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Prabhu Joseph commented on YARN-9965: ------------------------------------- That's my mistake initially, will remember to submit patch with test case. Below is the functionality test case done to validate the fix for reference. *Repro* {code} 1. Prepare a custom auxiliary service jar and place it on hdfs [hdfs@yarndocker-1 yarn]$ cat TestShuffleHandler2.java package org; import org.apache.hadoop.yarn.server.api.AuxiliaryService; import org.apache.hadoop.yarn.server.api.ApplicationInitializationContext; import org.apache.hadoop.yarn.server.api.ApplicationTerminationContext; import java.nio.ByteBuffer; public class TestShuffleHandler2 extends AuxiliaryService { public static final String MAPREDUCE_TEST_SHUFFLE_SERVICEID = "test_shuffle2"; public TestShuffleHandler2() { super("testshuffle2"); } @Override public void initializeApplication(ApplicationInitializationContext context) { } @Override public void stopApplication(ApplicationTerminationContext context) { } @Override public synchronized ByteBuffer getMetaData() { return ByteBuffer.allocate(0); } } [hdfs@yarndocker-1 yarn]$ javac -d . -cp `hadoop classpath` TestShuffleHandler2.java [hdfs@yarndocker-1 yarn]$ jar cvf auxhdfs.jar org/ [hdfs@yarndocker-1 mapreduce]$ hadoop fs -mkdir /AUX [hdfs@yarndocker-1 mapreduce]$ hadoop fs -put /tmp/auxhdfs.jar /AUX [hdfs@yarndocker-1 mapreduce]$ hadoop fs -chmod 777 /AUX [hdfs@yarndocker-1 mapreduce]$ hadoop fs -chmod 600 /AUX/auxhdfs.jar [hdfs@yarndocker-1 mapreduce]$ hadoop fs -chown -R yarn:hadoop /AUX 2. Configure YARN NodeManager (yarn-site.xml) to pick from Hdfs <property> <name>yarn.nodemanager.aux-services</name> <value>auxhdfs</value> </property> <property> <name>yarn.nodemanager.aux-services.auxhdfs.class</name> <value>org.TestShuffleHandler2</value> </property> <property> <name>yarn.nodemanager.aux-services.auxhdfs.remote-classpath</name> <value>/AUX/auxhdfs.jar</value> </property> <property> <name>yarn.nodemanager.aux-services.auxhdfs.system-classes</name> <value>org.apache.hadoop.yarn.server.nodemanager.containermanager.AuxServices</value> </property> {code} After the patch, the issue does not happen. > Fix NodeManager failing to start when Hdfs Auxillary Jar is set > --------------------------------------------------------------- > > Key: YARN-9965 > URL: https://issues.apache.org/jira/browse/YARN-9965 > Project: Hadoop YARN > Issue Type: Bug > Components: auxservices, nodemanager > Affects Versions: 3.2.0 > Reporter: Prabhu Joseph > Assignee: Prabhu Joseph > Priority: Major > Fix For: 3.3.0 > > Attachments: YARN-9965-001.patch > > > Loading an auxiliary jar from a Hdfs location on a node manager works as > expected on first time. The subsequent restart fails with > ClassNotFoundException > {code:java} > 2019-11-08 03:59:49,256 INFO org.apache.hadoop.util.ApplicationClassLoader: > classpath: [] > 2019-11-08 03:59:49,256 INFO org.apache.hadoop.util.ApplicationClassLoader: > system classes: [java., javax.accessibility., javax.activation., > javax.activity., javax.annotation., javax.annotation.processing., > javax.crypto., javax.imageio., javax.jws., javax.lang.model., > -javax.management.j2ee., javax.management., javax.naming., javax.net., > javax.print., javax.rmi., javax.script., -javax.security.auth.message., > javax.security.auth., javax.security.cert., javax.security.sasl., > javax.sound., javax.sql., javax.swing., javax.tools., javax.transaction., > -javax.xml.registry., -javax.xml.rpc., javax.xml., org.w3c.dom., > org.xml.sax., org.apache.commons.logging., org.apache.log4j., > -org.apache.hadoop.hbase., org.apache.hadoop., core-default.xml, > hdfs-default.xml, mapred-default.xml, yarn-default.xml] > 2019-11-08 03:59:49,257 INFO org.apache.hadoop.service.AbstractService: > Service > org.apache.hadoop.yarn.server.nodemanager.containermanager.AuxServices failed > in state INITED > java.lang.ClassNotFoundException: org.apache.auxtest.AuxServiceFromHDFS > at java.net.URLClassLoader.findClass(URLClassLoader.java:381) > at java.lang.ClassLoader.loadClass(ClassLoader.java:424) > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335) > at java.lang.ClassLoader.loadClass(ClassLoader.java:357) > at > org.apache.hadoop.util.ApplicationClassLoader.loadClass(ApplicationClassLoader.java:189) > at > org.apache.hadoop.util.ApplicationClassLoader.loadClass(ApplicationClassLoader.java:157) > at java.lang.Class.forName0(Native Method) > at java.lang.Class.forName(Class.java:348) > at > org.apache.hadoop.yarn.server.nodemanager.containermanager.AuxiliaryServiceWithCustomClassLoader.getInstance(AuxiliaryServiceWithCustomClassLoader.java:169) > at > org.apache.hadoop.yarn.server.nodemanager.containermanager.AuxServices.serviceInit(AuxServices.java:270) > at > org.apache.hadoop.service.AbstractService.init(AbstractService.java:164) > at > org.apache.hadoop.service.CompositeService.serviceInit(CompositeService.java:108) > at > org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.serviceInit(ContainerManagerImpl.java:321) > at > org.apache.hadoop.service.AbstractService.init(AbstractService.java:164) > at > org.apache.hadoop.service.CompositeService.serviceInit(CompositeService.java:108) > at > org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceInit(NodeManager.java:478) > at > org.apache.hadoop.service.AbstractService.init(AbstractService.java:164) > at > org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:936) > at > org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:1016) > {code} > > The issue happens when reusing the previous localized auxillary service jar. > The localized jar file is appended with /* when reusing which has caused the > issue. > > -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org