diff options
| -rw-r--r-- | docs/building-with-maven.md | 6 | ||||
| -rw-r--r-- | pom.xml | 46 | ||||
| -rw-r--r-- | yarn/common/src/main/scala/org/apache/spark/deploy/yarn/ClientBase.scala | 43 |
3 files changed, 94 insertions, 1 deletions
diff --git a/docs/building-with-maven.md b/docs/building-with-maven.md index d3bc34e68b..730a6e7932 100644 --- a/docs/building-with-maven.md +++ b/docs/building-with-maven.md @@ -88,3 +88,9 @@ Running only java 8 tests and nothing else. Java 8 tests are run when -Pjava8-tests profile is enabled, they will run in spite of -DskipTests. For these tests to run your system must have a JDK 8 installation. If you have JDK 8 installed but it is not the system default, you can set JAVA_HOME to point to JDK 8 before running the tests. + +## Packaging without Hadoop dependencies for deployment on YARN ## + +The assembly jar produced by "mvn package" will, by default, include all of Spark's dependencies, including Hadoop and some of its ecosystem projects. On YARN deployments, this causes multiple versions of these to appear on executor classpaths: the version packaged in the Spark assembly and the version on each node, included with yarn.application.classpath. The "hadoop-provided" profile builds the assembly without including Hadoop-ecosystem projects, like ZooKeeper and Hadoop itself. + + @@ -807,5 +807,51 @@ </modules> </profile> + + <!-- Build without Hadoop dependencies that are included in some runtime environments. --> + <profile> + <id>hadoop-provided</id> + <activation> + <activeByDefault>false</activeByDefault> + </activation> + <dependencies> + <dependency> + <groupId>org.apache.hadoop</groupId> + <artifactId>hadoop-client</artifactId> + <scope>provided</scope> + </dependency> + <dependency> + <groupId>org.apache.hadoop</groupId> + <artifactId>hadoop-yarn-api</artifactId> + <scope>provided</scope> + </dependency> + <dependency> + <groupId>org.apache.hadoop</groupId> + <artifactId>hadoop-yarn-common</artifactId> + <scope>provided</scope> + </dependency> + <dependency> + <groupId>org.apache.hadoop</groupId> + <artifactId>hadoop-yarn-client</artifactId> + <scope>provided</scope> + </dependency> + <dependency> + <groupId>org.apache.avro</groupId> + <artifactId>avro</artifactId> + <scope>provided</scope> + </dependency> + <dependency> + <groupId>org.apache.avro</groupId> + <artifactId>avro-ipc</artifactId> + <scope>provided</scope> + </dependency> + <dependency> + <groupId>org.apache.zookeeper</groupId> + <artifactId>zookeeper</artifactId> + <scope>provided</scope> + </dependency> + </dependencies> + </profile> + </profiles> </project> diff --git a/yarn/common/src/main/scala/org/apache/spark/deploy/yarn/ClientBase.scala b/yarn/common/src/main/scala/org/apache/spark/deploy/yarn/ClientBase.scala index 4b6c7db836..74de4293d9 100644 --- a/yarn/common/src/main/scala/org/apache/spark/deploy/yarn/ClientBase.scala +++ b/yarn/common/src/main/scala/org/apache/spark/deploy/yarn/ClientBase.scala @@ -29,8 +29,10 @@ import org.apache.hadoop.fs._ import org.apache.hadoop.fs.permission.FsPermission; import org.apache.hadoop.io.DataOutputBuffer import org.apache.hadoop.mapred.Master +import org.apache.hadoop.mapreduce.MRJobConfig import org.apache.hadoop.net.NetUtils import org.apache.hadoop.security.UserGroupInformation +import org.apache.hadoop.util.StringUtils import org.apache.hadoop.yarn.api._ import org.apache.hadoop.yarn.api.ApplicationConstants.Environment import org.apache.hadoop.yarn.api.protocolrecords._ @@ -379,9 +381,48 @@ object ClientBase { // Based on code from org.apache.hadoop.mapreduce.v2.util.MRApps def populateHadoopClasspath(conf: Configuration, env: HashMap[String, String]) { - for (c <- conf.getStrings(YarnConfiguration.YARN_APPLICATION_CLASSPATH)) { + val classpathEntries = Option(conf.getStrings( + YarnConfiguration.YARN_APPLICATION_CLASSPATH)).getOrElse( + getDefaultYarnApplicationClasspath()) + for (c <- classpathEntries) { Apps.addToEnvironment(env, Environment.CLASSPATH.name, c.trim) } + + val mrClasspathEntries = Option(conf.getStrings( + "mapreduce.application.classpath")).getOrElse( + getDefaultMRApplicationClasspath()) + if (mrClasspathEntries != null) { + for (c <- mrClasspathEntries) { + Apps.addToEnvironment(env, Environment.CLASSPATH.name, c.trim) + } + } + } + + def getDefaultYarnApplicationClasspath(): Array[String] = { + try { + val field = classOf[MRJobConfig].getField("DEFAULT_YARN_APPLICATION_CLASSPATH") + field.get(null).asInstanceOf[Array[String]] + } catch { + case err: NoSuchFieldError => null + } + } + + /** + * In Hadoop 0.23, the MR application classpath comes with the YARN application + * classpath. In Hadoop 2.0, it's an array of Strings, and in 2.2+ it's a String. + * So we need to use reflection to retrieve it. + */ + def getDefaultMRApplicationClasspath(): Array[String] = { + try { + val field = classOf[MRJobConfig].getField("DEFAULT_MAPREDUCE_APPLICATION_CLASSPATH") + if (field.getType == classOf[String]) { + StringUtils.getStrings(field.get(null).asInstanceOf[String]) + } else { + field.get(null).asInstanceOf[Array[String]] + } + } catch { + case err: NoSuchFieldError => null + } } def populateClasspath(conf: Configuration, sparkConf: SparkConf, addLog4j: Boolean, env: HashMap[String, String]) { |