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## What changes were proposed in this pull request?
This patch adds a text-based socket source similar to the one in Spark Streaming for debugging and tutorials. The source is clearly marked as debug-only so that users don't try to run it in production applications, because this type of source cannot provide HA without storing a lot of state in Spark.
## How was this patch tested?
Unit tests and manual tests in spark-shell.
Author: Matei Zaharia <matei@databricks.com>
Closes #13748 from mateiz/socket-source.
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## What changes were proposed in this pull request?
This patch renames various DefaultSources to make their names more self-describing. The choice of "DefaultSource" was from the days when we did not have a good way to specify short names.
They are now named:
- LibSVMFileFormat
- CSVFileFormat
- JdbcRelationProvider
- JsonFileFormat
- ParquetFileFormat
- TextFileFormat
Backward compatibility is maintained through aliasing.
## How was this patch tested?
Updated relevant test cases too.
Author: Reynold Xin <rxin@databricks.com>
Closes #13311 from rxin/SPARK-15543.
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## What changes were proposed in this pull request?
Add ConsoleSink to structure streaming, user could use it to display dataframes on the console (useful for debugging and demostrating), similar to the functionality of `DStream#print`, to use it:
```
val query = result.write
.format("console")
.trigger(ProcessingTime("2 seconds"))
.startStream()
```
## How was this patch tested?
local verified.
Not sure it is suitable to add into structure streaming, please review and help to comment, thanks a lot.
Author: jerryshao <sshao@hortonworks.com>
Closes #13162 from jerryshao/SPARK-15375.
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info like table name and file path for data source.
## What changes were proposed in this pull request?
Improve the physical plan visualization by adding meta info like table name and file path for data source.
Meta info InputPaths and TableName are newly added. Example:
```
scala> spark.range(10).write.saveAsTable("tt")
scala> spark.sql("select * from tt").explain()
== Physical Plan ==
WholeStageCodegen
: +- BatchedScan HadoopFiles[id#13L] Format: ParquetFormat, InputPaths: file:/home/xzhong10/spark-linux/assembly/spark-warehouse/tt, PushedFilters: [], ReadSchema: struct<id:bigint>, TableName: default.tt
```
## How was this patch tested?
manual tests.
Changes for UI:
Before:
After:
Author: Sean Zhong <clockfly@gmail.com>
Closes #12947 from clockfly/spark-14476.
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This PR brings back visualization for generated operators, they looks like:
Note: SQL metrics are not supported right now, because they are very slow, will be supported once we have batch mode.
Author: Davies Liu <davies@databricks.com>
Closes #10828 from davies/viz_codegen.
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CSV is the most common data format in the "small data" world. It is often the first format people want to try when they see Spark on a single node. Having to rely on a 3rd party component for this leads to poor user experience for new users. This PR merges the popular spark-csv data source package (https://github.com/databricks/spark-csv) with SparkSQL.
This is a first PR to bring the functionality to spark 2.0 master. We will complete items outlines in the design document (see JIRA attachment) in follow up pull requests.
Author: Hossein <hossein@databricks.com>
Author: Reynold Xin <rxin@databricks.com>
Closes #10766 from rxin/csv.
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Resubmit #9297 and #9991
On the live web UI, there is a SQL tab which provides valuable information for the SQL query. But once the workload is finished, we won't see the SQL tab on the history server. It will be helpful if we support SQL UI on the history server so we can analyze it even after its execution.
To support SQL UI on the history server:
1. I added an onOtherEvent method to the SparkListener trait and post all SQL related events to the same event bus.
2. Two SQL events SparkListenerSQLExecutionStart and SparkListenerSQLExecutionEnd are defined in the sql module.
3. The new SQL events are written to event log using Jackson.
4. A new trait SparkHistoryListenerFactory is added to allow the history server to feed events to the SQL history listener. The SQL implementation is loaded at runtime using java.util.ServiceLoader.
Author: Carson Wang <carson.wang@intel.com>
Closes #10061 from carsonwang/SqlHistoryUI.
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This reverts commit cc243a079b1c039d6e7f0b410d1654d94a090e14 / PR #9297
I'm reverting this because it broke SQLListenerMemoryLeakSuite in the master Maven builds.
See #9991 for a discussion of why this broke the tests.
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On the live web UI, there is a SQL tab which provides valuable information for the SQL query. But once the workload is finished, we won't see the SQL tab on the history server. It will be helpful if we support SQL UI on the history server so we can analyze it even after its execution.
To support SQL UI on the history server:
1. I added an `onOtherEvent` method to the `SparkListener` trait and post all SQL related events to the same event bus.
2. Two SQL events `SparkListenerSQLExecutionStart` and `SparkListenerSQLExecutionEnd` are defined in the sql module.
3. The new SQL events are written to event log using Jackson.
4. A new trait `SparkHistoryListenerFactory` is added to allow the history server to feed events to the SQL history listener. The SQL implementation is loaded at runtime using `java.util.ServiceLoader`.
Author: Carson Wang <carson.wang@intel.com>
Closes #9297 from carsonwang/SqlHistoryUI.
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This adds API for reading and writing text files, similar to SparkContext.textFile and RDD.saveAsTextFile.
```
SQLContext.read.text("/path/to/something.txt")
DataFrame.write.text("/path/to/write.txt")
```
Using the new Dataset API, this also supports
```
val ds: Dataset[String] = SQLContext.read.text("/path/to/something.txt").as[String]
```
Author: Reynold Xin <rxin@databricks.com>
Closes #9240 from rxin/SPARK-11274.
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There are a few changes in this pull request:
1. Moved all data sources to execution.datasources, except the public JDBC APIs.
2. In order to maintain backward compatibility from 1, added a backward compatibility translation map in data source resolution.
3. Moved ui and metric package into execution.
4. Added more documentation on some internal classes.
5. Renamed DataSourceRegister.format -> shortName.
6. Added "override" modifier on shortName.
7. Removed IntSQLMetric.
Author: Reynold Xin <rxin@databricks.com>
Closes #8056 from rxin/SPARK-9763 and squashes the following commits:
9df4801 [Reynold Xin] Removed hardcoded name in test cases.
d9babc6 [Reynold Xin] Shorten.
e484419 [Reynold Xin] Removed VisibleForTesting.
171b812 [Reynold Xin] MimaExcludes.
2041389 [Reynold Xin] Compile ...
79dda42 [Reynold Xin] Compile.
0818ba3 [Reynold Xin] Removed IntSQLMetric.
c46884f [Reynold Xin] Two more fixes.
f9aa88d [Reynold Xin] [SPARK-9763][SQL] Minimize exposure of internal SQL classes.
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Users currently have to provide the full class name for external data sources, like:
`sqlContext.read.format("com.databricks.spark.avro").load(path)`
This allows external data source packages to register themselves using a Service Loader so that they can add custom alias like:
`sqlContext.read.format("avro").load(path)`
This makes it so that using external data source packages uses the same format as the internal data sources like parquet, json, etc.
Author: Joseph Batchik <joseph.batchik@cloudera.com>
Author: Joseph Batchik <josephbatchik@gmail.com>
Closes #7802 from JDrit/service_loader and squashes the following commits:
49a01ec [Joseph Batchik] fixed a couple of format / error bugs
e5e93b2 [Joseph Batchik] modified rat file to only excluded added services
72b349a [Joseph Batchik] fixed error with orc data source actually
9f93ea7 [Joseph Batchik] fixed error with orc data source
87b7f1c [Joseph Batchik] fixed typo
101cd22 [Joseph Batchik] removing unneeded changes
8f3cf43 [Joseph Batchik] merged in changes
b63d337 [Joseph Batchik] merged in master
95ae030 [Joseph Batchik] changed the new trait to be used as a mixin for data source to register themselves
74db85e [Joseph Batchik] reformatted class loader
ac2270d [Joseph Batchik] removing some added test
a6926db [Joseph Batchik] added test cases for data source loader
208a2a8 [Joseph Batchik] changes to do error catching if there are multiple data sources
946186e [Joseph Batchik] started working on service loader
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operator and add a new SQL tab
This PR includes the following changes:
### SPARK-8862: Add basic instrumentation to each SparkPlan operator
A SparkPlan can override `def accumulators: Map[String, Accumulator[_]]` to expose its metrics that can be displayed in UI. The UI will use them to track the updates and show them in the web page in real-time.
### SparkSQLExecution and SQLSparkListener
`SparkSQLExecution.withNewExecutionId` will set `spark.sql.execution.id` to the local properties so that we can use it to track all jobs that belong to the same query.
SQLSparkListener is a listener to track all accumulator updates of all tasks for a query. It receives them from heartbeats can the UI can query them in real-time.
When running a query, `SQLSparkListener.onExecutionStart` will be called. When a query is finished, `SQLSparkListener.onExecutionEnd` will be called. And the Spark jobs with the same execution id will be tracked and stored with this query.
`SQLSparkListener` has to store all accumulator updates for tasks separately. When a task fails and starts to retry, we need to drop the old accumulator updates. Because we can not revert our changes to an accumulator, we have to maintain these accumulator updates by ourselves so as to drop accumulator updates for a failed task.
### SPARK-8862: A new SQL tab
Includes two pages:
#### A page for all DataFrame/SQL queries
It will show the running, completed and failed queries in 3 tables. It also displays the jobs and their links for a query in each row.
#### A detail page for a DataFrame/SQL query
In this page, it also shows the SparkPlan metrics in real-time. Run a long-running query, such as
```
val testData = sc.parallelize((1 to 1000000).map(i => (i, i.toString))).toDF()
testData.select($"_1").filter($"_1" < 1000).foreach(_ => Thread.sleep(60))
```
and you will see the metrics keep updating in real-time.
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Author: zsxwing <zsxwing@gmail.com>
Closes #7774 from zsxwing/sql-ui and squashes the following commits:
5a2bc99 [zsxwing] Remove UISeleniumSuite and its dependency
57d4cd2 [zsxwing] Use VisibleForTesting annotation
cc1c736 [zsxwing] Add SparkPlan.trackNumOfRowsEnabled to make subclasses easy to track the number of rows; fix the issue that the "save" action cannot collect metrics
3771ab0 [zsxwing] Register SQL metrics accmulators
3a101c0 [zsxwing] Change prepareCalled's type to AtomicBoolean for thread-safety
b8d5605 [zsxwing] Make prepare idempotent; call children's prepare in SparkPlan.prepare; change doPrepare to def
4ed11a1 [zsxwing] var -> val
332639c [zsxwing] Ignore UISeleniumSuite and SQLListenerSuite."no memory leak" because of SPARK-9580
bb52359 [zsxwing] Address other commens in SQLListener
c4d0f5d [zsxwing] Move newPredicate out of the iterator loop
957473c [zsxwing] Move STATIC_RESOURCE_DIR to object SQLTab
7ab4816 [zsxwing] Make SparkPlan accumulator API private[sql]
dae195e [zsxwing] Fix the code style and comments
3a66207 [zsxwing] Ignore irrelevant accumulators
b8484a1 [zsxwing] Merge branch 'master' into sql-ui
9406592 [zsxwing] Implement the SparkPlan viz
4ebce68 [zsxwing] Add SparkPlan.prepare to support BroadcastHashJoin to run background work in parallel
ca1811f [zsxwing] Merge branch 'master' into sql-ui
fef6fc6 [zsxwing] Fix a corner case
25f335c [zsxwing] Fix the code style
6eae828 [zsxwing] SQLSparkListener -> SQLListener; SparkSQLExecutionUIData -> SQLExecutionUIData; SparkSQLExecution -> SQLExecution
822af75 [zsxwing] Add SQLSparkListenerSuite and fix the issue about onExecutionEnd and onJobEnd
6be626f [zsxwing] Add UISeleniumSuite to test UI
d02a24d [zsxwing] Make ExecutionPage private
23abf73 [zsxwing] [SPARK-8862][SPARK-8862][SQL] Add basic instrumentation to each SparkPlan operator and add a new SQL tab
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