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Posted to yarn-dev@hadoop.apache.org by "Prabhu Joseph (Jira)" <ji...@apache.org> on 2019/11/08 12:14:00 UTC
[jira] [Created] (YARN-9965) ClassNotFoundException when auxiliary
service is loaded from HDFS on subsequent restart of NM
Prabhu Joseph created YARN-9965:
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Summary: ClassNotFoundException when auxiliary service is loaded from HDFS on subsequent restart of NM
Key: YARN-9965
URL: https://issues.apache.org/jira/browse/YARN-9965
Project: Hadoop YARN
Issue Type: Bug
Reporter: Prabhu Joseph
Assignee: Prabhu Joseph
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}
*AuxService.java: Path downloaded = download.call()*
On first time - the downloaded jar file is shown as [file:/yarn/nm/nmAuxService/org.apache.auxtest.AuxServiceFromHDFS_1573205385991/aux-service-hdfs.jar|file:///yarn/nm/nmAuxService/org.apache.auxtest.AuxServiceFromHDFS_1573205385991/aux-service-hdfs.jar]
On Subsequent restart - it is shown as /yarn/nm/nmAuxService/org.apache.auxtest.AuxServiceFromHDFS_1573205385991/aux-service-hdfs.jar/*
Looks the previous jar local location is not removed causing the issue.
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