command line argument handling to handle multiple - -cacheArchive in Hadoop streaming. (Lohit Vijayarenu via ddas) - - HADOOP-2071. Fix StreamXmlRecordReader to use a BufferedInputStream - wrapped over the DFSInputStream since mark/reset aren't supported by - DFSInputStream anymore. (Lohit Vijayarenu via acmurthy) - - HADOOP-1348. Allow XML comments inside configuration files. - (Rajagopal Natarajan and Enis Soztutar via enis) - - HADOOP-1952. Improve handling of invalid, user-specified classes while - configuring streaming jobs such as combiner, input/output formats etc. - Now invalid options are caught, logged and jobs are failed early. (Lohit - Vijayarenu via acmurthy) - - HADOOP-2151. FileSystem.globPaths validates the list of Paths that - it returns. (Lohit Vijayarenu via dhruba) - - HADOOP-2121. Cleanup DFSOutputStream when the stream encountered errors - when Datanodes became full. (Raghu Angadi via dhruba) - - HADOOP-1130. The FileSystem.closeAll() method closes all existing - DFSClients. (Chris Douglas via dhruba) - - HADOOP-2204. DFSTestUtil.waitReplication was not waiting for all replicas - to get created, thus causing unit test failure. - (Raghu Angadi via dhruba) - - HADOOP-2078. An zero size file may have no blocks associated with it. - (Konstantin Shvachko via dhruba) - - HADOOP-2212. ChecksumFileSystem.getSumBufferSize might throw - java.lang.ArithmeticException. The fix is to initialize bytesPerChecksum - to 0. (Michael Bieniosek via ddas) - - HADOOP-2216. Fix jobtasks.jsp to ensure that it first collects the - taskids which satisfy the filtering criteria and then use that list to - print out only the required task-reports, previously it was oblivious to - the filtering and hence used the wrong index into the array of task-reports. - (Amar Kamat via acmurthy) - - HADOOP-2272. Fix findbugs target to reflect changes made to the location - of the streaming jar file by HADOOP-2207. (Adrian Woodhead via nigel) - - HADOOP-2244. Fixes the MapWritable.readFields to clear the instance - field variable every time readFields is called. (Michael Stack via ddas). - - HADOOP-2245. Fixes LocalJobRunner to include a jobId in the mapId. Also, - adds a testcase for JobControl. (Adrian Woodhead via ddas). - - HADOOP-2275. Fix erroneous detection of corrupted file when namenode - fails to allocate any datanodes for newly allocated block. - (Dhruba Borthakur via dhruba) - - HADOOP-2256. Fix a buf in the namenode that could cause it to encounter - an infinite loop while deleting excess replicas that were created by - block rebalancing. (Hairong Kuang via dhruba) - - HADOOP-2209. SecondaryNamenode process exits if it encounters exceptions - that it cannot handle. (Dhruba Borthakur via dhruba) - - HADOOP-2314. Prevent TestBlockReplacement from occasionally getting - into an infinite loop. (Hairong Kuang via dhruba) - - HADOOP-2300. This fixes a bug where mapred.tasktracker.tasks.maximum - would be ignored even if it was set in hadoop-site.xml. - (Amareshwari Sri Ramadasu via ddas) - - HADOOP-2349. Improve code layout in file system transaction logging code. - (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-2368. Fix unit tests on Windows. - (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-2363. This fix allows running multiple instances of the unit test - in parallel. The bug was introduced in HADOOP-2185 that changed - port-rolling behaviour. (Konstantin Shvachko via dhruba) - - HADOOP-2271. Fix chmod task to be non-parallel. (Adrian Woodhead via - omalley) - - HADOOP-2313. Fail the build if building libhdfs fails. (nigel via omalley) - - HADOOP-2359. Remove warning for interruptted exception when closing down - minidfs. (dhruba via omalley) - - HADOOP-1841. Prevent slow clients from consuming threads in the NameNode. - (dhruba) - - HADOOP-2323. JobTracker.close() should not print stack traces for - normal exit. (jimk via cutting) - - HADOOP-2376. Prevents sort example from overriding the number of maps. - (Owen O'Malley via ddas) - - HADOOP-2434. FSDatasetInterface read interface causes HDFS reads to occur - in 1 byte chunks, causing performance degradation. - (Raghu Angadi via dhruba) - - HADOOP-2459. Fix package target so that src/docs/build files are not - included in the release. (nigel) - - HADOOP-2215. Fix documentation in cluster_setup.html & - mapred_tutorial.html reflect that mapred.tasktracker.tasks.maximum has - been superceeded by mapred.tasktracker.{map|reduce}.tasks.maximum. - (Amareshwari Sri Ramadasu via acmurthy) - - HADOOP-2459. Fix package target so that src/docs/build files are not - included in the release. (nigel) - - HADOOP-2352. Remove AC_CHECK_LIB for libz and liblzo to ensure that - libhadoop.so doesn't have a dependency on them. (acmurthy) - - HADOOP-2453. Fix the configuration for wordcount-simple example in Hadoop - Pipes which currently produces an XML parsing error. (Amareshwari Sri - Ramadasu via acmurthy) - - HADOOP-2476. Unit test failure while reading permission bits of local - file system (on Windows) fixed. (Raghu Angadi via dhruba) - - HADOOP-2247. Fine-tune the strategies for killing mappers and reducers - due to failures while fetching map-outputs. Now the map-completion times - and number of currently running reduces are taken into account by the - JobTracker before killing the mappers, while the progress made by the - reducer and the number of fetch-failures vis-a-vis total number of - fetch-attempts are taken into account before teh reducer kills itself. - (Amar Kamat via acmurthy) - - HADOOP-2452. Fix eclipse plug-in build.xml to refers to the right - location where hadoop-*-core.jar is generated. (taton) - - HADOOP-2492. Additional debugging in the rpc server to better - diagnose ConcurrentModificationException. (dhruba) - - HADOOP-2344. Enhance the utility for executing shell commands to read the - stdout/stderr streams while waiting for the command to finish (to free up - the buffers). Also, this patch throws away stderr of the DF utility. - @deprecated - org.apache.hadoop.fs.ShellCommand for org.apache.hadoop.util.Shell - org.apache.hadoop.util.ShellUtil for - org.apache.hadoop.util.Shell.ShellCommandExecutor - (Amar Kamat via acmurthy) - - HADOOP-2511. Fix a javadoc warning in org.apache.hadoop.util.Shell - introduced by HADOOP-2344. (acmurthy) - - HADOOP-2442. Fix TestLocalFileSystemPermission.testLocalFSsetOwner - to work on more platforms. (Raghu Angadi via nigel) - - HADOOP-2488. Fix a regression in random read performance. - (Michael Stack via rangadi) - - HADOOP-2523. Fix TestDFSShell.testFilePermissions on Windows. - (Raghu Angadi via nigel) - - HADOOP-2535. Removed support for deprecated mapred.child.heap.size and - fixed some indentation issues in TaskRunner. (acmurthy) - Configuration changes to hadoop-default.xml: - remove mapred.child.heap.size - - HADOOP-2512. Fix error stream handling in Shell. Use exit code to - detect shell command errors in RawLocalFileSystem. (Raghu Angadi) - - HADOOP-2446. Fixes TestHDFSServerPorts and TestMRServerPorts so they - do not rely on statically configured ports and cleanup better. (nigel) - - HADOOP-2537. Make build process compatible with Ant 1.7.0. - (Hrishikesh via nigel) - - HADOOP-1281. Ensure running tasks of completed map TIPs (e.g. speculative - tasks) are killed as soon as the TIP completed. (acmurthy) - - HADOOP-2571. Suppress a suprious warning in test code. (cdouglas) - - HADOOP-2481. NNBench report its progress periodically. - (Hairong Kuang via dhruba) - - HADOOP-2601. Start name-node on a free port for TestNNThroughputBenchmark. - (Konstantin Shvachko) - - HADOOP-2494. Set +x on contrib/*/bin/* in packaged tar bundle. - (stack via tomwhite) - - HADOOP-2605. Remove bogus leading slash in task-tracker report bindAddress. - (Konstantin Shvachko) - - HADOOP-2620. Trivial. 'bin/hadoop fs -help' did not list chmod, chown, and - chgrp. (Raghu Angadi) - - HADOOP-2614. The DFS WebUI accesses are configured to be from the user - specified by dfs.web.ugi. (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-2543. Implement a "no-permission-checking" mode for smooth - upgrade from a pre-0.16 install of HDFS. - (Hairong Kuang via dhruba) - - HADOOP-290. A DataNode log message now prints the target of a replication - request correctly. (dhruba) - - HADOOP-2538. Redirect to a warning, if plaintext parameter is true but - the filter parameter is not given in TaskLogServlet. - (Michael Bieniosek via enis) - - HADOOP-2582. Prevent 'bin/hadoop fs -copyToLocal' from creating - zero-length files when the src does not exist. - (Lohit Vijayarenu via cdouglas) - - HADOOP-2189. Incrementing user counters should count as progress. (ddas) - - HADOOP-2649. The NameNode periodically computes replication work for - the datanodes. The periodicity of this computation is now configurable. - (dhruba) - - HADOOP-2549. Correct disk size computation so that data-nodes could switch - to other local drives if current is full. (Hairong Kuang via shv) - - HADOOP-2633. Fsck should call name-node methods directly rather than - through rpc. (Tsz Wo (Nicholas), SZE via shv) - - HADOOP-2687. Modify a few log message generated by dfs client to be - logged only at INFO level. (stack via dhruba) - - HADOOP-2402. Fix BlockCompressorStream to ensure it buffers data before - sending it down to the compressor so that each write call doesn't - compress. (Chris Douglas via acmurthy) - - HADOOP-2645. The Metrics initialization code does not throw - exceptions when servers are restarted by MiniDFSCluster. - (Sanjay Radia via dhruba) - - HADOOP-2691. Fix a race condition that was causing the DFSClient - to erroneously remove a good datanode from a pipeline that actually - had another datanode that was bad. (dhruba) - - HADOOP-1195. All code in FSNamesystem checks the return value - of getDataNode for null before using it. (dhruba) - - HADOOP-2640. Fix a bug in MultiFileSplitInputFormat that was always - returning 1 split in some circumstances. (Enis Soztutar via nigel) - - HADOOP-2626. Fix paths with special characters to work correctly - with the local filesystem. (Thomas Friol via cutting) - - HADOOP-2646. Fix SortValidator to work with fully-qualified - working directories. (Arun C Murthy via nigel) - - HADOOP-2092. Added a ping mechanism to the pipes' task to periodically - check if the parent Java task is running, and exit if the parent isn't - alive and responding. (Amareshwari Sri Ramadasu via acmurthy) - - HADOOP-2714. TestDecommission failed on windows because the replication - request was timing out. (dhruba) - - HADOOP-2576. Namenode performance degradation over time triggered by - large heartbeat interval. (Raghu Angadi) - - HADOOP-2713. TestDatanodeDeath failed on windows because the replication - request was timing out. (dhruba) - - HADOOP-2639. Fixes a problem to do with incorrect maintenance of values - for runningMapTasks/runningReduceTasks. (Amar Kamat and Arun Murthy - via ddas) - - HADOOP-2723. Fixed the check for checking whether to do user task - profiling. (Amareshwari Sri Ramadasu via omalley) - - HADOOP-2734. Link forrest docs to new http://hadoop.apache.org - (Doug Cutting via nigel) - - HADOOP-2641. Added Apache license headers to 95 files. (nigel) - - HADOOP-2732. Fix bug in path globbing. (Hairong Kuang via nigel) - - HADOOP-2404. Fix backwards compatability with hadoop-0.15 configuration - files that was broken by HADOOP-2185. (omalley) - - HADOOP-2755. Fix fsck performance degradation because of permissions - issue. (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-2768. Fix performance regression caused by HADOOP-1707. - (dhruba borthakur via nigel) - - HADOOP-3108. Fix NPE in setPermission and setOwner. (shv) - -Release 0.15.3 - 2008-01-18 - - BUG FIXES - - HADOOP-2562. globPaths supports {ab,cd}. (Hairong Kuang via dhruba) - - HADOOP-2540. fsck reports missing blocks incorrectly. (dhruba) - - HADOOP-2570. "work" directory created unconditionally, and symlinks - created from the task cwds. - - HADOOP-2574. Fixed mapred_tutorial.xml to correct minor errors with the - WordCount examples. (acmurthy) - -Release 0.15.2 - 2008-01-02 - - BUG FIXES - - HADOOP-2246. Moved the changelog for HADOOP-1851 from the NEW FEATURES - section to the INCOMPATIBLE CHANGES section. (acmurthy) - - HADOOP-2238. Fix TaskGraphServlet so that it sets the content type of - the response appropriately. (Paul Saab via enis) - - HADOOP-2129. Fix so that distcp works correctly when source is - HDFS but not the default filesystem. HDFS paths returned by the - listStatus() method are now fully-qualified. (cutting) - - HADOOP-2378. Fixes a problem where the last task completion event would - get created after the job completes. (Alejandro Abdelnur via ddas) - - HADOOP-2228. Checks whether a job with a certain jobId is already running - and then tries to create the JobInProgress object. - (Johan Oskarsson via ddas) - - HADOOP-2422. dfs -cat multiple files fail with 'Unable to write to - output stream'. (Raghu Angadi via dhruba) - - HADOOP-2460. When the namenode encounters ioerrors on writing a - transaction log, it stops writing new transactions to that one. - (Raghu Angadi via dhruba) - - HADOOP-2227. Use the LocalDirAllocator uniformly for handling all of the - temporary storage required for a given task. It also implies that - mapred.local.dir.minspacestart is handled by checking if there is enough - free-space on any one of the available disks. (Amareshwari Sri Ramadasu - via acmurthy) - - HADOOP-2437. Fix the LocalDirAllocator to choose the seed for the - round-robin disk selections randomly. This helps in spreading data across - multiple partitions much better. (acmurhty) - - HADOOP-2486. When the list of files from the InMemoryFileSystem is obtained - for merging, this patch will ensure that only those files whose checksums - have also got created (renamed) are returned. (ddas) - - HADOOP-2456. Hardcode English locale to prevent NumberFormatException - from occurring when starting the NameNode with certain locales. - (Matthias Friedrich via nigel) - - IMPROVEMENTS - - HADOOP-2160. Remove project-level, non-user documentation from - releases, since it's now maintained in a separate tree. (cutting) - - HADOOP-1327. Add user documentation for streaming. (cutting) - - HADOOP-2382. Add hadoop-default.html to subversion. (cutting) - - HADOOP-2158. hdfsListDirectory calls FileSystem.listStatus instead - of FileSystem.listPaths. This reduces the number of RPC calls on the - namenode, thereby improving scalability. (Christian Kunz via dhruba) - -Release 0.15.1 - 2007-11-27 - - INCOMPATIBLE CHANGES - - HADOOP-713. Reduce CPU usage on namenode while listing directories. - FileSystem.listPaths does not return the size of the entire subtree. - Introduced a new API ClientProtocol.getContentLength that returns the - size of the subtree. (Dhruba Borthakur via dhruba) - - IMPROVEMENTS - - HADOOP-1917. Addition of guides/tutorial for better overall - documentation for Hadoop. Specifically: - * quickstart.html is targetted towards first-time users and helps them - setup a single-node cluster and play with Hadoop. - * cluster_setup.html helps admins to configure and setup non-trivial - hadoop clusters. - * mapred_tutorial.html is a comprehensive Map-Reduce tutorial. - (acmurthy) - - BUG FIXES - - HADOOP-2174. Removed the unnecessary Reporter.setStatus call from - FSCopyFilesMapper.close which led to a NPE since the reporter isn't valid - in the close method. (Chris Douglas via acmurthy) - - HADOOP-2172. Restore performance of random access to local files - by caching positions of local input streams, avoiding a system - call. (cutting) - - HADOOP-2205. Regenerate the Hadoop website since some of the changes made - by HADOOP-1917 weren't correctly copied over to the trunk/docs directory. - Also fixed a couple of minor typos and broken links. (acmurthy) - -Release 0.15.0 - 2007-11-2 - - INCOMPATIBLE CHANGES - - HADOOP-1708. Make files appear in namespace as soon as they are - created. (Dhruba Borthakur via dhruba) - - HADOOP-999. A HDFS Client immediately informs the NameNode of a new - file creation. ClientProtocol version changed from 14 to 15. - (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-932. File locking interfaces and implementations (that were - earlier deprecated) are removed. Client Protocol version changed - from 15 to 16. (Raghu Angadi via dhruba) - - HADOOP-1621. FileStatus is now a concrete class and FileSystem.listPaths - is deprecated and replaced with listStatus. (Chris Douglas via omalley) - - HADOOP-1656. The blockSize of a file is stored persistently in the file - inode. (Dhruba Borthakur via dhruba) - - HADOOP-1838. The blocksize of files created with an earlier release is - set to the default block size. (Dhruba Borthakur via dhruba) - - HADOOP-785. Add support for 'final' Configuration parameters, - removing support for 'mapred-default.xml', and changing - 'hadoop-site.xml' to not override other files. Now folks should - generally use 'hadoop-site.xml' for all configurations. Values - with a 'final' tag may not be overridden by subsequently loaded - configuration files, e.g., by jobs. (Arun C. Murthy via cutting) - - HADOOP-1846. DatanodeReport in ClientProtocol can report live - datanodes, dead datanodes or all datanodes. Client Protocol version - changed from 17 to 18. (Hairong Kuang via dhruba) - - HADOOP-1851. Permit specification of map output compression type - and codec, independent of the final output's compression - parameters. (Arun C Murthy via cutting) - - HADOOP-1819. Jobtracker cleanups, including binding ports before - clearing state directories, so that inadvertently starting a - second jobtracker doesn't trash one that's already running. Removed - method JobTracker.getTracker() because the static variable, which - stored the value caused initialization problems. - (omalley via cutting) - - NEW FEATURES - - HADOOP-89. A client can access file data even before the creator - has closed the file. Introduce a new command "tail" from dfs shell. - (Dhruba Borthakur via dhruba) - - HADOOP-1636. Allow configuration of the number of jobs kept in - memory by the JobTracker. (Michael Bieniosek via omalley) - - HADOOP-1667. Reorganize CHANGES.txt into sections to make it - easier to read. Also remove numbering, to make merging easier. - (cutting) - - HADOOP-1610. Add metrics for failed tasks. - (Devaraj Das via tomwhite) - - HADOOP-1767. Add "bin/hadoop job -list" sub-command. (taton via cutting) - - HADOOP-1351. Add "bin/hadoop job [-fail-task|-kill-task]" sub-commands - to terminate a particular task-attempt. (Enis Soztutar via acmurthy) - - HADOOP-1880. SleepJob : An example job that sleeps at each map and - reduce task. (enis) - - HADOOP-1809. Add a link in web site to #hadoop IRC channel. (enis) - - HADOOP-1894. Add percentage graphs and mapred task completion graphs - to Web User Interface. Users not using Firefox may install a plugin to - their browsers to see svg graphics. (enis) - - HADOOP-1914. Introduce a new NamenodeProtocol to allow secondary - namenodes and rebalancing processes to communicate with a primary - namenode. (Hairong Kuang via dhruba) - - HADOOP-1963. Add a FileSystem implementation for the Kosmos - Filesystem (KFS). (Sriram Rao via cutting) - - HADOOP-1822. Allow the specialization and configuration of socket - factories. Provide a StandardSocketFactory, and a SocksSocketFactory to - allow the use of SOCKS proxies. (taton). - - HADOOP-1968. FileSystem supports wildcard input syntax "{ }". - (Hairong Kuang via dhruba) - - HADOOP-2566. Add globStatus method to the FileSystem interface - and deprecate globPath and listPath. (Hairong Kuang via hairong) - - OPTIMIZATIONS - - HADOOP-1910. Reduce the number of RPCs that DistributedFileSystem.create() - makes to the namenode. (Raghu Angadi via dhruba) - - HADOOP-1565. Reduce memory usage of NameNode by replacing - TreeMap in HDFS Namespace with ArrayList. - (Dhruba Borthakur via dhruba) - - HADOOP-1743. Change DFS INode from a nested class to standalone - class, with specialized subclasses for directories and files, to - save memory on the namenode. (Konstantin Shvachko via cutting) - - HADOOP-1759. Change file name in INode from String to byte[], - saving memory on the namenode. (Konstantin Shvachko via cutting) - - HADOOP-1766. Save memory in namenode by having BlockInfo extend - Block, and replace many uses of Block with BlockInfo. - (Konstantin Shvachko via cutting) - - HADOOP-1687. Save memory in namenode by optimizing BlockMap - representation. (Konstantin Shvachko via cutting) - - HADOOP-1774. Remove use of INode.parent in Block CRC upgrade. - (Raghu Angadi via dhruba) - - HADOOP-1788. Increase the buffer size on the Pipes command socket. - (Amareshwari Sri Ramadasu and Christian Kunz via omalley) - - BUG FIXES - - HADOOP-1946. The Datanode code does not need to invoke du on - every heartbeat. (Hairong Kuang via dhruba) - - HADOOP-1935. Fix a NullPointerException in internalReleaseCreate. - (Dhruba Borthakur) - - HADOOP-1933. The nodes listed in include and exclude files - are always listed in the datanode report. - (Raghu Angadi via dhruba) - - HADOOP-1953. The job tracker should wait beteween calls to try and delete - the system directory (Owen O'Malley via devaraj) - - HADOOP-1932. TestFileCreation fails with message saying filestatus.dat - is of incorrect size. (Dhruba Borthakur via dhruba) - - HADOOP-1573. Support for 0 reducers in PIPES. - (Owen O'Malley via devaraj) - - HADOOP-1500. Fix typographical errors in the DFS WebUI. - (Nigel Daley via dhruba) - - HADOOP-1076. Periodic checkpoint can continue even if an earlier - checkpoint encountered an error. (Dhruba Borthakur via dhruba) - - HADOOP-1887. The Namenode encounters an ArrayIndexOutOfBoundsException - while listing a directory that had a file that was - being actively written to. (Dhruba Borthakur via dhruba) - - HADOOP-1904. The Namenode encounters an exception because the - list of blocks per datanode-descriptor was corrupted. - (Konstantin Shvachko via dhruba) - - HADOOP-1762. The Namenode fsimage does not contain a list of - Datanodes. (Raghu Angadi via dhruba) - - HADOOP-1890. Removed debugging prints introduced by HADOOP-1774. - (Raghu Angadi via dhruba) - - HADOOP-1763. Too many lost task trackers on large clusters due to - insufficient number of RPC handler threads on the JobTracker. - (Devaraj Das) - - HADOOP-1463. HDFS report correct usage statistics for disk space - used by HDFS. (Hairong Kuang via dhruba) - - HADOOP-1692. In DFS ant task, don't cache the Configuration. - (Chris Douglas via cutting) - - HADOOP-1726. Remove lib/jetty-ext/ant.jar. (omalley) - - HADOOP-1772. Fix hadoop-daemon.sh script to get correct hostname - under Cygwin. (Tsz Wo (Nicholas), SZE via cutting) - - HADOOP-1749. Change TestDFSUpgrade to sort files, fixing sporadic - test failures. (Enis Soztutar via cutting) - - HADOOP-1748. Fix tasktracker to be able to launch tasks when log - directory is relative. (omalley via cutting) - - HADOOP-1775. Fix a NullPointerException and an - IllegalArgumentException in MapWritable. - (Jim Kellerman via cutting) - - HADOOP-1795. Fix so that jobs can generate output file names with - special characters. (Fr??d??ric Bertin via cutting) - - HADOOP-1810. Fix incorrect value type in MRBench (SmallJobs) - (Devaraj Das via tomwhite) - - HADOOP-1806. Fix ant task to compile again, also fix default - builds to compile ant tasks. (Chris Douglas via cutting) - - HADOOP-1758. Fix escape processing in librecordio to not be - quadratic. (Vivek Ratan via cutting) - - HADOOP-1817. Fix MultiFileSplit to read and write the split - length, so that it is not always zero in map tasks. - (Thomas Friol via cutting) - - HADOOP-1853. Fix contrib/streaming to accept multiple -cacheFile - options. (Prachi Gupta via cutting) - - HADOOP-1818. Fix MultiFileInputFormat so that it does not return - empty splits when numPaths < numSplits. (Thomas Friol via enis) - - HADOOP-1840. Fix race condition which leads to task's diagnostic - messages getting lost. (acmurthy) - - HADOOP-1885. Fix race condition in MiniDFSCluster shutdown. - (Chris Douglas via nigel) - - HADOOP-1889. Fix path in EC2 scripts for building your own AMI. - (tomwhite) - - HADOOP-1892. Fix a NullPointerException in the JobTracker when - trying to fetch a task's diagnostic messages from the JobClient. - (Amar Kamat via acmurthy) - - HADOOP-1897. Completely remove about.html page from the web site. - (enis) - - HADOOP-1907. Fix null pointer exception when getting task diagnostics - in JobClient. (Christian Kunz via omalley) - - HADOOP-1882. Remove spurious asterisks from decimal number displays. - (Raghu Angadi via cutting) - - HADOOP-1783. Make S3 FileSystem return Paths fully-qualified with - scheme and host. (tomwhite) - - HADOOP-1925. Make pipes' autoconf script look for libsocket and libnsl, so - that it can compile under Solaris. (omalley) - - HADOOP-1940. TestDFSUpgradeFromImage must shut down its MiniDFSCluster. - (Chris Douglas via nigel) - - HADOOP-1930. Fix the blame for failed fetchs on the right host. (Arun C. - Murthy via omalley) - - HADOOP-1934. Fix the platform name on Mac to use underscores rather than - spaces. (omalley) - - HADOOP-1959. Use "/" instead of File.separator in the StatusHttpServer. - (jimk via omalley) - - HADOOP-1626. Improve dfsadmin help messages. - (Lohit Vijayarenu via dhruba) - - HADOOP-1695. The SecondaryNamenode waits for the Primary NameNode to - start up. (Dhruba Borthakur) - - HADOOP-1983. Have Pipes flush the command socket when progress is sent - to prevent timeouts during long computations. (omalley) - - HADOOP-1875. Non-existant directories or read-only directories are - filtered from dfs.client.buffer.dir. (Hairong Kuang via dhruba) - - HADOOP-1992. Fix the performance degradation in the sort validator. - (acmurthy via omalley) - - HADOOP-1874. Move task-outputs' promotion/discard to a separate thread - distinct from the main heartbeat-processing thread. The main upside being - that we do not lock-up the JobTracker during HDFS operations, which - otherwise may lead to lost tasktrackers if the NameNode is unresponsive. - (Devaraj Das via acmurthy) - - HADOOP-2026. Namenode prints out one log line for "Number of transactions" - at most once every minute. (Dhruba Borthakur) - - HADOOP-2022. Ensure that status information for successful tasks is correctly - recorded at the JobTracker, so that, for example, one may view correct - information via taskdetails.jsp. This bug was introduced by HADOOP-1874. - (Amar Kamat via acmurthy) - - HADOOP-2031. Correctly maintain the taskid which takes the TIP to - completion, failing which the case of lost tasktrackers isn't handled - properly i.e. the map TIP is incorrectly left marked as 'complete' and it - is never rescheduled elsewhere, leading to hung reduces. - (Devaraj Das via acmurthy) - - HADOOP-2018. The source datanode of a data transfer waits for - a response from the target datanode before closing the data stream. - (Hairong Kuang via dhruba) - - HADOOP-2023. Disable TestLocalDirAllocator on Windows. - (Hairong Kuang via nigel) - - HADOOP-2016. Ignore status-updates from FAILED/KILLED tasks at the - TaskTracker. This fixes a race-condition which caused the tasks to wrongly - remain in the RUNNING state even after being killed by the JobTracker and - thus handicap the cleanup of the task's output sub-directory. (acmurthy) - - HADOOP-1771. Fix a NullPointerException in streaming caused by an - IOException in MROutputThread. (lohit vijayarenu via nigel) - - HADOOP-2028. Fix distcp so that the log dir does not need to be - specified and the destination does not need to exist. - (Chris Douglas via nigel) - - HADOOP-2044. The namenode protects all lease manipulations using a - sortedLease lock. (Dhruba Borthakur) - - HADOOP-2051. The TaskCommit thread should not die for exceptions other - than the InterruptedException. This behavior is there for the other long - running threads in the JobTracker. (Arun C Murthy via ddas) - - HADOOP-1973. The FileSystem object would be accessed on the JobTracker - through a RPC in the InterTrackerProtocol. The check for the object being - null was missing and hence NPE would be thrown sometimes. This issue fixes - that problem. (Amareshwari Sri Ramadasu via ddas) - - HADOOP-2033. The SequenceFile.Writer.sync method was a no-op, which caused - very uneven splits for applications like distcp that count on them. - (omalley) - - HADOOP-2070. Added a flush method to pipes' DownwardProtocol and call - that before waiting for the application to finish to ensure all buffered - data is flushed. (Owen O'Malley via acmurthy) - - HADOOP-2080. Fixed calculation of the checksum file size when the values - are large. (omalley) - - HADOOP-2048. Change error handling in distcp so that each map copies - as much as possible before reporting the error. Also report progress on - every copy. (Chris Douglas via omalley) - - HADOOP-2073. Change size of VERSION file after writing contents to it. - (Konstantin Shvachko via dhruba) - - HADOOP-2102. Fix the deprecated ToolBase to pass its Configuration object - to the superceding ToolRunner to ensure it picks up the appropriate - configuration resources. (Dennis Kubes and Enis Soztutar via acmurthy) - - HADOOP-2103. Fix minor javadoc bugs introduce by HADOOP-2046. (Nigel - Daley via acmurthy) - - IMPROVEMENTS - - HADOOP-1908. Restructure data node code so that block sending and - receiving are seperated from data transfer header handling. - (Hairong Kuang via dhruba) - - HADOOP-1921. Save the configuration of completed/failed jobs and make them - available via the web-ui. (Amar Kamat via devaraj) - - HADOOP-1266. Remove dependency of package org.apache.hadoop.net on - org.apache.hadoop.dfs. (Hairong Kuang via dhruba) - - HADOOP-1779. Replace INodeDirectory.getINode() by a getExistingPathINodes() - to allow the retrieval of all existing INodes along a given path in a - single lookup. This facilitates removal of the 'parent' field in the - inode. (Christophe Taton via dhruba) - - HADOOP-1756. Add toString() to some Writable-s. (ab) - - HADOOP-1727. New classes: MapWritable and SortedMapWritable. - (Jim Kellerman via ab) - - HADOOP-1651. Improve progress reporting. - (Devaraj Das via tomwhite) - - HADOOP-1595. dfsshell can wait for a file to achieve its intended - replication target. (Tsz Wo (Nicholas), SZE via dhruba) - - HADOOP-1693. Remove un-needed log fields in DFS replication classes, - since the log may be accessed statically. (Konstantin Shvachko via cutting) - - HADOOP-1231. Add generics to Mapper and Reducer interfaces. - (tomwhite via cutting) - - HADOOP-1436. Improved command-line APIs, so that all tools need - not subclass ToolBase, and generic parameter parser is public. - (Enis Soztutar via cutting) - - HADOOP-1703. DFS-internal code cleanups, removing several uses of - the obsolete UTF8. (Christophe Taton via cutting) - - HADOOP-1731. Add Hadoop's version to contrib jar file names. - (cutting) - - HADOOP-1689. Make shell scripts more portable. All shell scripts - now explicitly depend on bash, but do not require that bash be - installed in a particular location, as long as it is on $PATH. - (cutting) - - HADOOP-1744. Remove many uses of the deprecated UTF8 class from - the HDFS namenode. (Christophe Taton via cutting) - - HADOOP-1654. Add IOUtils class, containing generic io-related - utility methods. (Enis Soztutar via cutting) - - HADOOP-1158. Change JobTracker to record map-output transmission - errors and use them to trigger speculative re-execution of tasks. - (Arun C Murthy via cutting) - - HADOOP-1601. Change GenericWritable to use ReflectionUtils for - instance creation, avoiding classloader issues, and to implement - Configurable. (Enis Soztutar via cutting) - - HADOOP-1750. Log standard output and standard error when forking - task processes. (omalley via cutting) - - HADOOP-1803. Generalize build.xml to make files in all - src/contrib/*/bin directories executable. (stack via cutting) - - HADOOP-1739. Let OS always choose the tasktracker's umbilical - port. Also switch default address for umbilical connections to - loopback. (cutting) - - HADOOP-1812. Let OS choose ports for IPC and RPC unit tests. (cutting) - - HADOOP-1825. Create $HADOOP_PID_DIR when it does not exist. - (Michael Bieniosek via cutting) - - HADOOP-1425. Replace uses of ToolBase with the Tool interface. - (Enis Soztutar via cutting) - - HADOOP-1569. Reimplement DistCP to use the standard FileSystem/URI - code in Hadoop so that you can copy from and to all of the supported file - systems.(Chris Douglas via omalley) - - HADOOP-1018. Improve documentation w.r.t handling of lost hearbeats between - TaskTrackers and JobTracker. (acmurthy) - - HADOOP-1718. Add ant targets for measuring code coverage with clover. - (simonwillnauer via nigel) - - HADOOP-1592. Log error messages to the client console when tasks - fail. (Amar Kamat via cutting) - - HADOOP-1879. Remove some unneeded casts. (Nilay Vaish via cutting) - - HADOOP-1878. Add space between priority links on job details - page. (Thomas Friol via cutting) - - HADOOP-120. In ArrayWritable, prevent creation with null value - class, and improve documentation. (Cameron Pope via cutting) - - HADOOP-1926. Add a random text writer example/benchmark so that we can - benchmark compression codecs on random data. (acmurthy via omalley) - - HADOOP-1906. Warn the user if they have an obsolete madred-default.xml - file in their configuration directory. (acmurthy via omalley) - - HADOOP-1971. Warn when job does not specify a jar. (enis via cutting) - - HADOOP-1942. Increase the concurrency of transaction logging to - edits log. Reduce the number of syncs by double-buffering the changes - to the transaction log. (Dhruba Borthakur) - - HADOOP-2046. Improve mapred javadoc. (Arun C. Murthy via cutting) - - HADOOP-2105. Improve overview.html to clarify supported platforms, - software pre-requisites for hadoop, how to install them on various - platforms and a better general description of hadoop and it's utility. - (Jim Kellerman via acmurthy) - - -Release 0.14.4 - 2007-11-26 - - BUG FIXES - - HADOOP-2140. Add missing Apache Licensing text at the front of several - C and C++ files. - - HADOOP-2169. Fix the DT_SONAME field of libhdfs.so to set it to the - correct value of 'libhdfs.so', currently it is set to the absolute path of - libhdfs.so. (acmurthy) - - HADOOP-2001. Make the job priority updates and job kills synchronized on - the JobTracker. Deadlock was seen in the JobTracker because of the lack of - this synchronization. (Arun C Murthy via ddas) - - -Release 0.14.3 - 2007-10-19 - - BUG FIXES - - HADOOP-2053. Fixed a dangling reference to a memory buffer in the map - output sorter. (acmurthy via omalley) - - HADOOP-2036. Fix a NullPointerException in JvmMetrics class. (nigel) - - HADOOP-2043. Release 0.14.2 was compiled with Java 1.6 rather than - Java 1.5. (cutting) - - -Release 0.14.2 - 2007-10-09 - - BUG FIXES - - HADOOP-1948. Removed spurious error message during block crc upgrade. - (Raghu Angadi via dhruba) - - HADOOP-1862. reduces are getting stuck trying to find map outputs. - (Arun C. Murthy via ddas) - - HADOOP-1977. Fixed handling of ToolBase cli options in JobClient. - (enis via omalley) - - HADOOP-1972. Fix LzoCompressor to ensure the user has actually asked - to finish compression. (arun via omalley) - - HADOOP-1970. Fix deadlock in progress reporting in the task. (Vivek - Ratan via omalley) - - HADOOP-1978. Name-node removes edits.new after a successful startup. - (Konstantin Shvachko via dhruba) - - HADOOP-1955. The Namenode tries to not pick the same source Datanode for - a replication request if the earlier replication request for the same - block and that source Datanode had failed. - (Raghu Angadi via dhruba) - - HADOOP-1961. The -get option to dfs-shell works when a single filename - is specified. (Raghu Angadi via dhruba) - - HADOOP-1997. TestCheckpoint closes the edits file after writing to it, - otherwise the rename of this file on Windows fails. - (Konstantin Shvachko via dhruba) - -Release 0.14.1 - 2007-09-04 - - BUG FIXES - - HADOOP-1740. Fix null pointer exception in sorting map outputs. (Devaraj - Das via omalley) - - HADOOP-1790. Fix tasktracker to work correctly on multi-homed - boxes. (Torsten Curdt via cutting) - - HADOOP-1798. Fix jobtracker to correctly account for failed - tasks. (omalley via cutting) - - -Release 0.14.0 - 2007-08-17 - - INCOMPATIBLE CHANGES - - 1. HADOOP-1134. - CONFIG/API - dfs.block.size must now be a multiple of - io.byte.per.checksum, otherwise new files can not be written. - LAYOUT - DFS layout version changed from -6 to -7, which will require an - upgrade from previous versions. - PROTOCOL - Datanode RPC protocol version changed from 7 to 8. - - 2. HADOOP-1283 - API - deprecated file locking API. - - 3. HADOOP-894 - PROTOCOL - changed ClientProtocol to fetch parts of block locations. - - 4. HADOOP-1336 - CONFIG - Enable speculative execution by default. - - 5. HADOOP-1197 - API - deprecated method for Configuration.getObject, because - Configurations should only contain strings. - - 6. HADOOP-1343 - API - deprecate Configuration.set(String,Object) so that only strings are - put in Configrations. - - 7. HADOOP-1207 - CLI - Fix FsShell 'rm' command to continue when a non-existent file is - encountered. - - 8. HADOOP-1473 - CLI/API - Job, TIP, and Task id formats have changed and are now unique - across job tracker restarts. - - 9. HADOOP-1400 - API - JobClient constructor now takes a JobConf object instead of a - Configuration object. - - NEW FEATURES and BUG FIXES - - 1. HADOOP-1197. In Configuration, deprecate getObject() and add - getRaw(), which skips variable expansion. (omalley via cutting) - - 2. HADOOP-1343. In Configuration, deprecate set(String,Object) and - implement Iterable. (omalley via cutting) - - 3. HADOOP-1344. Add RunningJob#getJobName(). (Michael Bieniosek via cutting) - - 4. HADOOP-1342. In aggregators, permit one to limit the number of - unique values per key. (Runping Qi via cutting) - - 5. HADOOP-1340. Set the replication factor of the MD5 file in the filecache - to be the same as the replication factor of the original file. - (Dhruba Borthakur via tomwhite.) - - 6. HADOOP-1355. Fix null pointer dereference in - TaskLogAppender.append(LoggingEvent). (Arun C Murthy via tomwhite.) - - 7. HADOOP-1357. Fix CopyFiles to correctly avoid removing "/". - (Arun C Murthy via cutting) - - 8. HADOOP-234. Add pipes facility, which permits writing MapReduce - programs in C++. - - 9. HADOOP-1359. Fix a potential NullPointerException in HDFS. - (Hairong Kuang via cutting) - - 10. HADOOP-1364. Fix inconsistent synchronization in SequenceFile. - (omalley via cutting) - - 11. HADOOP-1379. Add findbugs target to build.xml. - (Nigel Daley via cutting) - - 12. HADOOP-1364. Fix various inconsistent synchronization issues. - (Devaraj Das via cutting) - - 13. HADOOP-1393. Remove a potential unexpected negative number from - uses of random number generator. (omalley via cutting) - - 14. HADOOP-1387. A number of "performance" code-cleanups suggested - by findbugs. (Arun C Murthy via cutting) - - 15. HADOOP-1401. Add contrib/hbase javadoc to tree. (stack via cutting) - - 16. HADOOP-894. Change HDFS so that the client only retrieves a limited - number of block locations per request from the namenode. - (Konstantin Shvachko via cutting) - - 17. HADOOP-1406. Plug a leak in MapReduce's use of metrics. - (David Bowen via cutting) - - 18. HADOOP-1394. Implement "performance" code-cleanups in HDFS - suggested by findbugs. (Raghu Angadi via cutting) - - 19. HADOOP-1413. Add example program that uses Knuth's dancing links - algorithm to solve pentomino problems. (omalley via cutting) - - 20. HADOOP-1226. Change HDFS so that paths it returns are always - fully qualified. (Dhruba Borthakur via cutting) - - 21. HADOOP-800. Improvements to HDFS web-based file browser. - (Enis Soztutar via cutting) - - 22. HADOOP-1408. Fix a compiler warning by adding a class to replace - a generic. (omalley via cutting) - - 23. HADOOP-1376. Modify RandomWriter example so that it can generate - data for the Terasort benchmark. (Devaraj Das via cutting) - - 24. HADOOP-1429. Stop logging exceptions during normal IPC server - shutdown. (stack via cutting) - - 25. HADOOP-1461. Fix the synchronization of the task tracker to - avoid lockups in job cleanup. (Arun C Murthy via omalley) - - 26. HADOOP-1446. Update the TaskTracker metrics while the task is - running. (Devaraj via omalley) - - 27. HADOOP-1414. Fix a number of issues identified by FindBugs as - "Bad Practice". (Dhruba Borthakur via cutting) - - 28. HADOOP-1392. Fix "correctness" bugs identified by FindBugs in - fs and dfs packages. (Raghu Angadi via cutting) - - 29. HADOOP-1412. Fix "dodgy" bugs identified by FindBugs in fs and - io packages. (Hairong Kuang via cutting) - - 30. HADOOP-1261. Remove redundant events from HDFS namenode's edit - log when a datanode restarts. (Raghu Angadi via cutting) - - 31. HADOOP-1336. Re-enable speculative execution by - default. (omalley via cutting) - - 32. HADOOP-1311. Fix a bug in BytesWritable#set() where start offset - was ignored. (Dhruba Borthakur via cutting) - - 33. HADOOP-1450. Move checksumming closer to user code, so that - checksums are created before data is stored in large buffers and - verified after data is read from large buffers, to better catch - memory errors. (cutting) - - 34. HADOOP-1447. Add support in contrib/data_join for text inputs. - (Senthil Subramanian via cutting) - - 35. HADOOP-1456. Fix TestDecommission assertion failure by setting - the namenode to ignore the load on datanodes while allocating - replicas. (Dhruba Borthakur via tomwhite) - - 36. HADOOP-1396. Fix FileNotFoundException on DFS block. - (Dhruba Borthakur via tomwhite) - - 37. HADOOP-1467. Remove redundant counters from WordCount example. - (Owen O'Malley via tomwhite) - - 38. HADOOP-1139. Log HDFS block transitions at INFO level, to better - enable diagnosis of problems. (Dhruba Borthakur via cutting) - - 39. HADOOP-1269. Finer grained locking in HDFS namenode. - (Dhruba Borthakur via cutting) - - 40. HADOOP-1438. Improve HDFS documentation, correcting typos and - making images appear in PDF. Also update copyright date for all - docs. (Luke Nezda via cutting) - - 41. HADOOP-1457. Add counters for monitoring task assignments. - (Arun C Murthy via tomwhite) - - 42. HADOOP-1472. Fix so that timed-out tasks are counted as failures - rather than as killed. (Arun C Murthy via cutting) - - 43. HADOOP-1234. Fix a race condition in file cache that caused - tasktracker to not be able to find cached files. - (Arun C Murthy via cutting) - - 44. HADOOP-1482. Fix secondary namenode to roll info port. - (Dhruba Borthakur via cutting) - - 45. HADOOP-1300. Improve removal of excess block replicas to be - rack-aware. Attempts are now made to keep replicas on more - racks. (Hairong Kuang via cutting) - - 46. HADOOP-1417. Disable a few FindBugs checks that generate a lot - of spurious warnings. (Nigel Daley via cutting) - - 47. HADOOP-1320. Rewrite RandomWriter example to bypass reduce. - (Arun C Murthy via cutting) - - 48. HADOOP-1449. Add some examples to contrib/data_join. - (Senthil Subramanian via cutting) - - 49. HADOOP-1459. Fix so that, in HDFS, getFileCacheHints() returns - hostnames instead of IP addresses. (Dhruba Borthakur via cutting) - - 50. HADOOP-1493. Permit specification of "java.library.path" system - property in "mapred.child.java.opts" configuration property. - (Enis Soztutar via cutting) - - 51. HADOOP-1372. Use LocalDirAllocator for HDFS temporary block - files, so that disk space, writability, etc. is considered. - (Dhruba Borthakur via cutting) - - 52. HADOOP-1193. Pool allocation of compression codecs. This - eliminates a memory leak that could cause OutOfMemoryException, - and also substantially improves performance. - (Arun C Murthy via cutting) - - 53. HADOOP-1492. Fix a NullPointerException handling version - mismatch during datanode registration. - (Konstantin Shvachko via cutting) - - 54. HADOOP-1442. Fix handling of zero-length input splits. - (Senthil Subramanian via cutting) - - 55. HADOOP-1444. Fix HDFS block id generation to check pending - blocks for duplicates. (Dhruba Borthakur via cutting) - - 56. HADOOP-1207. Fix FsShell's 'rm' command to not stop when one of - the named files does not exist. (Tsz Wo Sze via cutting) - - 57. HADOOP-1475. Clear tasktracker's file cache before it - re-initializes, to avoid confusion. (omalley via cutting) - - 58. HADOOP-1505. Remove spurious stacktrace in ZlibFactory - introduced in HADOOP-1093. (Michael Stack via tomwhite) - - 59. HADOOP-1484. Permit one to kill jobs from the web ui. Note that - this is disabled by default. One must set - "webinterface.private.actions" to enable this. - (Enis Soztutar via cutting) - - 60. HADOOP-1003. Remove flushing of namenode edit log from primary - namenode lock, increasing namenode throughput. - (Dhruba Borthakur via cutting) - - 61. HADOOP-1023. Add links to searchable mail archives. - (tomwhite via cutting) - - 62. HADOOP-1504. Fix terminate-hadoop-cluster script in contrib/ec2 - to only terminate Hadoop instances, and not other instances - started by the same user. (tomwhite via cutting) - - 63. HADOOP-1462. Improve task progress reporting. Progress reports - are no longer blocking since i/o is performed in a separate - thread. Reporting during sorting and more is also more - consistent. (Vivek Ratan via cutting) - - 64. [ intentionally blank ] - - 65. HADOOP-1453. Remove some unneeded calls to FileSystem#exists() - when opening files, reducing the namenode load somewhat. - (Raghu Angadi via cutting) - - 66. HADOOP-1489. Fix text input truncation bug due to mark/reset. - Add a unittest. (Bwolen Yang via cutting) - - 67. HADOOP-1455. Permit specification of arbitrary job options on - pipes command line. (Devaraj Das via cutting) - - 68. HADOOP-1501. Better randomize sending of block reports to - namenode, so reduce load spikes. (Dhruba Borthakur via cutting) - - 69. HADOOP-1147. Remove @author tags from Java source files. - - 70. HADOOP-1283. Convert most uses of UTF8 in the namenode to be - String. (Konstantin Shvachko via cutting) - - 71. HADOOP-1511. Speedup hbase unit tests. (stack via cutting) - - 72. HADOOP-1517. Remove some synchronization in namenode to permit - finer grained locking previously added. (Konstantin Shvachko via cutting) - - 73. HADOOP-1512. Fix failing TestTextInputFormat on Windows. - (Senthil Subramanian via nigel) - - 74. HADOOP-1518. Add a session id to job metrics, for use by HOD. - (David Bowen via cutting) - - 75. HADOOP-1292. Change 'bin/hadoop fs -get' to first copy files to - a temporary name, then rename them to their final name, so that - failures don't leave partial files. (Tsz Wo Sze via cutting) - - 76. HADOOP-1377. Add support for modification time to FileSystem and - implement in HDFS and local implementations. Also, alter access - to file properties to be through a new FileStatus interface. - (Dhruba Borthakur via cutting) - - 77. HADOOP-1515. Add MultiFileInputFormat, which can pack multiple, - typically small, input files into each split. (Enis Soztutar via cutting) - - 78. HADOOP-1514. Make reducers report progress while waiting for map - outputs, so they're not killed. (Vivek Ratan via cutting) - - 79. HADOOP-1508. Add an Ant task for FsShell operations. Also add - new FsShell commands "touchz", "test" and "stat". - (Chris Douglas via cutting) - - 80. HADOOP-1028. Add log messages for server startup and shutdown. - (Tsz Wo Sze via cutting) - - 81. HADOOP-1485. Add metrics for monitoring shuffle. - (Devaraj Das via cutting) - - 82. HADOOP-1536. Remove file locks from libhdfs tests. - (Dhruba Borthakur via nigel) - - 83. HADOOP-1520. Add appropriate synchronization to FSEditsLog. - (Dhruba Borthakur via nigel) - - 84. HADOOP-1513. Fix a race condition in directory creation. - (Devaraj via omalley) - - 85. HADOOP-1546. Remove spurious column from HDFS web UI. - (Dhruba Borthakur via cutting) - - 86. HADOOP-1556. Make LocalJobRunner delete working files at end of - job run. (Devaraj Das via tomwhite) - - 87. HADOOP-1571. Add contrib lib directories to root build.xml - javadoc classpath. (Michael Stack via tomwhite) - - 88. HADOOP-1554. Log killed tasks to the job history and display them on the - web/ui. (Devaraj Das via omalley) - - 89. HADOOP-1533. Add persistent error logging for distcp. The logs are stored - into a specified hdfs directory. (Senthil Subramanian via omalley) - - 90. HADOOP-1286. Add support to HDFS for distributed upgrades, which - permits coordinated upgrade of datanode data. - (Konstantin Shvachko via cutting) - - 91. HADOOP-1580. Improve contrib/streaming so that subprocess exit - status is displayed for errors. (John Heidemann via cutting) - - 92. HADOOP-1448. In HDFS, randomize lists of non-local block - locations returned to client, so that load is better balanced. - (Hairong Kuang via cutting) - - 93. HADOOP-1578. Fix datanode to send its storage id to namenode - during registration. (Konstantin Shvachko via cutting) - - 94. HADOOP-1584. Fix a bug in GenericWritable which limited it to - 128 types instead of 256. (Espen Amble Kolstad via cutting) - - 95. HADOOP-1473. Make job ids unique across jobtracker restarts. - (omalley via cutting) - - 96. HADOOP-1582. Fix hdfslib to return 0 instead of -1 at - end-of-file, per C conventions. (Christian Kunz via cutting) - - 97. HADOOP-911. Fix a multithreading bug in libhdfs. - (Christian Kunz) - - 98. HADOOP-1486. Fix so that fatal exceptions in namenode cause it - to exit. (Dhruba Borthakur via cutting) - - 99. HADOOP-1470. Factor checksum generation and validation out of - ChecksumFileSystem so that it can be reused by FileSystem's with - built-in checksumming. (Hairong Kuang via cutting) - -100. HADOOP-1590. Use relative urls in jobtracker jsp pages, so that - webapp can be used in non-root contexts. (Thomas Friol via cutting) - -101. HADOOP-1596. Fix the parsing of taskids by streaming and improve the - error reporting. (omalley) - -102. HADOOP-1535. Fix the user-controlled grouping to the reduce function. - (Vivek Ratan via omalley) - -103. HADOOP-1585. Modify GenericWritable to declare the classes as subtypes - of Writable (Espen Amble Kolstad via omalley) - -104. HADOOP-1576. Fix errors in count of completed tasks when - speculative execution is enabled. (Arun C Murthy via cutting) - -105. HADOOP-1598. Fix license headers: adding missing; updating old. - (Enis Soztutar via cutting) - -106. HADOOP-1547. Provide examples for aggregate library. - (Runping Qi via tomwhite) - -107. HADOOP-1570. Permit jobs to enable and disable the use of - hadoop's native library. (Arun C Murthy via cutting) - -108. HADOOP-1433. Add job priority. (Johan Oskarsson via tomwhite) - -109. HADOOP-1597. Add status reports and post-upgrade options to HDFS - distributed upgrade. (Konstantin Shvachko via cutting) - -110. HADOOP-1524. Permit user task logs to appear as they're - created. (Michael Bieniosek via cutting) - -111. HADOOP-1599. Fix distcp bug on Windows. (Senthil Subramanian via cutting) - -112. HADOOP-1562. Add JVM metrics, including GC and logging stats. - (David Bowen via cutting) - -113. HADOOP-1613. Fix "DFS Health" page to display correct time of - last contact. (Dhruba Borthakur via cutting) - -114. HADOOP-1134. Add optimized checksum support to HDFS. Checksums - are now stored with each block, rather than as parallel files. - This reduces the namenode's memory requirements and increases - data integrity. (Raghu Angadi via cutting) - -115. HADOOP-1400. Make JobClient retry requests, so that clients can - survive jobtracker problems. (omalley via cutting) - -116. HADOOP-1564. Add unit tests for HDFS block-level checksums. - (Dhruba Borthakur via cutting) - -117. HADOOP-1620. Reduce the number of abstract FileSystem methods, - simplifying implementations. (cutting) - -118. HADOOP-1625. Fix a "could not move files" exception in datanode. - (Raghu Angadi via cutting) - -119. HADOOP-1624. Fix an infinite loop in datanode. (Raghu Angadi via cutting) - -120. HADOOP-1084. Switch mapred file cache to use file modification - time instead of checksum to detect file changes, as checksums are - no longer easily accessed. (Arun C Murthy via cutting) - -130. HADOOP-1623. Fix an infinite loop when copying directories. - (Dhruba Borthakur via cutting) - -131. HADOOP-1603. Fix a bug in namenode initialization where - default replication is sometimes reset to one on restart. - (Raghu Angadi via cutting) - -132. HADOOP-1635. Remove hardcoded keypair name and fix launch-hadoop-cluster - to support later versions of ec2-api-tools. (Stu Hood via tomwhite) - -133. HADOOP-1638. Fix contrib EC2 scripts to support NAT addressing. - (Stu Hood via tomwhite) - -134. HADOOP-1632. Fix an IllegalArgumentException in fsck. - (Hairong Kuang via cutting) - -135. HADOOP-1619. Fix FSInputChecker to not attempt to read past EOF. - (Hairong Kuang via cutting) - -136. HADOOP-1640. Fix TestDecommission on Windows. - (Dhruba Borthakur via cutting) - -137. HADOOP-1587. Fix TestSymLink to get required system properties. - (Devaraj Das via omalley) - -138. HADOOP-1628. Add block CRC protocol unit tests. (Raghu Angadi via omalley) - -139. HADOOP-1653. FSDirectory code-cleanups. FSDirectory.INode - becomes a static class. (Christophe Taton via dhruba) - -140. HADOOP-1066. Restructure documentation to make more user - friendly. (Connie Kleinjans and Jeff Hammerbacher via cutting) - -141. HADOOP-1551. libhdfs supports setting replication factor and - retrieving modification time of files. (Sameer Paranjpye via dhruba) - -141. HADOOP-1647. FileSystem.getFileStatus returns valid values for "/". - (Dhruba Borthakur via dhruba) - -142. HADOOP-1657. Fix NNBench to ensure that the block size is a - multiple of bytes.per.checksum. (Raghu Angadi via dhruba) - -143. HADOOP-1553. Replace user task output and log capture code to use shell - redirection instead of copier threads in the TaskTracker. Capping the - size of the output is now done via tail in memory and thus should not be - large. The output of the tasklog servlet is not forced into UTF8 and is - not buffered entirely in memory. (omalley) - Configuration changes to hadoop-default.xml: - remove mapred.userlog.num.splits - remove mapred.userlog.purge.splits - change default mapred.userlog.limit.kb to 0 (no limit) - change default mapred.userlog.retain.hours to 24 - Configuration changes to log4j.properties: - remove log4j.appender.TLA.noKeepSplits - remove log4j.appender.TLA.purgeLogSplits - remove log4j.appender.TLA.logsRetainHours - URL changes: - http://<tasktracker>/tasklog.jsp -> http://<tasktracker>tasklog with - parameters limited to start and end, which may be positive (from - start) or negative (from end). - Environment: - require bash (v2 or later) and tail - -144. HADOOP-1659. Fix a job id/job name mixup. (Arun C. Murthy via omalley) - -145. HADOOP-1665. With HDFS Trash enabled and the same file was created - and deleted more than once, the suceeding deletions creates Trash item - names suffixed with a integer. (Dhruba Borthakur via dhruba) - -146. HADOOP-1666. FsShell object can be used for multiple fs commands. - (Dhruba Borthakur via dhruba) - -147. HADOOP-1654. Remove performance regression introduced by Block CRC. - (Raghu Angadi via dhruba) - -148. HADOOP-1680. Improvements to Block CRC upgrade messages. - (Raghu Angadi via dhruba) - -149. HADOOP-71. Allow Text and SequenceFile Map/Reduce inputs from non-default - filesystems. (omalley) - -150. HADOOP-1568. Expose HDFS as xml/http filesystem to provide cross-version - compatability. (Chris Douglas via omalley) - -151. HADOOP-1668. Added an INCOMPATIBILITY section to CHANGES.txt. (nigel) - -152. HADOOP-1629. Added a upgrade test for HADOOP-1134. - (Raghu Angadi via nigel) - -153. HADOOP-1698. Fix performance problems on map output sorting for jobs - with large numbers of reduces. (Devaraj Das via omalley) - -154. HADOOP-1716. Fix a Pipes wordcount example to remove the 'file:' - schema from its output path. (omalley via cutting) - -155. HADOOP-1714. Fix TestDFSUpgradeFromImage to work on Windows. - (Raghu Angadi via nigel) - -156. HADOOP-1663. Return a non-zero exit code if streaming fails. (Lohit Renu - via omalley) - -157. HADOOP-1712. Fix an unhandled exception on datanode during block - CRC upgrade. (Raghu Angadi via cutting) - -158. HADOOP-1717. Fix TestDFSUpgradeFromImage to work on Solaris. - (nigel via cutting) - -159. HADOOP-1437. Add Eclipse plugin in contrib. - (Eugene Hung and Christophe Taton via cutting) - - -Release 0.13.0 - 2007-06-08 - - 1. HADOOP-1047. Fix TestReplication to succeed more reliably. - (Hairong Kuang via cutting) - - 2. HADOOP-1063. Fix a race condition in MiniDFSCluster test code. - (Hairong Kuang via cutting) - - 3. HADOOP-1101. In web ui, split shuffle statistics from reduce - statistics, and add some task averages. (Devaraj Das via cutting) - - 4. HADOOP-1071. Improve handling of protocol version mismatch in - JobTracker. (Tahir Hashmi via cutting) - - 5. HADOOP-1116. Increase heap size used for contrib unit tests. - (Philippe Gassmann via cutting) - - 6. HADOOP-1120. Add contrib/data_join, tools to simplify joining - data from multiple sources using MapReduce. (Runping Qi via cutting) - - 7. HADOOP-1064. Reduce log level of some DFSClient messages. - (Dhruba Borthakur via cutting) - - 8. HADOOP-1137. Fix StatusHttpServer to work correctly when - resources are in a jar file. (Benjamin Reed via cutting) - - 9. HADOOP-1094. Optimize generated Writable implementations for - records to not allocate a new BinaryOutputArchive or - BinaryInputArchive per call. (Milind Bhandarkar via cutting) - -10. HADOOP-1068. Improve error message for clusters with 0 datanodes. - (Dhruba Borthakur via tomwhite) - -11. HADOOP-1122. Fix divide-by-zero exception in FSNamesystem - chooseTarget method. (Dhruba Borthakur via tomwhite) - -12. HADOOP-1131. Add a closeAll() static method to FileSystem. - (Philippe Gassmann via tomwhite) - -13. HADOOP-1085. Improve port selection in HDFS and MapReduce test - code. Ports are now selected by the OS during testing rather than - by probing for free ports, improving test reliability. - (Arun C Murthy via cutting) - -14. HADOOP-1153. Fix HDFS daemons to correctly stop their threads. - (Konstantin Shvachko via cutting) - -15. HADOOP-1146. Add a counter for reduce input keys and rename the - "reduce input records" counter to be "reduce input groups". - (David Bowen via cutting) - -16. HADOOP-1165. In records, replace idential generated toString - methods with a method on the base class. (Milind Bhandarkar via cutting) - -17. HADOOP-1164. Fix TestReplicationPolicy to specify port zero, so - that a free port is automatically selected. (omalley via cutting) - -18. HADOOP-1166. Add a NullOutputFormat and use it in the - RandomWriter example. (omalley via cutting) - -19. HADOOP-1169. Fix a cut/paste error in CopyFiles utility so that - S3-based source files are correctly copied. (Michael Stack via cutting) - -20. HADOOP-1167. Remove extra synchronization in InMemoryFileSystem. - (omalley via cutting) - -21. HADOOP-1110. Fix an off-by-one error counting map inputs. - (David Bowen via cutting) - -22. HADOOP-1178. Fix a NullPointerException during namenode startup. - (Dhruba Borthakur via cutting) - -23. HADOOP-1011. Fix a ConcurrentModificationException when viewing - job history. (Tahir Hashmi via cutting) - -24. HADOOP-672. Improve help for fs shell commands. - (Dhruba Borthakur via cutting) - -25. HADOOP-1170. Improve datanode performance by removing device - checks from common operations. (Igor Bolotin via cutting) - -26. HADOOP-1090. Fix SortValidator's detection of whether the input - file belongs to the sort-input or sort-output directory. - (Arun C Murthy via tomwhite) - -27. HADOOP-1081. Fix bin/hadoop on Darwin. (Michael Bieniosek via cutting) - -28. HADOOP-1045. Add contrib/hbase, a BigTable-like online database. - (Jim Kellerman via cutting) - -29. HADOOP-1156. Fix a NullPointerException in MiniDFSCluster. - (Hairong Kuang via cutting) - -30. HADOOP-702. Add tools to help automate HDFS upgrades. - (Konstantin Shvachko via cutting) - -31. HADOOP-1163. Fix ganglia metrics to aggregate metrics from different - hosts properly. (Michael Bieniosek via tomwhite) - -32. HADOOP-1194. Make compression style record level for map output - compression. (Arun C Murthy via tomwhite) - -33. HADOOP-1187. Improve DFS Scalability: avoid scanning entire list of - datanodes in getAdditionalBlocks. (Dhruba Borthakur via tomwhite) - -34. HADOOP-1133. Add tool to analyze and debug namenode on a production - cluster. (Dhruba Borthakur via tomwhite) - -35. HADOOP-1151. Remove spurious printing to stderr in streaming - PipeMapRed. (Koji Noguchi via tomwhite) - -36. HADOOP-988. Change namenode to use a single map of blocks to metadata. - (Raghu Angadi via tomwhite) - -37. HADOOP-1203. Change UpgradeUtilities used by DFS tests to use - MiniDFSCluster to start and stop NameNode/DataNodes. - (Nigel Daley via tomwhite) - -38. HADOOP-1217. Add test.timeout property to build.xml, so that - long-running unit tests may be automatically terminated. - (Nigel Daley via cutting) - -39. HADOOP-1149. Improve DFS Scalability: make - processOverReplicatedBlock() a no-op if blocks are not - over-replicated. (Raghu Angadi via tomwhite) - -40. HADOOP-1149. Improve DFS Scalability: optimize getDistance(), - contains(), and isOnSameRack() in NetworkTopology. - (Hairong Kuang via tomwhite) - -41. HADOOP-1218. Make synchronization on TaskTracker's RunningJob - object consistent. (Devaraj Das via tomwhite) - -42. HADOOP-1219. Ignore progress report once a task has reported as - 'done'. (Devaraj Das via tomwhite) - -43. HADOOP-1114. Permit user to specify additional CLASSPATH elements - with a HADOOP_CLASSPATH environment variable. (cutting) - -44. HADOOP-1198. Remove ipc.client.timeout parameter override from - unit test configuration. Using the default is more robust and - has almost the same run time. (Arun C Murthy via tomwhite) - -45. HADOOP-1211. Remove deprecated constructor and unused static - members in DataNode class. (Konstantin Shvachko via tomwhite) - -46. HADOOP-1136. Fix ArrayIndexOutOfBoundsException in - FSNamesystem$UnderReplicatedBlocks add() method. - (Hairong Kuang via tomwhite) - -47. HADOOP-978. Add the client name and the address of the node that - previously started to create the file to the description of - AlreadyBeingCreatedException. (Konstantin Shvachko via tomwhite) - -48. HADOOP-1001. Check the type of keys and values generated by the - mapper against the types specified in JobConf. - (Tahir Hashmi via tomwhite) - -49. HADOOP-971. Improve DFS Scalability: Improve name node performance - by adding a hostname to datanodes map. (Hairong Kuang via tomwhite) - -50. HADOOP-1189. Fix 'No space left on device' exceptions on datanodes. - (Raghu Angadi via tomwhite) - -51. HADOOP-819. Change LineRecordWriter to not insert a tab between - key and value when either is null, and to print nothing when both - are null. (Runping Qi via cutting) - -52. HADOOP-1204. Rename InputFormatBase to be FileInputFormat, and - deprecate InputFormatBase. Also make LineRecordReader easier to - extend. (Runping Qi via cutting) - -53. HADOOP-1213. Improve logging of errors by IPC server, to - consistently include the service name and the call. (cutting) - -54. HADOOP-1238. Fix metrics reporting by TaskTracker to correctly - track maps_running and reduces_running. - (Michael Bieniosek via cutting) - -55. HADOOP-1093. Fix a race condition in HDFS where blocks were - sometimes erased before they were reported written. - (Dhruba Borthakur via cutting) - -56. HADOOP-1239. Add a package name to some testjar test classes. - (Jim Kellerman via cutting) - -57. HADOOP-1241. Fix NullPointerException in processReport when - namenode is restarted. (Dhruba Borthakur via tomwhite) - -58. HADOOP-1244. Fix stop-dfs.sh to no longer incorrectly specify - slaves file for stopping datanode. - (Michael Bieniosek via tomwhite) - -59. HADOOP-1253. Fix ConcurrentModificationException and - NullPointerException in JobControl. - (Johan Oskarson via tomwhite) - -60. HADOOP-1256. Fix NameNode so that multiple DataNodeDescriptors - can no longer be created on startup. (Hairong Kuang via cutting) - -61. HADOOP-1214. Replace streaming classes with new counterparts - from Hadoop core. (Runping Qi via tomwhite) - -62. HADOOP-1250. Move a chmod utility from streaming to FileUtil. - (omalley via cutting) - -63. HADOOP-1258. Fix TestCheckpoint test case to wait for - MiniDFSCluster to be active. (Nigel Daley via tomwhite) - -64. HADOOP-1148. Re-indent all Java source code to consistently use - two spaces per indent level. (cutting) - -65. HADOOP-1251. Add a method to Reporter to get the map InputSplit. - (omalley via cutting) - -66. HADOOP-1224. Fix "Browse the filesystem" link to no longer point - to dead datanodes. (Enis Soztutar via tomwhite) - -67. HADOOP-1154. Fail a streaming task if the threads reading from or - writing to the streaming process fail. (Koji Noguchi via tomwhite) - -68. HADOOP-968. Move shuffle and sort to run in reduce's child JVM, - rather than in TaskTracker. (Devaraj Das via cutting) - -69. HADOOP-1111. Add support for client notification of job - completion. If the job configuration has a job.end.notification.url - property it will make a HTTP GET request to the specified URL. - The number of retries and the interval between retries is also - configurable. (Alejandro Abdelnur via tomwhite) - -70. HADOOP-1275. Fix misspelled job notification property in - hadoop-default.xml. (Alejandro Abdelnur via tomwhite) - -71. HADOOP-1152. Fix race condition in MapOutputCopier.copyOutput file - rename causing possible reduce task hang. - (Tahir Hashmi via tomwhite) - -72. HADOOP-1050. Distinguish between failed and killed tasks so as to - not count a lost tasktracker against the job. - (Arun C Murthy via tomwhite) - -73. HADOOP-1271. Fix StreamBaseRecordReader to be able to log record - data that's not UTF-8. (Arun C Murthy via tomwhite) - -74. HADOOP-1190. Fix unchecked warnings in main Hadoop code. - (tomwhite) - -75. HADOOP-1127. Fix AlreadyBeingCreatedException in namenode for - jobs run with speculative execution. - (Arun C Murthy via tomwhite) - -76. HADOOP-1282. Omnibus HBase patch. Improved tests & configuration. - (Jim Kellerman via cutting) - -77. HADOOP-1262. Make dfs client try to read from a different replica - of the checksum file when a checksum error is detected. - (Hairong Kuang via tomwhite) - -78. HADOOP-1279. Fix JobTracker to maintain list of recently - completed jobs by order of completion, not submission. - (Arun C Murthy via cutting) - -79. HADOOP-1284. In contrib/streaming, permit flexible specification - of field delimiter and fields for partitioning and sorting. - (Runping Qi via cutting) - -80. HADOOP-1176. Fix a bug where reduce would hang when a map had - more than 2GB of output for it. (Arun C Murthy via cutting) - -81. HADOOP-1293. Fix contrib/streaming to print more than the first - twenty lines of standard error. (Koji Noguchi via cutting) - -82. HADOOP-1297. Fix datanode so that requests to remove blocks that - do not exist no longer causes block reports to be re-sent every - second. (Dhruba Borthakur via cutting) - -83. HADOOP-1216. Change MapReduce so that, when numReduceTasks is - zero, map outputs are written directly as final output, skipping - shuffle, sort and reduce. Use this to implement reduce=NONE - option in contrib/streaming. (Runping Qi via cutting) - -84. HADOOP-1294. Fix unchecked warnings in main Hadoop code under - Java 6. (tomwhite) - -85. HADOOP-1299. Fix so that RPC will restart after RPC.stopClient() - has been called. (Michael Stack via cutting) - -86. HADOOP-1278. Improve blacklisting of TaskTrackers by JobTracker, - to reduce false positives. (Arun C Murthy via cutting) - -87. HADOOP-1290. Move contrib/abacus into mapred/lib/aggregate. - (Runping Qi via cutting) - -88. HADOOP-1272. Extract inner classes from FSNamesystem into separate - classes. (Dhruba Borthakur via tomwhite) - -89. HADOOP-1247. Add support to contrib/streaming for aggregate - package, formerly called Abacus. (Runping Qi via cutting) - -90. HADOOP-1061. Fix bug in listing files in the S3 filesystem. - NOTE: this change is not backwards compatible! You should use the - MigrationTool supplied to migrate existing S3 filesystem data to - the new format. Please backup your data first before upgrading - (using 'hadoop distcp' for example). (tomwhite) - -91. HADOOP-1304. Make configurable the maximum number of task - attempts before a job fails. (Devaraj Das via cutting) - -92. HADOOP-1308. Use generics to restrict types when classes are - passed as parameters to JobConf methods. (Michael Bieniosek via cutting) - -93. HADOOP-1312. Fix a ConcurrentModificationException in NameNode - that killed the heartbeat monitoring thread. - (Dhruba Borthakur via cutting) - -94. HADOOP-1315. Clean up contrib/streaming, switching it to use core - classes more and removing unused code. (Runping Qi via cutting) - -95. HADOOP-485. Allow a different comparator for grouping keys in - calls to reduce. (Tahir Hashmi via cutting) - -96. HADOOP-1322. Fix TaskTracker blacklisting to work correctly in - one- and two-node clusters. (Arun C Murthy via cutting) - -97. HADOOP-1144. Permit one to specify a maximum percentage of tasks - that can fail before a job is aborted. The default is zero. - (Arun C Murthy via cutting) - -98. HADOOP-1184. Fix HDFS decomissioning to complete when the only - copy of a block is on a decommissioned node. (Dhruba Borthakur via cutting) - -99. HADOOP-1263. Change DFSClient to retry certain namenode calls - with a random, exponentially increasing backoff time, to avoid - overloading the namenode on, e.g., job start. (Hairong Kuang via cutting) - -100. HADOOP-1325. First complete, functioning version of HBase. - (Jim Kellerman via cutting) - -101. HADOOP-1276. Make tasktracker expiry interval configurable. - (Arun C Murthy via cutting) - -102. HADOOP-1326. Change JobClient#RunJob() to return the job. - (omalley via cutting) - -103. HADOOP-1270. Randomize the fetch of map outputs, speeding the - shuffle. (Arun C Murthy via cutting) - -104. HADOOP-1200. Restore disk checking lost in HADOOP-1170. - (Hairong Kuang via cutting) - -105. HADOOP-1252. Changed MapReduce's allocation of local files to - use round-robin among available devices, rather than a hashcode. - More care is also taken to not allocate files on full or offline - drives. (Devaraj Das via cutting) - -106. HADOOP-1324. Change so that an FSError kills only the task that - generates it rather than the entire task tracker. - (Arun C Murthy via cutting) - -107. HADOOP-1310. Fix unchecked warnings in aggregate code. (tomwhite) - -108. HADOOP-1255. Fix a bug where the namenode falls into an infinite - loop trying to remove a dead node. (Hairong Kuang via cutting) - -109. HADOOP-1160. Fix DistributedFileSystem.close() to close the - underlying FileSystem, correctly aborting files being written. - (Hairong Kuang via cutting) - -110. HADOOP-1341. Fix intermittent failures in HBase unit tests - caused by deadlock. (Jim Kellerman via cutting) - -111. HADOOP-1350. Fix shuffle performance problem caused by forcing - chunked encoding of map outputs. (Devaraj Das via cutting) - -112. HADOOP-1345. Fix HDFS to correctly retry another replica when a - checksum error is encountered. (Hairong Kuang via cutting) - -113. HADOOP-1205. Improve synchronization around HDFS block map. - (Hairong Kuang via cutting) - -114. HADOOP-1353. Fix a potential NullPointerException in namenode. - (Dhruba Borthakur via cutting) - -115. HADOOP-1354. Fix a potential NullPointerException in FsShell. - (Hairong Kuang via cutting) - -116. HADOOP-1358. Fix a potential bug when DFSClient calls skipBytes. - (Hairong Kuang via cutting) - -117. HADOOP-1356. Fix a bug in ValueHistogram. (Runping Qi via cutting) - -118. HADOOP-1363. Fix locking bug in JobClient#waitForCompletion(). - (omalley via cutting) - -119. HADOOP-1368. Fix inconsistent synchronization in JobInProgress. - (omalley via cutting) - -120. HADOOP-1369. Fix inconsistent synchronization in TaskTracker. - (omalley via cutting) - -121. HADOOP-1361. Fix various calls to skipBytes() to check return - value. (Hairong Kuang via cutting) - -122. HADOOP-1388. Fix a potential NullPointerException in web ui. - (Devaraj Das via cutting) - -123. HADOOP-1385. Fix MD5Hash#hashCode() to generally hash to more - than 256 values. (omalley via cutting) - -124. HADOOP-1386. Fix Path to not permit the empty string as a - path, as this has lead to accidental file deletion. Instead - force applications to use "." to name the default directory. - (Hairong Kuang via cutting) - -125. HADOOP-1407. Fix integer division bug in JobInProgress which - meant failed tasks didn't cause the job to fail. - (Arun C Murthy via tomwhite) - -126. HADOOP-1427. Fix a typo that caused GzipCodec to incorrectly use - a very small input buffer. (Espen Amble Kolstad via cutting) - -127. HADOOP-1435. Fix globbing code to no longer use the empty string - to indicate the default directory, per HADOOP-1386. - (Hairong Kuang via cutting) - -128. HADOOP-1411. Make task retry framework handle - AlreadyBeingCreatedException when wrapped as a RemoteException. - (Hairong Kuang via tomwhite) - -129. HADOOP-1242. Improve handling of DFS upgrades. - (Konstantin Shvachko via cutting) - -130. HADOOP-1332. Fix so that TaskTracker exits reliably during unit - tests on Windows. (omalley via cutting) - -131. HADOOP-1431. Fix so that sort progress reporting during map runs - only while sorting, so that stuck maps are correctly terminated. - (Devaraj Das and Arun C Murthy via cutting) - -132. HADOOP-1452. Change TaskTracker.MapOutputServlet.doGet.totalRead - to a long, permitting map outputs to exceed 2^31 bytes. - (omalley via cutting) - -133. HADOOP-1443. Fix a bug opening zero-length files in HDFS. - (Konstantin Shvachko via cutting) - - -Release 0.12.3 - 2007-04-06 - - 1. HADOOP-1162. Fix bug in record CSV and XML serialization of - binary values. (Milind Bhandarkar via cutting) - - 2. HADOOP-1123. Fix NullPointerException in LocalFileSystem when - trying to recover from a checksum error. - (Hairong Kuang & Nigel Daley via tomwhite) - - 3. HADOOP-1177. Fix bug where IOException in MapOutputLocation.getFile - was not being logged. (Devaraj Das via tomwhite) - - 4. HADOOP-1175. Fix bugs in JSP for displaying a task's log messages. - (Arun C Murthy via cutting) - - 5. HADOOP-1191. Fix map tasks to wait until sort progress thread has - stopped before reporting the task done. (Devaraj Das via cutting) - - 6. HADOOP-1192. Fix an integer overflow bug in FSShell's 'dus' - command and a performance problem in HDFS's implementation of it. - (Hairong Kuang via cutting) - - 7. HADOOP-1105. Fix reducers to make "progress" while iterating - through values. (Devaraj Das & Owen O'Malley via tomwhite) - - 8. HADOOP-1179. Make Task Tracker close index file as soon as the read - is done when serving get-map-output requests. - (Devaraj Das via tomwhite) - - -Release 0.12.2 - 2007-23-17 - - 1. HADOOP-1135. Fix bug in block report processing which may cause - the namenode to delete blocks. (Dhruba Borthakur via tomwhite) - - 2. HADOOP-1145. Make XML serializer and deserializer classes public - in record package. (Milind Bhandarkar via cutting) - - 3. HADOOP-1140. Fix a deadlock in metrics. (David Bowen via cutting) - - 4. HADOOP-1150. Fix streaming -reducer and -mapper to give them - defaults. (Owen O'Malley via tomwhite) - - -Release 0.12.1 - 2007-03-17 - - 1. HADOOP-1035. Fix a StackOverflowError in FSDataSet. - (Raghu Angadi via cutting) - - 2. HADOOP-1053. Fix VInt representation of negative values. Also - remove references in generated record code to methods outside of - the record package and improve some record documentation. - (Milind Bhandarkar via cutting) - - 3. HADOOP-1067. Compile fails if Checkstyle jar is present in lib - directory. Also remove dependency on a particular Checkstyle - version number. (tomwhite) - - 4. HADOOP-1060. Fix an IndexOutOfBoundsException in the JobTracker - that could cause jobs to hang. (Arun C Murthy via cutting) - - 5. HADOOP-1077. Fix a race condition fetching map outputs that could - hang reduces. (Devaraj Das via cutting) - - 6. HADOOP-1083. Fix so that when a cluster restarts with a missing - datanode, its blocks are replicated. (Hairong Kuang via cutting) - - 7. HADOOP-1082. Fix a NullPointerException in ChecksumFileSystem. - (Hairong Kuang via cutting) - - 8. HADOOP-1088. Fix record serialization of negative values. - (Milind Bhandarkar via cutting) - - 9. HADOOP-1080. Fix bug in bin/hadoop on Windows when native - libraries are present. (ab via cutting) - -10. HADOOP-1091. Fix a NullPointerException in MetricsRecord. - (David Bowen via tomwhite) - -11. HADOOP-1092. Fix a NullPointerException in HeartbeatMonitor - thread. (Hairong Kuang via tomwhite) - -12. HADOOP-1112. Fix a race condition in Hadoop metrics. - (David Bowen via tomwhite) - -13. HADOOP-1108. Checksummed file system should retry reading if a - different replica is found when handling ChecksumException. - (Hairong Kuang via tomwhite) - -14. HADOOP-1070. Fix a problem with number of racks and datanodes - temporarily doubling. (Konstantin Shvachko via tomwhite) - -15. HADOOP-1099. Fix NullPointerException in JobInProgress. - (Gautam Kowshik via tomwhite) - -16. HADOOP-1115. Fix bug where FsShell copyToLocal doesn't - copy directories. (Hairong Kuang via tomwhite) - -17. HADOOP-1109. Fix NullPointerException in StreamInputFormat. - (Koji Noguchi via tomwhite) - -18. HADOOP-1117. Fix DFS scalability: when the namenode is - restarted it consumes 80% CPU. (Dhruba Borthakur via - tomwhite) - -19. HADOOP-1089. Make the C++ version of write and read v-int - agree with the Java versions. (Milind Bhandarkar via - tomwhite) - -20. HADOOP-1096. Rename InputArchive and OutputArchive and - make them public. (Milind Bhandarkar via tomwhite) - -21. HADOOP-1128. Fix missing progress information in map tasks. - (Espen Amble Kolstad, Andrzej Bialecki, and Owen O'Malley - via tomwhite) - -22. HADOOP-1129. Fix DFSClient to not hide IOExceptions in - flush method. (Hairong Kuang via tomwhite) - -23. HADOOP-1126. Optimize CPU usage for under replicated blocks - when cluster restarts. (Hairong Kuang via tomwhite) - - -Release 0.12.0 - 2007-03-02 - - 1. HADOOP-975. Separate stdout and stderr from tasks. - (Arun C Murthy via cutting) - - 2. HADOOP-982. Add some setters and a toString() method to - BytesWritable. (omalley via cutting) - - 3. HADOOP-858. Move contrib/smallJobsBenchmark to src/test, removing - obsolete bits. (Nigel Daley via cutting) - - 4. HADOOP-992. Fix MiniMR unit tests to use MiniDFS when specified, - rather than the local FS. (omalley via cutting) - - 5. HADOOP-954. Change use of metrics to use callback mechanism. - Also rename utility class Metrics to MetricsUtil. - (David Bowen & Nigel Daley via cutting) - - 6. HADOOP-893. Improve HDFS client's handling of dead datanodes. - The set is no longer reset with each block, but rather is now - maintained for the life of an open file. (Raghu Angadi via cutting) - - 7. HADOOP-882. Upgrade to jets3t version 0.5, used by the S3 - FileSystem. This version supports retries. (Michael Stack via cutting) - - 8. HADOOP-977. Send task's stdout and stderr to JobClient's stdout - and stderr respectively, with each line tagged by the task's name. - (Arun C Murthy via cutting) - - 9. HADOOP-761. Change unit tests to not use /tmp. (Nigel Daley via cutting) - -10. HADOOP-1007. Make names of metrics used in Hadoop unique. - (Nigel Daley via cutting) - -11. HADOOP-491. Change mapred.task.timeout to be per-job, and make a - value of zero mean no timeout. Also change contrib/streaming to - disable task timeouts. (Arun C Murthy via cutting) - -12. HADOOP-1010. Add Reporter.NULL, a Reporter implementation that - does nothing. (Runping Qi via cutting) - -13. HADOOP-923. In HDFS NameNode, move replication computation to a - separate thread, to improve heartbeat processing time. - (Dhruba Borthakur via cutting) - -14. HADOOP-476. Rewrite contrib/streaming command-line processing, - improving parameter validation. (Sanjay Dahiya via cutting) - -15. HADOOP-973. Improve error messages in Namenode. This should help - to track down a problem that was appearing as a - NullPointerException. (Dhruba Borthakur via cutting) - -16. HADOOP-649. Fix so that jobs with no tasks are not lost. - (Thomas Friol via cutting) - -17. HADOOP-803. Reduce memory use by HDFS namenode, phase I. - (Raghu Angadi via cutting) - -18. HADOOP-1021. Fix MRCaching-based unit tests on Windows. - (Nigel Daley via cutting) - -19. HADOOP-889. Remove duplicate code from HDFS unit tests. - (Milind Bhandarkar via cutting) - -20. HADOOP-943. Improve HDFS's fsck command to display the filename - for under-replicated blocks. (Dhruba Borthakur via cutting) - -21. HADOOP-333. Add validator for sort benchmark output. - (Arun C Murthy via cutting) - -22. HADOOP-947. Improve performance of datanode decomissioning. - (Dhruba Borthakur via cutting) - -23. HADOOP-442. Permit one to specify hosts allowed to connect to - namenode and jobtracker with include and exclude files. (Wendy - Chien via cutting) - -24. HADOOP-1017. Cache constructors, for improved performance. - (Ron Bodkin via cutting) - -25. HADOOP-867. Move split creation out of JobTracker to client. - Splits are now saved in a separate file, read by task processes - directly, so that user code is no longer required in the - JobTracker. (omalley via cutting) - -26. HADOOP-1006. Remove obsolete '-local' option from test code. - (Gautam Kowshik via cutting) - -27. HADOOP-952. Create a public (shared) Hadoop EC2 AMI. - The EC2 scripts now support launch of public AMIs. - (tomwhite) - -28. HADOOP-1025. Remove some obsolete code in ipc.Server. (cutting) - -29. HADOOP-997. Implement S3 retry mechanism for failed block - transfers. This includes a generic retry mechanism for use - elsewhere in Hadoop. (tomwhite) - -30. HADOOP-990. Improve HDFS support for full datanode volumes. - (Raghu Angadi via cutting) - -31. HADOOP-564. Replace uses of "dfs://" URIs with the more standard - "hdfs://". (Wendy Chien via cutting) - -32. HADOOP-1030. In unit tests, unify setting of ipc.client.timeout. - Also increase the value used from one to two seconds, in hopes of - making tests complete more reliably. (cutting) - -33. HADOOP-654. Stop assigning tasks to a tasktracker if it has - failed more than a specified number in the job. - (Arun C Murthy via cutting) - -34. HADOOP-985. Change HDFS to identify nodes by IP address rather - than by DNS hostname. (Raghu Angadi via cutting) - -35. HADOOP-248. Optimize location of map outputs to not use random - probes. (Devaraj Das via cutting) - -36. HADOOP-1029. Fix streaming's input format to correctly seek to - the start of splits. (Arun C Murthy via cutting) - -37. HADOOP-492. Add per-job and per-task counters. These are - incremented via the Reporter interface and available through the - web ui and the JobClient API. The mapreduce framework maintains a - few basic counters, and applications may add their own. Counters - are also passed to the metrics system. - (David Bowen via cutting) - -38. HADOOP-1034. Fix datanode to better log exceptions. - (Philippe Gassmann via cutting) - -39. HADOOP-878. In contrib/streaming, fix reducer=NONE to work with - multiple maps. (Arun C Murthy via cutting) - -40. HADOOP-1039. In HDFS's TestCheckpoint, avoid restarting - MiniDFSCluster so often, speeding this test. (Dhruba Borthakur via cutting) - -41. HADOOP-1040. Update RandomWriter example to use counters and - user-defined input and output formats. (omalley via cutting) - -42. HADOOP-1027. Fix problems with in-memory merging during shuffle - and re-enable this optimization. (Devaraj Das via cutting) - -43. HADOOP-1036. Fix exception handling in TaskTracker to keep tasks - from being lost. (Arun C Murthy via cutting) - -44. HADOOP-1042. Improve the handling of failed map output fetches. - (Devaraj Das via cutting) - -45. HADOOP-928. Make checksums optional per FileSystem. - (Hairong Kuang via cutting) - -46. HADOOP-1044. Fix HDFS's TestDecommission to not spuriously fail. - (Wendy Chien via cutting) - -47. HADOOP-972. Optimize HDFS's rack-aware block placement algorithm. - (Hairong Kuang via cutting) - -48. HADOOP-1043. Optimize shuffle, increasing parallelism. - (Devaraj Das via cutting) - -49. HADOOP-940. Improve HDFS's replication scheduling. - (Dhruba Borthakur via cutting) - -50. HADOOP-1020. Fix a bug in Path resolution, and a with unit tests - on Windows. (cutting) - -51. HADOOP-941. Enhance record facility. - (Milind Bhandarkar via cutting) - -52. HADOOP-1000. Fix so that log messages in task subprocesses are - not written to a task's standard error. (Arun C Murthy via cutting) - -53. HADOOP-1037. Fix bin/slaves.sh, which currently only works with - /bin/bash, to specify /bin/bash rather than /bin/sh. (cutting) - -54. HADOOP-1046. Clean up tmp from partially received stale block files. (ab) - -55. HADOOP-1041. Optimize mapred counter implementation. Also group - counters by their declaring Enum. (David Bowen via cutting) - -56. HADOOP-1032. Permit one to specify jars that will be cached - across multiple jobs. (Gautam Kowshik via cutting) - -57. HADOOP-1051. Add optional checkstyle task to build.xml. To use - this developers must download the (LGPL'd) checkstyle jar - themselves. (tomwhite via cutting) - -58. HADOOP-1049. Fix a race condition in IPC client. - (Devaraj Das via cutting) - -60. HADOOP-1056. Check HDFS include/exclude node lists with both IP - address and hostname. (Wendy Chien via cutting) - -61. HADOOP-994. In HDFS, limit the number of blocks invalidated at - once. Large lists were causing datenodes to timeout. - (Dhruba Borthakur via cutting) - -62. HADOOP-432. Add a trash feature, disabled by default. When - enabled, the FSShell 'rm' command will move things to a trash - directory in the filesystem. In HDFS, a thread periodically - checkpoints the trash and removes old checkpoints. (cutting) - - -Release 0.11.2 - 2007-02-16 - - 1. HADOOP-1009. Fix an infinite loop in the HDFS namenode. - (Dhruba Borthakur via cutting) - - 2. HADOOP-1014. Disable in-memory merging during shuffle, as this is - causing data corruption. (Devaraj Das via cutting) - - -Release 0.11.1 - 2007-02-09 - - 1. HADOOP-976. Make SequenceFile.Metadata public. (Runping Qi via cutting) - - 2. HADOOP-917. Fix a NullPointerException in SequenceFile's merger - with large map outputs. (omalley via cutting) - - 3. HADOOP-984. Fix a bug in shuffle error handling introduced by - HADOOP-331. If a map output is unavailable, the job tracker is - once more informed. (Arun C Murthy via cutting) - - 4. HADOOP-987. Fix a problem in HDFS where blocks were not removed - from neededReplications after a replication target was selected. - (Hairong Kuang via cutting) - -Release 0.11.0 - 2007-02-02 - - 1. HADOOP-781. Remove methods deprecated in 0.10 that are no longer - widely used. (cutting) - - 2. HADOOP-842. Change HDFS protocol so that the open() method is - passed the client hostname, to permit the namenode to order block - locations on the basis of network topology. - (Hairong Kuang via cutting) - - 3. HADOOP-852. Add an ant task to compile record definitions, and - use it to compile record unit tests. (Milind Bhandarkar via cutting) - - 4. HADOOP-757. Fix "Bad File Descriptor" exception in HDFS client - when an output file is closed twice. (Raghu Angadi via cutting) - - 5. [ intentionally blank ] - - 6. HADOOP-890. Replace dashes in metric names with underscores, - for better compatibility with some monitoring systems. - (Nigel Daley via cutting) - - 7. HADOOP-801. Add to jobtracker a log of task completion events. - (Sanjay Dahiya via cutting) - - 8. HADOOP-855. In HDFS, try to repair files with checksum errors. - An exception is still thrown, but corrupt blocks are now removed - when they have replicas. (Wendy Chien via cutting) - - 9. HADOOP-886. Reduce number of timer threads created by metrics API - by pooling contexts. (Nigel Daley via cutting) - -10. HADOOP-897. Add a "javac.args" property to build.xml that permits - one to pass arbitrary options to javac. (Milind Bhandarkar via cutting) - -11. HADOOP-899. Update libhdfs for changes in HADOOP-871. - (Sameer Paranjpye via cutting) - -12. HADOOP-905. Remove some dead code from JobClient. (cutting) - -13. HADOOP-902. Fix a NullPointerException in HDFS client when - closing output streams. (Raghu Angadi via cutting) - -14. HADOOP-735. Switch generated record code to use BytesWritable to - represent fields of type 'buffer'. (Milind Bhandarkar via cutting) - -15. HADOOP-830. Improve mapreduce merge performance by buffering and - merging multiple map outputs as they arrive at reduce nodes before - they're written to disk. (Devaraj Das via cutting) - -16. HADOOP-908. Add a new contrib package, Abacus, that simplifies - counting and aggregation, built on MapReduce. (Runping Qi via cutting) - -17. HADOOP-901. Add support for recursive renaming to the S3 filesystem. - (Tom White via cutting) - -18. HADOOP-912. Fix a bug in TaskTracker.isIdle() that was - sporadically causing unit test failures. (Arun C Murthy via cutting) - -19. HADOOP-909. Fix the 'du' command to correctly compute the size of - FileSystem directory trees. (Hairong Kuang via cutting) - -20. HADOOP-731. When a checksum error is encountered on a file stored - in HDFS, try another replica of the data, if any. - (Wendy Chien via cutting) - -21. HADOOP-732. Add support to SequenceFile for arbitrary metadata, - as a set of attribute value pairs. (Runping Qi via cutting) - -22. HADOOP-929. Fix PhasedFileSystem to pass configuration to - underlying FileSystem. (Sanjay Dahiya via cutting) - -23. HADOOP-935. Fix contrib/abacus to not delete pre-existing output - files, but rather to fail in this case. (Runping Qi via cutting) - -24. HADOOP-936. More metric renamings, as in HADOOP-890. - (Nigel Daley via cutting) - -25. HADOOP-856. Fix HDFS's fsck command to not report that - non-existent filesystems are healthy. (Milind Bhandarkar via cutting) - -26. HADOOP-602. Remove the dependency on Lucene's PriorityQueue - utility, by copying it into Hadoop. This facilitates using Hadoop - with different versions of Lucene without worrying about CLASSPATH - order. (Milind Bhandarkar via cutting) - -27. [ intentionally blank ] - -28. HADOOP-227. Add support for backup namenodes, which periodically - get snapshots of the namenode state. (Dhruba Borthakur via cutting) - -29. HADOOP-884. Add scripts in contrib/ec2 to facilitate running - Hadoop on an Amazon's EC2 cluster. (Tom White via cutting) - -30. HADOOP-937. Change the namenode to request re-registration of - datanodes in more circumstances. (Hairong Kuang via cutting) - -31. HADOOP-922. Optimize small forward seeks in HDFS. If data is has - likely already in flight, skip ahead rather than re-opening the - block. (Dhruba Borthakur via cutting) - -32. HADOOP-961. Add a 'job -events' sub-command that prints job - events, including task completions and failures. (omalley via cutting) - -33. HADOOP-959. Fix namenode snapshot code added in HADOOP-227 to - work on Windows. (Dhruba Borthakur via cutting) - -34. HADOOP-934. Fix TaskTracker to catch metrics exceptions that were - causing heartbeats to fail. (Arun Murthy via cutting) - -35. HADOOP-881. Fix JobTracker web interface to display the correct - number of task failures. (Sanjay Dahiya via cutting) - -36. HADOOP-788. Change contrib/streaming to subclass TextInputFormat, - permitting it to take advantage of native compression facilities. - (Sanjay Dahiya via cutting) - -37. HADOOP-962. In contrib/ec2: make scripts executable in tar file; - add a README; make the environment file use a template. - (Tom White via cutting) - -38. HADOOP-549. Fix a NullPointerException in TaskReport's - serialization. (omalley via cutting) - -39. HADOOP-963. Fix remote exceptions to have the stack trace of the - caller thread, not the IPC listener thread. (omalley via cutting) - -40. HADOOP-967. Change RPC clients to start sending a version header. - (omalley via cutting) - -41. HADOOP-964. Fix a bug introduced by HADOOP-830 where jobs failed - whose comparators and/or i/o types were in the job's jar. - (Dennis Kubes via cutting) - -42. HADOOP-969. Fix a deadlock in JobTracker. (omalley via cutting) - -43. HADOOP-862. Add support for the S3 FileSystem to the CopyFiles - tool. (Michael Stack via cutting) - -44. HADOOP-965. Fix IsolationRunner so that job's jar can be found. - (Dennis Kubes via cutting) - -45. HADOOP-309. Fix two NullPointerExceptions in StatusHttpServer. - (navychen via cutting) - -46. HADOOP-692. Add rack awareness to HDFS's placement of blocks. - (Hairong Kuang via cutting) - - -Release 0.10.1 - 2007-01-10 - - 1. HADOOP-857. Fix S3 FileSystem implementation to permit its use - for MapReduce input and output. (Tom White via cutting) - - 2. HADOOP-863. Reduce logging verbosity introduced by HADOOP-813. - (Devaraj Das via cutting) - - 3. HADOOP-815. Fix memory leaks in JobTracker. (Arun C Murthy via cutting) - - 4. HADOOP-600. Fix a race condition in JobTracker. - (Arun C Murthy via cutting) - - 5. HADOOP-864. Fix 'bin/hadoop -jar' to operate correctly when - hadoop.tmp.dir does not yet exist. (omalley via cutting) - - 6. HADOOP-866. Fix 'dfs -get' command to remove existing crc files, - if any. (Milind Bhandarkar via cutting) - - 7. HADOOP-871. Fix a bug in bin/hadoop setting JAVA_LIBRARY_PATH. - (Arun C Murthy via cutting) - - 8. HADOOP-868. Decrease the number of open files during map, - respecting io.sort.fa ctor. (Devaraj Das via cutting) - - 9. HADOOP-865. Fix S3 FileSystem so that partially created files can - be deleted. (Tom White via cutting) - -10. HADOOP-873. Pass java.library.path correctly to child processes. - (omalley via cutting) - -11. HADOOP-851. Add support for the LZO codec. This is much faster - than the default, zlib-based compression, but it is only available - when the native library is built. (Arun C Murthy via cutting) - -12. HADOOP-880. Fix S3 FileSystem to remove directories. - (Tom White via cutting) - -13. HADOOP-879. Fix InputFormatBase to handle output generated by - MapFileOutputFormat. (cutting) - -14. HADOOP-659. In HDFS, prioritize replication of blocks based on - current replication level. Blocks which are severely - under-replicated should be further replicated before blocks which - are less under-replicated. (Hairong Kuang via cutting) - -15. HADOOP-726. Deprecate FileSystem locking methods. They are not - currently usable. Locking should eventually provided as an - independent service. (Raghu Angadi via cutting) - -16. HADOOP-758. Fix exception handling during reduce so that root - exceptions are not masked by exceptions in cleanups. - (Raghu Angadi via cutting) - - -Release 0.10.0 - 2007-01-05 - - 1. HADOOP-763. Change DFS namenode benchmark to not use MapReduce. - (Nigel Daley via cutting) - - 2. HADOOP-777. Use fully-qualified hostnames for tasktrackers and - datanodes. (Mahadev Konar via cutting) - - 3. HADOOP-621. Change 'dfs -cat' to exit sooner when output has been - closed. (Dhruba Borthakur via cutting) - - 4. HADOOP-752. Rationalize some synchronization in DFS namenode. - (Dhruba Borthakur via cutting) - - 5. HADOOP-629. Fix RPC services to better check the protocol name and - version. (omalley via cutting) - - 6. HADOOP-774. Limit the number of invalid blocks returned with - heartbeats by the namenode to datanodes. Transmitting and - processing very large invalid block lists can tie up both the - namenode and datanode for too long. (Dhruba Borthakur via cutting) - - 7. HADOOP-738. Change 'dfs -get' command to not create CRC files by - default, adding a -crc option to force their creation. - (Milind Bhandarkar via cutting) - - 8. HADOOP-676. Improved exceptions and error messages for common job - input specification errors. (Sanjay Dahiya via cutting) - - 9. [Included in 0.9.2 release] - -10. HADOOP-756. Add new dfsadmin option to wait for filesystem to be - operational. (Dhruba Borthakur via cutting) - -11. HADOOP-770. Fix jobtracker web interface to display, on restart, - jobs that were running when it was last stopped. - (Sanjay Dahiya via cutting) - -12. HADOOP-331. Write all map outputs to a single file with an index, - rather than to a separate file per reduce task. This should both - speed the shuffle and make things more scalable. - (Devaraj Das via cutting) - -13. HADOOP-818. Fix contrib unit tests to not depend on core unit - tests. (omalley via cutting) - -14. HADOOP-786. Log common exception at debug level. - (Sanjay Dahiya via cutting) - -15. HADOOP-796. Provide more convenient access to failed task - information in the web interface. (Sanjay Dahiya via cutting) - -16. HADOOP-764. Reduce memory allocations in namenode some. - (Dhruba Borthakur via cutting) - -17. HADOOP-802. Update description of mapred.speculative.execution to - mention reduces. (Nigel Daley via cutting) - -18. HADOOP-806. Include link to datanodes on front page of namenode - web interface. (Raghu Angadi via cutting) - -19. HADOOP-618. Make JobSubmissionProtocol public. - (Arun C Murthy via cutting) - -20. HADOOP-782. Fully remove killed tasks. (Arun C Murthy via cutting) - -21. HADOOP-792. Fix 'dfs -mv' to return correct status. - (Dhruba Borthakur via cutting) - -22. HADOOP-673. Give each task its own working directory again. - (Mahadev Konar via cutting) - -23. HADOOP-571. Extend the syntax of Path to be a URI; to be - optionally qualified with a scheme and authority. The scheme - determines the FileSystem implementation, while the authority - determines the FileSystem instance. New FileSystem - implementations may be provided by defining an fs.<scheme>.impl - property, naming the FileSystem implementation class. This - permits easy integration of new FileSystem implementations. - (cutting) - -24. HADOOP-720. Add an HDFS white paper to website. - (Dhruba Borthakur via cutting) - -25. HADOOP-794. Fix a divide-by-zero exception when a job specifies - zero map tasks. (omalley via cutting) - -26. HADOOP-454. Add a 'dfs -dus' command that provides summary disk - usage. (Hairong Kuang via cutting) - -27. HADOOP-574. Add an Amazon S3 implementation of FileSystem. To - use this, one need only specify paths of the form - s3://id:secret@bucket/. Alternately, the AWS access key id and - secret can be specified in your config, with the properties - fs.s3.awsAccessKeyId and fs.s3.awsSecretAccessKey. - (Tom White via cutting) - -28. HADOOP-824. Rename DFSShell to be FsShell, since it applies - generically to all FileSystem implementations. (cutting) - -29. HADOOP-813. Fix map output sorting to report progress, so that - sorts which take longer than the task timeout do not fail. - (Devaraj Das via cutting) - -30. HADOOP-825. Fix HDFS daemons when configured with new URI syntax. - (omalley via cutting) - -31. HADOOP-596. Fix a bug in phase reporting during reduce. - (Sanjay Dahiya via cutting) - -32. HADOOP-811. Add a utility, MultithreadedMapRunner. - (Alejandro Abdelnur via cutting) - -33. HADOOP-829. Within HDFS, clearly separate three different - representations for datanodes: one for RPCs, one for - namenode-internal use, and one for namespace persistence. - (Dhruba Borthakur via cutting) - -34. HADOOP-823. Fix problem starting datanode when not all configured - data directories exist. (Bryan Pendleton via cutting) - -35. HADOOP-451. Add a Split interface. CAUTION: This incompatibly - changes the InputFormat and RecordReader interfaces. Not only is - FileSplit replaced with Split, but a FileSystem parameter is no - longer passed in several methods, input validation has changed, - etc. (omalley via cutting) - -36. HADOOP-814. Optimize locking in namenode. (Dhruba Borthakur via cutting) - -37. HADOOP-738. Change 'fs -put' and 'fs -get' commands to accept - standard input and output, respectively. Standard i/o is - specified by a file named '-'. (Wendy Chien via cutting) - -38. HADOOP-835. Fix a NullPointerException reading record-compressed - SequenceFiles. (Hairong Kuang via cutting) - -39. HADOOP-836. Fix a MapReduce bug on Windows, where the wrong - FileSystem was used. Also add a static FileSystem.getLocal() - method and better Path checking in HDFS, to help avoid such issues - in the future. (omalley via cutting) - -40. HADOOP-837. Improve RunJar utility to unpack jar file - hadoop.tmp.dir, rather than the system temporary directory. - (Hairong Kuang via cutting) - -41. HADOOP-841. Fix native library to build 32-bit version even when - on a 64-bit host, if a 32-bit JVM is used. (Arun C Murthy via cutting) - -42. HADOOP-838. Fix tasktracker to pass java.library.path to - sub-processes, so that libhadoop.a is found. - (Arun C Murthy via cutting) - -43. HADOOP-844. Send metrics messages on a fixed-delay schedule - instead of a fixed-rate schedule. (David Bowen via cutting) - -44. HADOOP-849. Fix OutOfMemory exceptions in TaskTracker due to a - file handle leak in SequenceFile. (Devaraj Das via cutting) - -45. HADOOP-745. Fix a synchronization bug in the HDFS namenode. - (Dhruba Borthakur via cutting) - -46. HADOOP-850. Add Writable implementations for variable-length - integers. (ab via cutting) - -47. HADOOP-525. Add raw comparators to record types. This greatly - improves record sort performance. (Milind Bhandarkar via cutting) - -48. HADOOP-628. Fix a problem with 'fs -cat' command, where some - characters were replaced with question marks. (Wendy Chien via cutting) - -49. HADOOP-804. Reduce verbosity of MapReduce logging. - (Sanjay Dahiya via cutting) - -50. HADOOP-853. Rename 'site' to 'docs', in preparation for inclusion - in releases. (cutting) - -51. HADOOP-371. Include contrib jars and site documentation in - distributions. Also add contrib and example documentation to - distributed javadoc, in separate sections. (Nigel Daley via cutting) - -52. HADOOP-846. Report progress during entire map, as sorting of - intermediate outputs may happen at any time, potentially causing - task timeouts. (Devaraj Das via cutting) - -53. HADOOP-840. In task tracker, queue task cleanups and perform them - in a separate thread. (omalley & Mahadev Konar via cutting) - -54. HADOOP-681. Add to HDFS the ability to decommission nodes. This - causes their blocks to be re-replicated on other nodes, so that - they may be removed from a cluster. (Dhruba Borthakur via cutting) - -55. HADOOP-470. In HDFS web ui, list the datanodes containing each - copy of a block. (Hairong Kuang via cutting) - -56. HADOOP-700. Change bin/hadoop to only include core jar file on - classpath, not example, test, etc. Also rename core jar to - hadoop-${version}-core.jar so that it can be more easily - identified. (Nigel Daley via cutting) - -57. HADOOP-619. Extend InputFormatBase to accept individual files and - glob patterns as MapReduce inputs, not just directories. Also - change contrib/streaming to use this. (Sanjay Dahia via cutting) - - -Release 0.9.2 - 2006-12-15 - - 1. HADOOP-639. Restructure InterTrackerProtocol to make task - accounting more reliable. (Arun C Murthy via cutting) - - 2. HADOOP-827. Turn off speculative execution by default, since it's - currently broken. (omalley via cutting) - - 3. HADOOP-791. Fix a deadlock in the task tracker. - (Mahadev Konar via cutting) - - -Release 0.9.1 - 2006-12-06 - - 1. HADOOP-780. Use ReflectionUtils to instantiate key and value - objects. (ab) - - 2. HADOOP-779. Fix contrib/streaming to work correctly with gzipped - input files. (Hairong Kuang via cutting) - - -Release 0.9.0 - 2006-12-01 - - 1. HADOOP-655. Remove most deprecated code. A few deprecated things - remain, notably UTF8 and some methods that are still required. - Also cleaned up constructors for SequenceFile, MapFile, SetFile, - and ArrayFile a bit. (cutting) - - 2. HADOOP-565. Upgrade to Jetty version 6. (Sanjay Dahiya via cutting) - - 3. HADOOP-682. Fix DFS format command to work correctly when - configured with a non-existent directory. (Sanjay Dahiya via cutting) - - 4. HADOOP-645. Fix a bug in contrib/streaming when -reducer is NONE. - (Dhruba Borthakur via cutting) - - 5. HADOOP-687. Fix a classpath bug in bin/hadoop that blocked the - servers from starting. (Sameer Paranjpye via omalley) - - 6. HADOOP-683. Remove a script dependency on bash, so it works with - dash, the new default for /bin/sh on Ubuntu. (James Todd via cutting) - - 7. HADOOP-382. Extend unit tests to run multiple datanodes. - (Milind Bhandarkar via cutting) - - 8. HADOOP-604. Fix some synchronization issues and a - NullPointerException in DFS datanode. (Raghu Angadi via cutting) - - 9. HADOOP-459. Fix memory leaks and a host of other issues with - libhdfs. (Sameer Paranjpye via cutting) - -10. HADOOP-694. Fix a NullPointerException in jobtracker. - (Mahadev Konar via cutting) - -11. HADOOP-637. Fix a memory leak in the IPC server. Direct buffers - are not collected like normal buffers, and provided little - advantage. (Raghu Angadi via cutting) - -12. HADOOP-696. Fix TestTextInputFormat unit test to not rely on the - order of directory listings. (Sameer Paranjpye via cutting) - -13. HADOOP-611. Add support for iterator-based merging to - SequenceFile. (Devaraj Das via cutting) - -14. HADOOP-688. Move DFS administrative commands to a separate - command named 'dfsadmin'. (Dhruba Borthakur via cutting) - -15. HADOOP-708. Fix test-libhdfs to return the correct status, so - that failures will break the build. (Nigel Daley via cutting) - -16. HADOOP-646. Fix namenode to handle edits files larger than 2GB. - (Milind Bhandarkar via cutting) - -17. HADOOP-705. Fix a bug in the JobTracker when failed jobs were - not completely cleaned up. (Mahadev Konar via cutting) - -18. HADOOP-613. Perform final merge while reducing. This removes one - sort pass over the data and should consequently significantly - decrease overall processing time. (Devaraj Das via cutting) - -19. HADOOP-661. Make each job's configuration visible through the web - ui. (Arun C Murthy via cutting) - -20. HADOOP-489. In MapReduce, separate user logs from system logs. - Each task's log output is now available through the web ui. (Arun - C Murthy via cutting) - -21. HADOOP-712. Fix record io's xml serialization to correctly handle - control-characters. (Milind Bhandarkar via cutting) - -22. HADOOP-668. Improvements to the web-based DFS browser. - (Hairong Kuang via cutting) - -23. HADOOP-715. Fix build.xml so that test logs are written in build - directory, rather than in CWD. (Arun C Murthy via cutting) - -24. HADOOP-538. Add support for building an optional native library, - libhadoop.so, that improves the performance of zlib-based - compression. To build this, specify -Dcompile.native to Ant. - (Arun C Murthy via cutting) - -25. HADOOP-610. Fix an problem when the DFS block size is configured - to be smaller than the buffer size, typically only when debugging. - (Milind Bhandarkar via cutting) - -26. HADOOP-695. Fix a NullPointerException in contrib/streaming. - (Hairong Kuang via cutting) - -27. HADOOP-652. In DFS, when a file is deleted, the block count is - now decremented. (Vladimir Krokhmalyov via cutting) - -28. HADOOP-725. In DFS, optimize block placement algorithm, - previously a performance bottleneck. (Milind Bhandarkar via cutting) - -29. HADOOP-723. In MapReduce, fix a race condition during the - shuffle, which resulted in FileNotFoundExceptions. (omalley via cutting) - -30. HADOOP-447. In DFS, fix getBlockSize(Path) to work with relative - paths. (Raghu Angadi via cutting) - -31. HADOOP-733. Make exit codes in DFShell consistent and add a unit - test. (Dhruba Borthakur via cutting) - -32. HADOOP-709. Fix contrib/streaming to work with commands that - contain control characters. (Dhruba Borthakur via cutting) - -33. HADOOP-677. In IPC, permit a version header to be transmitted - when connections are established. This will permit us to change - the format of IPC requests back-compatibly in subsequent releases. - (omalley via cutting) - -34. HADOOP-699. Fix DFS web interface so that filesystem browsing - works correctly, using the right port number. Also add support - for sorting datanode list by various columns. - (Raghu Angadi via cutting) - -35. HADOOP-76. Implement speculative reduce. Now when a job is - configured for speculative execution, both maps and reduces will - execute speculatively. Reduce outputs are written to temporary - location and moved to the final location when reduce is complete. - (Sanjay Dahiya via cutting) - -36. HADOOP-736. Roll back to Jetty 5.1.4, due to performance problems - with Jetty 6.0.1. - -37. HADOOP-739. Fix TestIPC to use different port number, making it - more reliable. (Nigel Daley via cutting) - -38. HADOOP-749. Fix a NullPointerException in jobfailures.jsp. - (omalley via cutting) - -39. HADOOP-747. Fix record serialization to work correctly when - records are embedded in Maps. (Milind Bhandarkar via cutting) - -40. HADOOP-698. Fix HDFS client not to retry the same datanode on - read failures. (Milind Bhandarkar via cutting) - -41. HADOOP-689. Add GenericWritable, to facilitate polymorphism in - MapReduce, SequenceFile, etc. (Feng Jiang via cutting) - -42. HADOOP-430. Stop datanode's HTTP server when registration with - namenode fails. (Wendy Chien via cutting) - -43. HADOOP-750. Fix a potential race condition during mapreduce - shuffle. (omalley via cutting) - -44. HADOOP-728. Fix contrib/streaming-related issues, including - '-reducer NONE'. (Sanjay Dahiya via cutting) - - -Release 0.8.0 - 2006-11-03 - - 1. HADOOP-477. Extend contrib/streaming to scan the PATH environment - variables when resolving executable program names. - (Dhruba Borthakur via cutting) - - 2. HADOOP-583. In DFSClient, reduce the log level of re-connect - attempts from 'info' to 'debug', so they are not normally shown. - (Konstantin Shvachko via cutting) - - 3. HADOOP-498. Re-implement DFS integrity checker to run server-side, - for much improved performance. (Milind Bhandarkar via cutting) - - 4. HADOOP-586. Use the jar name for otherwise un-named jobs. - (Sanjay Dahiya via cutting) - - 5. HADOOP-514. Make DFS heartbeat interval configurable. - (Milind Bhandarkar via cutting) - - 6. HADOOP-588. Fix logging and accounting of failed tasks. - (Sanjay Dahiya via cutting) - - 7. HADOOP-462. Improve command line parsing in DFSShell, so that - incorrect numbers of arguments result in informative errors rather - than ArrayOutOfBoundsException. (Dhruba Borthakur via cutting) - - 8. HADOOP-561. Fix DFS so that one replica of each block is written - locally, if possible. This was the intent, but there as a bug. - (Dhruba Borthakur via cutting) - - 9. HADOOP-610. Fix TaskTracker to survive more exceptions, keeping - tasks from becoming lost. (omalley via cutting) - -10. HADOOP-625. Add a servlet to all http daemons that displays a - stack dump, useful for debugging. (omalley via cutting) - -11. HADOOP-554. Fix DFSShell to return -1 for errors. - (Dhruba Borthakur via cutting) - -12. HADOOP-626. Correct the documentation in the NNBench example - code, and also remove a mistaken call there. - (Nigel Daley via cutting) - -13. HADOOP-634. Add missing license to many files. - (Nigel Daley via cutting) - -14. HADOOP-627. Fix some synchronization problems in MiniMRCluster - that sometimes caused unit tests to fail. (Nigel Daley via cutting) - -15. HADOOP-563. Improve the NameNode's lease policy so that leases - are held for one hour without renewal (instead of one minute). - However another attempt to create the same file will still succeed - if the lease has not been renewed within a minute. This prevents - communication or scheduling problems from causing a write to fail - for up to an hour, barring some other process trying to create the - same file. (Dhruba Borthakur via cutting) - -16. HADOOP-635. In DFSShell, permit specification of multiple files - as the source for file copy and move commands. - (Dhruba Borthakur via cutting) - -17. HADOOP-641. Change NameNode to request a fresh block report from - a re-discovered DataNode, so that no-longer-needed replications - are stopped promptly. (Konstantin Shvachko via cutting) - -18. HADOOP-642. Change IPC client to specify an explicit connect - timeout. (Konstantin Shvachko via cutting) - -19. HADOOP-638. Fix an unsynchronized access to TaskTracker's - internal state. (Nigel Daley via cutting) - -20. HADOOP-624. Fix servlet path to stop a Jetty warning on startup. - (omalley via cutting) - -21. HADOOP-578. Failed tasks are no longer placed at the end of the - task queue. This was originally done to work around other - problems that have now been fixed. Re-executing failed tasks - sooner causes buggy jobs to fail faster. (Sanjay Dahiya via cutting) - -22. HADOOP-658. Update source file headers per Apache policy. (cutting) - -23. HADOOP-636. Add MapFile & ArrayFile constructors which accept a - Progressable, and pass it down to SequenceFile. This permits - reduce tasks which use MapFile to still report progress while - writing blocks to the filesystem. (cutting) - -24. HADOOP-576. Enable contrib/streaming to use the file cache. Also - extend the cache to permit symbolic links to cached items, rather - than local file copies. (Mahadev Konar via cutting) - -25. HADOOP-482. Fix unit tests to work when a cluster is running on - the same machine, removing port conflicts. (Wendy Chien via cutting) - -26. HADOOP-90. Permit dfs.name.dir to list multiple directories, - where namenode data is to be replicated. (Milind Bhandarkar via cutting) - -27. HADOOP-651. Fix DFSCk to correctly pass parameters to the servlet - on the namenode. (Milind Bhandarkar via cutting) - -28. HADOOP-553. Change main() routines of DataNode and NameNode to - log exceptions rather than letting the JVM print them to standard - error. Also, change the hadoop-daemon.sh script to rotate - standard i/o log files. (Raghu Angadi via cutting) - -29. HADOOP-399. Fix javadoc warnings. (Nigel Daley via cutting) - -30. HADOOP-599. Fix web ui and command line to correctly report DFS - filesystem size statistics. Also improve web layout. - (Raghu Angadi via cutting) - -31. HADOOP-660. Permit specification of junit test output format. - (Nigel Daley via cutting) - -32. HADOOP-663. Fix a few unit test issues. (Mahadev Konar via cutting) - -33. HADOOP-664. Cause entire build to fail if libhdfs tests fail. - (Nigel Daley via cutting) - -34. HADOOP-633. Keep jobtracker from dying when job initialization - throws exceptions. Also improve exception handling in a few other - places and add more informative thread names. - (omalley via cutting) - -35. HADOOP-669. Fix a problem introduced by HADOOP-90 that can cause - DFS to lose files. (Milind Bhandarkar via cutting) - -36. HADOOP-373. Consistently check the value returned by - FileSystem.mkdirs(). (Wendy Chien via cutting) - -37. HADOOP-670. Code cleanups in some DFS internals: use generic - types, replace Vector with ArrayList, etc. - (Konstantin Shvachko via cutting) - -38. HADOOP-647. Permit map outputs to use a different compression - type than the job output. (omalley via cutting) - -39. HADOOP-671. Fix file cache to check for pre-existence before - creating . (Mahadev Konar via cutting) - -40. HADOOP-665. Extend many DFSShell commands to accept multiple - arguments. Now commands like "ls", "rm", etc. will operate on - multiple files. (Dhruba Borthakur via cutting) - - -Release 0.7.2 - 2006-10-18 - - 1. HADOOP-607. Fix a bug where classes included in job jars were not - found by tasks. (Mahadev Konar via cutting) - - 2. HADOOP-609. Add a unit test that checks that classes in job jars - can be found by tasks. Also modify unit tests to specify multiple - local directories. (Mahadev Konar via cutting) - - -Release 0.7.1 - 2006-10-11 - - 1. HADOOP-593. Fix a NullPointerException in the JobTracker. - (omalley via cutting) - - 2. HADOOP-592. Fix a NullPointerException in the IPC Server. Also - consistently log when stale calls are discarded. (omalley via cutting) - - 3. HADOOP-594. Increase the DFS safe-mode threshold from .95 to - .999, so that nearly all blocks must be reported before filesystem - modifications are permitted. (Konstantin Shvachko via cutting) - - 4. HADOOP-598. Fix tasks to retry when reporting completion, so that - a single RPC timeout won't fail a task. (omalley via cutting) - - 5. HADOOP-597. Fix TaskTracker to not discard map outputs for errors - in transmitting them to reduce nodes. (omalley via cutting) - - -Release 0.7.0 - 2006-10-06 - - 1. HADOOP-243. Fix rounding in the display of task and job progress - so that things are not shown to be 100% complete until they are in - fact finished. (omalley via cutting) - - 2. HADOOP-438. Limit the length of absolute paths in DFS, since the - file format used to store pathnames has some limitations. - (Wendy Chien via cutting) - - 3. HADOOP-530. Improve error messages in SequenceFile when keys or - values are of the wrong type. (Hairong Kuang via cutting) - - 4. HADOOP-288. Add a file caching system and use it in MapReduce to - cache job jar files on slave nodes. (Mahadev Konar via cutting) - - 5. HADOOP-533. Fix unit test to not modify conf directory. - (Hairong Kuang via cutting) - - 6. HADOOP-527. Permit specification of the local address that various - Hadoop daemons should bind to. (Philippe Gassmann via cutting) - - 7. HADOOP-542. Updates to contrib/streaming: reformatted source code, - on-the-fly merge sort, a fix for HADOOP-540, etc. - (Michel Tourn via cutting) - - 8. HADOOP-545. Remove an unused config file parameter. - (Philippe Gassmann via cutting) - - 9. HADOOP-548. Add an Ant property "test.output" to build.xml that - causes test output to be logged to the console. (omalley via cutting) - -10. HADOOP-261. Record an error message when map output is lost. - (omalley via cutting) - -11. HADOOP-293. Report the full list of task error messages in the - web ui, not just the most recent. (omalley via cutting) - -12. HADOOP-551. Restore JobClient's console printouts to only include - a maximum of one update per one percent of progress. - (omalley via cutting) - -13. HADOOP-306. Add a "safe" mode to DFS. The name node enters this - when less than a specified percentage of file data is complete. - Currently safe mode is only used on startup, but eventually it - will also be entered when datanodes disconnect and file data - becomes incomplete. While in safe mode no filesystem - modifications are permitted and block replication is inhibited. - (Konstantin Shvachko via cutting) - -14. HADOOP-431. Change 'dfs -rm' to not operate recursively and add a - new command, 'dfs -rmr' which operates recursively. - (Sameer Paranjpye via cutting) - -15. HADOOP-263. Include timestamps for job transitions. The web - interface now displays the start and end times of tasks and the - start times of sorting and reducing for reduce tasks. Also, - extend ObjectWritable to handle enums, so that they can be passed - as RPC parameters. (Sanjay Dahiya via cutting) - -16. HADOOP-556. Contrib/streaming: send keep-alive reports to task - tracker every 10 seconds rather than every 100 records, to avoid - task timeouts. (Michel Tourn via cutting) - -17. HADOOP-547. Fix reduce tasks to ping tasktracker while copying - data, rather than only between copies, avoiding task timeouts. - (Sanjay Dahiya via cutting) - -18. HADOOP-537. Fix src/c++/libhdfs build process to create files in - build/, no longer modifying the source tree. - (Arun C Murthy via cutting) - -19. HADOOP-487. Throw a more informative exception for unknown RPC - hosts. (Sameer Paranjpye via cutting) - -20. HADOOP-559. Add file name globbing (pattern matching) support to - the FileSystem API, and use it in DFSShell ('bin/hadoop dfs') - commands. (Hairong Kuang via cutting) - -21. HADOOP-508. Fix a bug in FSDataInputStream. Incorrect data was - returned after seeking to a random location. - (Milind Bhandarkar via cutting) - -22. HADOOP-560. Add a "killed" task state. This can be used to - distinguish kills from other failures. Task state has also been - converted to use an enum type instead of an int, uncovering a bug - elsewhere. The web interface is also updated to display killed - tasks. (omalley via cutting) - -23. HADOOP-423. Normalize Paths containing directories named "." and - "..", using the standard, unix interpretation. Also add checks in - DFS, prohibiting the use of "." or ".." as directory or file - names. (Wendy Chien via cutting) - -24. HADOOP-513. Replace map output handling with a servlet, rather - than a JSP page. This fixes an issue where - IllegalStateException's were logged, sets content-length - correctly, and better handles some errors. (omalley via cutting) - -25. HADOOP-552. Improved error checking when copying map output files - to reduce nodes. (omalley via cutting) - -26. HADOOP-566. Fix scripts to work correctly when accessed through - relative symbolic links. (Lee Faris via cutting) - -27. HADOOP-519. Add positioned read methods to FSInputStream. These - permit one to read from a stream without moving its position, and - can hence be performed by multiple threads at once on a single - stream. Implement an optimized version for DFS and local FS. - (Milind Bhandarkar via cutting) - -28. HADOOP-522. Permit block compression with MapFile and SetFile. - Since these formats are always sorted, block compression can - provide a big advantage. (cutting) - -29. HADOOP-567. Record version and revision information in builds. A - package manifest is added to the generated jar file containing - version information, and a VersionInfo utility is added that - includes further information, including the build date and user, - and the subversion revision and repository. A 'bin/hadoop - version' comand is added to show this information, and it is also - added to various web interfaces. (omalley via cutting) - -30. HADOOP-568. Fix so that errors while initializing tasks on a - tasktracker correctly report the task as failed to the jobtracker, - so that it will be rescheduled. (omalley via cutting) - -31. HADOOP-550. Disable automatic UTF-8 validation in Text. This - permits, e.g., TextInputFormat to again operate on non-UTF-8 data. - (Hairong and Mahadev via cutting) - -32. HADOOP-343. Fix mapred copying so that a failed tasktracker - doesn't cause other copies to slow. (Sameer Paranjpye via cutting) - -33. HADOOP-239. Add a persistent job history mechanism, so that basic - job statistics are not lost after 24 hours and/or when the - jobtracker is restarted. (Sanjay Dahiya via cutting) - -34. HADOOP-506. Ignore heartbeats from stale task trackers. - (Sanjay Dahiya via cutting) - -35. HADOOP-255. Discard stale, queued IPC calls. Do not process - calls whose clients will likely time out before they receive a - response. When the queue is full, new calls are now received and - queued, and the oldest calls are discarded, so that, when servers - get bogged down, they no longer develop a backlog on the socket. - This should improve some DFS namenode failure modes. - (omalley via cutting) - -36. HADOOP-581. Fix datanode to not reset itself on communications - errors with the namenode. If a request to the namenode fails, the - datanode should retry, not restart. This reduces the load on the - namenode, since restarts cause a resend of the block report. - (omalley via cutting) - - -Release 0.6.2 - 2006-09-18 - -1. HADOOP-532. Fix a bug reading value-compressed sequence files, - where an exception was thrown reporting that the full value had not - been read. (omalley via cutting) - -2. HADOOP-534. Change the default value class in JobConf to be Text - instead of the now-deprecated UTF8. This fixes the Grep example - program, which was updated to use Text, but relies on this - default. (Hairong Kuang via cutting) - - -Release 0.6.1 - 2006-09-13 - - 1. HADOOP-520. Fix a bug in libhdfs, where write failures were not - correctly returning error codes. (Arun C Murthy via cutting) - - 2. HADOOP-523. Fix a NullPointerException when TextInputFormat is - explicitly specified. Also add a test case for this. - (omalley via cutting) - - 3. HADOOP-521. Fix another NullPointerException finding the - ClassLoader when using libhdfs. (omalley via cutting) - - 4. HADOOP-526. Fix a NullPointerException when attempting to start - two datanodes in the same directory. (Milind Bhandarkar via cutting) - - 5. HADOOP-529. Fix a NullPointerException when opening - value-compressed sequence files generated by pre-0.6.0 Hadoop. - (omalley via cutting) - - -Release 0.6.0 - 2006-09-08 - - 1. HADOOP-427. Replace some uses of DatanodeDescriptor in the DFS - web UI code with DatanodeInfo, the preferred public class. - (Devaraj Das via cutting) - - 2. HADOOP-426. Fix streaming contrib module to work correctly on - Solaris. This was causing nightly builds to fail. - (Michel Tourn via cutting) - - 3. HADOOP-400. Improvements to task assignment. Tasks are no longer - re-run on nodes where they have failed (unless no other node is - available). Also, tasks are better load-balanced among nodes. - (omalley via cutting) - - 4. HADOOP-324. Fix datanode to not exit when a disk is full, but - rather simply to fail writes. (Wendy Chien via cutting) - - 5. HADOOP-434. Change smallJobsBenchmark to use standard Hadoop - scripts. (Sanjay Dahiya via cutting) - - 6. HADOOP-453. Fix a bug in Text.setCapacity(). (siren via cutting) - - - 7. HADOOP-450. Change so that input types are determined by the - RecordReader rather than specified directly in the JobConf. This - facilitates jobs with a variety of input types. - - WARNING: This contains incompatible API changes! The RecordReader - interface has two new methods that all user-defined InputFormats - must now define. Also, the values returned by TextInputFormat are - no longer of class UTF8, but now of class Text. - - 8. HADOOP-436. Fix an error-handling bug in the web ui. - (Devaraj Das via cutting) - - 9. HADOOP-455. Fix a bug in Text, where DEL was not permitted. - (Hairong Kuang via cutting) - -10. HADOOP-456. Change the DFS namenode to keep a persistent record - of the set of known datanodes. This will be used to implement a - "safe mode" where filesystem changes are prohibited when a - critical percentage of the datanodes are unavailable. - (Konstantin Shvachko via cutting) - -11. HADOOP-322. Add a job control utility. This permits one to - specify job interdependencies. Each job is submitted only after - the jobs it depends on have successfully completed. - (Runping Qi via cutting) - -12. HADOOP-176. Fix a bug in IntWritable.Comparator. - (Dick King via cutting) - -13. HADOOP-421. Replace uses of String in recordio package with Text - class, for improved handling of UTF-8 data. - (Milind Bhandarkar via cutting) - -14. HADOOP-464. Improved error message when job jar not found. - (Michel Tourn via cutting) - -15. HADOOP-469. Fix /bin/bash specifics that have crept into our - /bin/sh scripts since HADOOP-352. - (Jean-Baptiste Quenot via cutting) - -16. HADOOP-468. Add HADOOP_NICENESS environment variable to set - scheduling priority for daemons. (Vetle Roeim via cutting) - -17. HADOOP-473. Fix TextInputFormat to correctly handle more EOL - formats. Things now work correctly with CR, LF or CRLF. - (Dennis Kubes & James White via cutting) - -18. HADOOP-461. Make Java 1.5 an explicit requirement. (cutting) - -19. HADOOP-54. Add block compression to SequenceFile. One may now - specify that blocks of keys and values are compressed together, - improving compression for small keys and values. - SequenceFile.Writer's constructor is now deprecated and replaced - with a factory method. (Arun C Murthy via cutting) - -20. HADOOP-281. Prohibit DFS files that are also directories. - (Wendy Chien via cutting) - -21. HADOOP-486. Add the job username to JobStatus instances returned - by JobClient. (Mahadev Konar via cutting) - -22. HADOOP-437. contrib/streaming: Add support for gzipped inputs. - (Michel Tourn via cutting) - -23. HADOOP-463. Add variable expansion to config files. - Configuration property values may now contain variable - expressions. A variable is referenced with the syntax - '${variable}'. Variables values are found first in the - configuration, and then in Java system properties. The default - configuration is modified so that temporary directories are now - under ${hadoop.tmp.dir}, which is, by default, - /tmp/hadoop-${user.name}. (Michel Tourn via cutting) - -24. HADOOP-419. Fix a NullPointerException finding the ClassLoader - when using libhdfs. (omalley via cutting) - -25. HADOOP-460. Fix contrib/smallJobsBenchmark to use Text instead of - UTF8. (Sanjay Dahiya via cutting) - -26. HADOOP-196. Fix Configuration(Configuration) constructor to work - correctly. (Sami Siren via cutting) - -27. HADOOP-501. Fix Configuration.toString() to handle URL resources. - (Thomas Friol via cutting) - -28. HADOOP-499. Reduce the use of Strings in contrib/streaming, - replacing them with Text for better performance. - (Hairong Kuang via cutting) - -29. HADOOP-64. Manage multiple volumes with a single DataNode. - Previously DataNode would create a separate daemon per configured - volume, each with its own connection to the NameNode. Now all - volumes are handled by a single DataNode daemon, reducing the load - on the NameNode. (Milind Bhandarkar via cutting) - -30. HADOOP-424. Fix MapReduce so that jobs which generate zero splits - do not fail. (Fr??d??ric Bertin via cutting) - -31. HADOOP-408. Adjust some timeouts and remove some others so that - unit tests run faster. (cutting) - -32. HADOOP-507. Fix an IllegalAccessException in DFS. - (omalley via cutting) - -33. HADOOP-320. Fix so that checksum files are correctly copied when - the destination of a file copy is a directory. - (Hairong Kuang via cutting) - -34. HADOOP-286. In DFSClient, avoid pinging the NameNode with - renewLease() calls when no files are being written. - (Konstantin Shvachko via cutting) - -35. HADOOP-312. Close idle IPC connections. All IPC connections were - cached forever. Now, after a connection has been idle for more - than a configurable amount of time (one second by default), the - connection is closed, conserving resources on both client and - server. (Devaraj Das via cutting) - -36. HADOOP-497. Permit the specification of the network interface and - nameserver to be used when determining the local hostname - advertised by datanodes and tasktrackers. - (Lorenzo Thione via cutting) - -37. HADOOP-441. Add a compression codec API and extend SequenceFile - to use it. This will permit the use of alternate compression - codecs in SequenceFile. (Arun C Murthy via cutting) - -38. HADOOP-483. Improvements to libhdfs build and documentation. - (Arun C Murthy via cutting) - -39. HADOOP-458. Fix a memory corruption bug in libhdfs. - (Arun C Murthy via cutting) - -40. HADOOP-517. Fix a contrib/streaming bug in end-of-line detection. - (Hairong Kuang via cutting) - -41. HADOOP-474. Add CompressionCodecFactory, and use it in - TextInputFormat and TextOutputFormat. Compressed input files are - automatically decompressed when they have the correct extension. - Output files will, when output compression is specified, be - generated with an approprate extension. Also add a gzip codec and - fix problems with UTF8 text inputs. (omalley via cutting) - - -Release 0.5.0 - 2006-08-04 - - 1. HADOOP-352. Fix shell scripts to use /bin/sh instead of - /bin/bash, for better portability. - (Jean-Baptiste Quenot via cutting) - - 2. HADOOP-313. Permit task state to be saved so that single tasks - may be manually re-executed when debugging. (omalley via cutting) - - 3. HADOOP-339. Add method to JobClient API listing jobs that are - not yet complete, i.e., that are queued or running. - (Mahadev Konar via cutting) - - 4. HADOOP-355. Updates to the streaming contrib module, including - API fixes, making reduce optional, and adding an input type for - StreamSequenceRecordReader. (Michel Tourn via cutting) - - 5. HADOOP-358. Fix a NPE bug in Path.equals(). - (Fr??d??ric Bertin via cutting) - - 6. HADOOP-327. Fix ToolBase to not call System.exit() when - exceptions are thrown. (Hairong Kuang via cutting) - - 7. HADOOP-359. Permit map output to be compressed. - (omalley via cutting) - - 8. HADOOP-341. Permit input URI to CopyFiles to use the HTTP - protocol. This lets one, e.g., more easily copy log files into - DFS. (Arun C Murthy via cutting) - - 9. HADOOP-361. Remove unix dependencies from streaming contrib - module tests, making them pure java. (Michel Tourn via cutting) - -10. HADOOP-354. Make public methods to stop DFS daemons. - (Barry Kaplan via cutting) - -11. HADOOP-252. Add versioning to RPC protocols. - (Milind Bhandarkar via cutting) - -12. HADOOP-356. Add contrib to "compile" and "test" build targets, so - that this code is better maintained. (Michel Tourn via cutting) - -13. HADOOP-307. Add smallJobsBenchmark contrib module. This runs - lots of small jobs, in order to determine per-task overheads. - (Sanjay Dahiya via cutting) - -14. HADOOP-342. Add a tool for log analysis: Logalyzer. - (Arun C Murthy via cutting) - -15. HADOOP-347. Add web-based browsing of DFS content. The namenode - redirects browsing requests to datanodes. Content requests are - redirected to datanodes where the data is local when possible. - (Devaraj Das via cutting) - -16. HADOOP-351. Make Hadoop IPC kernel independent of Jetty. - (Devaraj Das via cutting) - -17. HADOOP-237. Add metric reporting to DFS and MapReduce. With only - minor configuration changes, one can now monitor many Hadoop - system statistics using Ganglia or other monitoring systems. - (Milind Bhandarkar via cutting) - -18. HADOOP-376. Fix datanode's HTTP server to scan for a free port. - (omalley via cutting) - -19. HADOOP-260. Add --config option to shell scripts, specifying an - alternate configuration directory. (Milind Bhandarkar via cutting) - -20. HADOOP-381. Permit developers to save the temporary files for - tasks whose names match a regular expression, to facilliate - debugging. (omalley via cutting) - -21. HADOOP-344. Fix some Windows-related problems with DF. - (Konstantin Shvachko via cutting) - -22. HADOOP-380. Fix reduce tasks to poll less frequently for map - outputs. (Mahadev Konar via cutting) - -23. HADOOP-321. Refactor DatanodeInfo, in preparation for - HADOOP-306. (Konstantin Shvachko & omalley via cutting) - -24. HADOOP-385. Fix some bugs in record io code generation. - (Milind Bhandarkar via cutting) - -25. HADOOP-302. Add new Text class to replace UTF8, removing - limitations of that class. Also refactor utility methods for - writing zero-compressed integers (VInts and VLongs). - (Hairong Kuang via cutting) - -26. HADOOP-335. Refactor DFS namespace/transaction logging in - namenode. (Konstantin Shvachko via cutting) - -27. HADOOP-375. Fix handling of the datanode HTTP daemon's port so - that multiple datanode's can be run on a single host. - (Devaraj Das via cutting) - -28. HADOOP-386. When removing excess DFS block replicas, remove those - on nodes with the least free space first. - (Johan Oskarson via cutting) - -29. HADOOP-389. Fix intermittent failures of mapreduce unit tests. - Also fix some build dependencies. - (Mahadev & Konstantin via cutting) - -30. HADOOP-362. Fix a problem where jobs hang when status messages - are recieved out-of-order. (omalley via cutting) - -31. HADOOP-394. Change order of DFS shutdown in unit tests to - minimize errors logged. (Konstantin Shvachko via cutting) - -32. HADOOP-396. Make DatanodeID implement Writable. - (Konstantin Shvachko via cutting) - -33. HADOOP-377. Permit one to add URL resources to a Configuration. - (Jean-Baptiste Quenot via cutting) - -34. HADOOP-345. Permit iteration over Configuration key/value pairs. - (Michel Tourn via cutting) - -35. HADOOP-409. Streaming contrib module: make configuration - properties available to commands as environment variables. - (Michel Tourn via cutting) - -36. HADOOP-369. Add -getmerge option to dfs command that appends all - files in a directory into a single local file. - (Johan Oskarson via cutting) - -37. HADOOP-410. Replace some TreeMaps with HashMaps in DFS, for - a 17% performance improvement. (Milind Bhandarkar via cutting) - -38. HADOOP-411. Add unit tests for command line parser. - (Hairong Kuang via cutting) - -39. HADOOP-412. Add MapReduce input formats that support filtering - of SequenceFile data, including sampling and regex matching. - Also, move JobConf.newInstance() to a new utility class. - (Hairong Kuang via cutting) - -40. HADOOP-226. Fix fsck command to properly consider replication - counts, now that these can vary per file. (Bryan Pendleton via cutting) - -41. HADOOP-425. Add a Python MapReduce example, using Jython. - (omalley via cutting) - - -Release 0.4.0 - 2006-06-28 - - 1. HADOOP-298. Improved progress reports for CopyFiles utility, the - distributed file copier. (omalley via cutting) - - 2. HADOOP-299. Fix the task tracker, permitting multiple jobs to - more easily execute at the same time. (omalley via cutting) - - 3. HADOOP-250. Add an HTTP user interface to the namenode, running - on port 50070. (Devaraj Das via cutting) - - 4. HADOOP-123. Add MapReduce unit tests that run a jobtracker and - tasktracker, greatly increasing code coverage. - (Milind Bhandarkar via cutting) - - 5. HADOOP-271. Add links from jobtracker's web ui to tasktracker's - web ui. Also attempt to log a thread dump of child processes - before they're killed. (omalley via cutting) - - 6. HADOOP-210. Change RPC server to use a selector instead of a - thread per connection. This should make it easier to scale to - larger clusters. Note that this incompatibly changes the RPC - protocol: clients and servers must both be upgraded to the new - version to ensure correct operation. (Devaraj Das via cutting) - - 7. HADOOP-311. Change DFS client to retry failed reads, so that a - single read failure will not alone cause failure of a task. - (omalley via cutting) - - 8. HADOOP-314. Remove the "append" phase when reducing. Map output - files are now directly passed to the sorter, without first - appending them into a single file. Now, the first third of reduce - progress is "copy" (transferring map output to reduce nodes), the - middle third is "sort" (sorting map output) and the last third is - "reduce" (generating output). Long-term, the "sort" phase will - also be removed. (omalley via cutting) - - 9. HADOOP-316. Fix a potential deadlock in the jobtracker. - (omalley via cutting) - -10. HADOOP-319. Fix FileSystem.close() to remove the FileSystem - instance from the cache. (Hairong Kuang via cutting) - -11. HADOOP-135. Fix potential deadlock in JobTracker by acquiring - locks in a consistent order. (omalley via cutting) - -12. HADOOP-278. Check for existence of input directories before - starting MapReduce jobs, making it easier to debug this common - error. (omalley via cutting) - -13. HADOOP-304. Improve error message for - UnregisterdDatanodeException to include expected node name. - (Konstantin Shvachko via cutting) - -14. HADOOP-305. Fix TaskTracker to ask for new tasks as soon as a - task is finished, rather than waiting for the next heartbeat. - This improves performance when tasks are short. - (Mahadev Konar via cutting) - -15. HADOOP-59. Add support for generic command line options. One may - now specify the filesystem (-fs), the MapReduce jobtracker (-jt), - a config file (-conf) or any configuration property (-D). The - "dfs", "fsck", "job", and "distcp" commands currently support - this, with more to be added. (Hairong Kuang via cutting) - -16. HADOOP-296. Permit specification of the amount of reserved space - on a DFS datanode. One may specify both the percentage free and - the number of bytes. (Johan Oskarson via cutting) - -17. HADOOP-325. Fix a problem initializing RPC parameter classes, and - remove the workaround used to initialize classes. - (omalley via cutting) - -18. HADOOP-328. Add an option to the "distcp" command to ignore read - errors while copying. (omalley via cutting) - -19. HADOOP-27. Don't allocate tasks to trackers whose local free - space is too low. (Johan Oskarson via cutting) - -20. HADOOP-318. Keep slow DFS output from causing task timeouts. - This incompatibly changes some public interfaces, adding a - parameter to OutputFormat.getRecordWriter() and the new method - Reporter.progress(), but it makes lots of tasks succeed that were - previously failing. (Milind Bhandarkar via cutting) - - -Release 0.3.2 - 2006-06-09 - - 1. HADOOP-275. Update the streaming contrib module to use log4j for - its logging. (Michel Tourn via cutting) - - 2. HADOOP-279. Provide defaults for log4j logging parameters, so - that things still work reasonably when Hadoop-specific system - properties are not provided. (omalley via cutting) - - 3. HADOOP-280. Fix a typo in AllTestDriver which caused the wrong - test to be run when "DistributedFSCheck" was specified. - (Konstantin Shvachko via cutting) - - 4. HADOOP-240. DFS's mkdirs() implementation no longer logs a warning - when the directory already exists. (Hairong Kuang via cutting) - - 5. HADOOP-285. Fix DFS datanodes to be able to re-join the cluster - after the connection to the namenode is lost. (omalley via cutting) - - 6. HADOOP-277. Fix a race condition when creating directories. - (Sameer Paranjpye via cutting) - - 7. HADOOP-289. Improved exception handling in DFS datanode. - (Konstantin Shvachko via cutting) - - 8. HADOOP-292. Fix client-side logging to go to standard error - rather than standard output, so that it can be distinguished from - application output. (omalley via cutting) - - 9. HADOOP-294. Fixed bug where conditions for retrying after errors - in the DFS client were reversed. (omalley via cutting) - - -Release 0.3.1 - 2006-06-05 - - 1. HADOOP-272. Fix a bug in bin/hadoop setting log - parameters. (omalley & cutting) - - 2. HADOOP-274. Change applications to log to standard output rather - than to a rolling log file like daemons. (omalley via cutting) - - 3. HADOOP-262. Fix reduce tasks to report progress while they're - waiting for map outputs, so that they do not time out. - (Mahadev Konar via cutting) - - 4. HADOOP-245 and HADOOP-246. Improvements to record io package. - (Mahadev Konar via cutting) - - 5. HADOOP-276. Add logging config files to jar file so that they're - always found. (omalley via cutting) - - -Release 0.3.0 - 2006-06-02 - - 1. HADOOP-208. Enhance MapReduce web interface, adding new pages - for failed tasks, and tasktrackers. (omalley via cutting) - - 2. HADOOP-204. Tweaks to metrics package. (David Bowen via cutting) - - 3. HADOOP-209. Add a MapReduce-based file copier. This will - copy files within or between file systems in parallel. - (Milind Bhandarkar via cutting) - - 4. HADOOP-146. Fix DFS to check when randomly generating a new block - id that no existing blocks already have that id. - (Milind Bhandarkar via cutting) - - 5. HADOOP-180. Make a daemon thread that does the actual task clean ups, so - that the main offerService thread in the taskTracker doesn't get stuck - and miss his heartbeat window. This was killing many task trackers as - big jobs finished (300+ tasks / node). (omalley via cutting) - - 6. HADOOP-200. Avoid transmitting entire list of map task names to - reduce tasks. Instead just transmit the number of map tasks and - henceforth refer to them by number when collecting map output. - (omalley via cutting) - - 7. HADOOP-219. Fix a NullPointerException when handling a checksum - exception under SequenceFile.Sorter.sort(). (cutting & stack) - - 8. HADOOP-212. Permit alteration of the file block size in DFS. The - default block size for new files may now be specified in the - configuration with the dfs.block.size property. The block size - may also be specified when files are opened. - (omalley via cutting) - - 9. HADOOP-218. Avoid accessing configuration while looping through - tasks in JobTracker. (Mahadev Konar via cutting) - -10. HADOOP-161. Add hashCode() method to DFS's Block. - (Milind Bhandarkar via cutting) - -11. HADOOP-115. Map output types may now be specified. These are also - used as reduce input types, thus permitting reduce input types to - differ from reduce output types. (Runping Qi via cutting) - -12. HADOOP-216. Add task progress to task status page. - (Bryan Pendelton via cutting) - -13. HADOOP-233. Add web server to task tracker that shows running - tasks and logs. Also add log access to job tracker web interface. - (omalley via cutting) - -14. HADOOP-205. Incorporate pending tasks into tasktracker load - calculations. (Mahadev Konar via cutting) - -15. HADOOP-247. Fix sort progress to better handle exceptions. - (Mahadev Konar via cutting) - -16. HADOOP-195. Improve performance of the transfer of map outputs to - reduce nodes by performing multiple transfers in parallel, each on - a separate socket. (Sameer Paranjpye via cutting) - -17. HADOOP-251. Fix task processes to be tolerant of failed progress - reports to their parent process. (omalley via cutting) - -18. HADOOP-325. Improve the FileNotFound exceptions thrown by - LocalFileSystem to include the name of the file. - (Benjamin Reed via cutting) - -19. HADOOP-254. Use HTTP to transfer map output data to reduce - nodes. This, together with HADOOP-195, greatly improves the - performance of these transfers. (omalley via cutting) - -20. HADOOP-163. Cause datanodes that\ are unable to either read or - write data to exit, so that the namenode will no longer target - them for new blocks and will replicate their data on other nodes. - (Hairong Kuang via cutting) - -21. HADOOP-222. Add a -setrep option to the dfs commands that alters - file replication levels. (Johan Oskarson via cutting) - -22. HADOOP-75. In DFS, only check for a complete file when the file - is closed, rather than as each block is written. - (Milind Bhandarkar via cutting) - -23. HADOOP-124. Change DFS so that datanodes are identified by a - persistent ID rather than by host and port. This solves a number - of filesystem integrity problems, when, e.g., datanodes are - restarted. (Konstantin Shvachko via cutting) - -24. HADOOP-256. Add a C API for DFS. (Arun C Murthy via cutting) - -25. HADOOP-211. Switch to use the Jakarta Commons logging internally, - configured to use log4j by default. (Arun C Murthy and cutting) - -26. HADOOP-265. Tasktracker now fails to start if it does not have a - writable local directory for temporary files. In this case, it - logs a message to the JobTracker and exits. (Hairong Kuang via cutting) - -27. HADOOP-270. Fix potential deadlock in datanode shutdown. - (Hairong Kuang via cutting) - -Release 0.2.1 - 2006-05-12 - - 1. HADOOP-199. Fix reduce progress (broken by HADOOP-182). - (omalley via cutting) - - 2. HADOOP-201. Fix 'bin/hadoop dfs -report'. (cutting) - - 3. HADOOP-207. Fix JDK 1.4 incompatibility introduced by HADOOP-96. - System.getenv() does not work in JDK 1.4. (Hairong Kuang via cutting) - - -Release 0.2.0 - 2006-05-05 - - 1. Fix HADOOP-126. 'bin/hadoop dfs -cp' now correctly copies .crc - files. (Konstantin Shvachko via cutting) - - 2. Fix HADOOP-51. Change DFS to support per-file replication counts. - (Konstantin Shvachko via cutting) - - 3. Fix HADOOP-131. Add scripts to start/stop dfs and mapred daemons. - Use these in start/stop-all scripts. (Chris Mattmann via cutting) - - 4. Stop using ssh options by default that are not yet in widely used - versions of ssh. Folks can still enable their use by uncommenting - a line in conf/hadoop-env.sh. (cutting) - - 5. Fix HADOOP-92. Show information about all attempts to run each - task in the web ui. (Mahadev konar via cutting) - - 6. Fix HADOOP-128. Improved DFS error handling. (Owen O'Malley via cutting) - - 7. Fix HADOOP-129. Replace uses of java.io.File with new class named - Path. This fixes bugs where java.io.File methods were called - directly when FileSystem methods were desired, and reduces the - likelihood of such bugs in the future. It also makes the handling - of pathnames more consistent between local and dfs FileSystems and - between Windows and Unix. java.io.File-based methods are still - available for back-compatibility, but are deprecated and will be - removed once 0.2 is released. (cutting) - - 8. Change dfs.data.dir and mapred.local.dir to be comma-separated - lists of directories, no longer be space-separated. This fixes - several bugs on Windows. (cutting) - - 9. Fix HADOOP-144. Use mapred task id for dfs client id, to - facilitate debugging. (omalley via cutting) - -10. Fix HADOOP-143. Do not line-wrap stack-traces in web ui. - (omalley via cutting) - -11. Fix HADOOP-118. In DFS, improve clean up of abandoned file - creations. (omalley via cutting) - -12. Fix HADOOP-138. Stop multiple tasks in a single heartbeat, rather - than one per heartbeat. (Stefan via cutting) - -13. Fix HADOOP-139. Remove a potential deadlock in - LocalFileSystem.lock(). (Igor Bolotin via cutting) - -14. Fix HADOOP-134. Don't hang jobs when the tasktracker is - misconfigured to use an un-writable local directory. (omalley via cutting) - -15. Fix HADOOP-115. Correct an error message. (Stack via cutting) - -16. Fix HADOOP-133. Retry pings from child to parent, in case of - (local) communcation problems. Also log exit status, so that one - can distinguish patricide from other deaths. (omalley via cutting) - -17. Fix HADOOP-142. Avoid re-running a task on a host where it has - previously failed. (omalley via cutting) - -18. Fix HADOOP-148. Maintain a task failure count for each - tasktracker and display it in the web ui. (omalley via cutting) - -19. Fix HADOOP-151. Close a potential socket leak, where new IPC - connection pools were created per configuration instance that RPCs - use. Now a global RPC connection pool is used again, as - originally intended. (cutting) - -20. Fix HADOOP-69. Don't throw a NullPointerException when getting - hints for non-existing file split. (Bryan Pendelton via cutting) - -21. Fix HADOOP-157. When a task that writes dfs files (e.g., a reduce - task) failed and was retried, it would fail again and again, - eventually failing the job. The problem was that dfs did not yet - know that the failed task had abandoned the files, and would not - yet let another task create files with the same names. Dfs now - retries when creating a file long enough for locks on abandoned - files to expire. (omalley via cutting) - -22. Fix HADOOP-150. Improved task names that include job - names. (omalley via cutting) - -23. Fix HADOOP-162. Fix ConcurrentModificationException when - releasing file locks. (omalley via cutting) - -24. Fix HADOOP-132. Initial check-in of new Metrics API, including - implementations for writing metric data to a file and for sending - it to Ganglia. (David Bowen via cutting) - -25. Fix HADOOP-160. Remove some uneeded synchronization around - time-consuming operations in the TaskTracker. (omalley via cutting) - -26. Fix HADOOP-166. RPCs failed when passed subclasses of a declared - parameter type. This is fixed by changing ObjectWritable to store - both the declared type and the instance type for Writables. Note - that this incompatibly changes the format of ObjectWritable and - will render unreadable any ObjectWritables stored in files. - Nutch only uses ObjectWritable in intermediate files, so this - should not be a problem for Nutch. (Stefan & cutting) - -27. Fix HADOOP-168. MapReduce RPC protocol methods should all declare - IOException, so that timeouts are handled appropriately. - (omalley via cutting) - -28. Fix HADOOP-169. Don't fail a reduce task if a call to the - jobtracker to locate map outputs fails. (omalley via cutting) - -29. Fix HADOOP-170. Permit FileSystem clients to examine and modify - the replication count of individual files. Also fix a few - replication-related bugs. (Konstantin Shvachko via cutting) - -30. Permit specification of a higher replication levels for job - submission files (job.xml and job.jar). This helps with large - clusters, since these files are read by every node. (cutting) - -31. HADOOP-173. Optimize allocation of tasks with local data. (cutting) - -32. HADOOP-167. Reduce number of Configurations and JobConf's - created. (omalley via cutting) - -33. NUTCH-256. Change FileSystem#createNewFile() to create a .crc - file. The lack of a .crc file was causing warnings. (cutting) - -34. HADOOP-174. Change JobClient to not abort job until it has failed - to contact the job tracker for five attempts, not just one as - before. (omalley via cutting) - -35. HADOOP-177. Change MapReduce web interface to page through tasks. - Previously, when jobs had more than a few thousand tasks they - could crash web browsers. (Mahadev Konar via cutting) - -36. HADOOP-178. In DFS, piggyback blockwork requests from datanodes - on heartbeat responses from namenode. This reduces the volume of - RPC traffic. Also move startup delay in blockwork from datanode - to namenode. This fixes a problem where restarting the namenode - triggered a lot of uneeded replication. (Hairong Kuang via cutting) - -37. HADOOP-183. If the DFS namenode is restarted with different - minimum and/or maximum replication counts, existing files' - replication counts are now automatically adjusted to be within the - newly configured bounds. (Hairong Kuang via cutting) - -38. HADOOP-186. Better error handling in TaskTracker's top-level - loop. Also improve calculation of time to send next heartbeat. - (omalley via cutting) - -39. HADOOP-187. Add two MapReduce examples/benchmarks. One creates - files containing random data. The second sorts the output of the - first. (omalley via cutting) - -40. HADOOP-185. Fix so that, when a task tracker times out making the - RPC asking for a new task to run, the job tracker does not think - that it is actually running the task returned. (omalley via cutting) - -41. HADOOP-190. If a child process hangs after it has reported - completion, its output should not be lost. (Stack via cutting) - -42. HADOOP-184. Re-structure some test code to better support testing - on a cluster. (Mahadev Konar via cutting) - -43. HADOOP-191 Add streaming package, Hadoop's first contrib module. - This permits folks to easily submit MapReduce jobs whose map and - reduce functions are implemented by shell commands. Use - 'bin/hadoop jar build/hadoop-streaming.jar' to get details. - (Michel Tourn via cutting) - -44. HADOOP-189. Fix MapReduce in standalone configuration to - correctly handle job jar files that contain a lib directory with - nested jar files. (cutting) - -45. HADOOP-65. Initial version of record I/O framework that enables - the specification of record types and generates marshalling code - in both Java and C++. Generated Java code implements - WritableComparable, but is not yet otherwise used by - Hadoop. (Milind Bhandarkar via cutting) - -46. HADOOP-193. Add a MapReduce-based FileSystem benchmark. - (Konstantin Shvachko via cutting) - -47. HADOOP-194. Add a MapReduce-based FileSystem checker. This reads - every block in every file in the filesystem. (Konstantin Shvachko - via cutting) - -48. HADOOP-182. Fix so that lost task trackers to not change the - status of reduce tasks or completed jobs. Also fixes the progress - meter so that failed tasks are subtracted. (omalley via cutting) - -49. HADOOP-96. Logging improvements. Log files are now separate from - standard output and standard error files. Logs are now rolled. - Logging of all DFS state changes can be enabled, to facilitate - debugging. (Hairong Kuang via cutting) - - -Release 0.1.1 - 2006-04-08 - - 1. Added CHANGES.txt, logging all significant changes to Hadoop. (cutting) - - 2. Fix MapReduceBase.close() to throw IOException, as declared in the - Closeable interface. This permits subclasses which override this - method to throw that exception. (cutting) - - 3. Fix HADOOP-117. Pathnames were mistakenly transposed in - JobConf.getLocalFile() causing many mapred temporary files to not - be removed. (Raghavendra Prabhu via cutting) - - 4. Fix HADOOP-116. Clean up job submission files when jobs complete. - (cutting) - - 5. Fix HADOOP-125. Fix handling of absolute paths on Windows (cutting) - -Release 0.1.0 - 2006-04-01 - - 1. The first release of Hadoop. - |