Charan Hebri created YARN-8223: ---------------------------------- Summary: ClassNotFoundException when auxiliary service is loaded from HDFS Key: YARN-8223 URL: https://issues.apache.org/jira/browse/YARN-8223 Project: Hadoop YARN Issue Type: Bug Reporter: Charan Hebri
Loading an auxiliary jar from a local location on a node manager works as expected, {noformat} 2018-04-26 15:09:26,179 INFO util.ApplicationClassLoader (ApplicationClassLoader.java:<init>(98)) - classpath: [file:/grid/0/hadoop/yarn/local/aux-service-local.jar] 2018-04-26 15:09:26,179 INFO util.ApplicationClassLoader (ApplicationClassLoader.java:<init>(99)) - 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] 2018-04-26 15:09:26,181 INFO containermanager.AuxServices (AuxServices.java:serviceInit(252)) - The aux service:test_aux_local are using the custom classloader 2018-04-26 15:09:26,182 WARN containermanager.AuxServices (AuxServices.java:serviceInit(268)) - The Auxiliary Service named 'test_aux_local' in the configuration is for class org.apache.hadoop.yarn.server.nodemanager.containermanager.AuxiliaryServiceWithCustomClassLoader which has a name of 'org.apache.auxtest.AuxServiceFromLocal with custom class loader'. Because these are not the same tools trying to send ServiceData and read Service Meta Data may have issues unless the refer to the name in the config. 2018-04-26 15:09:26,182 INFO containermanager.AuxServices (AuxServices.java:addService(103)) - Adding auxiliary service org.apache.auxtest.AuxServiceFromLocal with custom class loader, "test_aux_local"{noformat} But loading the same jar from a location on HDFS fails with a ClassNotFoundException. {noformat} 018-04-26 15:14:39,683 INFO util.ApplicationClassLoader (ApplicationClassLoader.java:<init>(98)) - classpath: [] 2018-04-26 15:14:39,683 INFO util.ApplicationClassLoader (ApplicationClassLoader.java:<init>(99)) - 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] 2018-04-26 15:14:39,687 INFO service.AbstractService (AbstractService.java:noteFailure(267)) - Service org.apache.hadoop.yarn.server.nodemanager.containermanager.AuxServices failed in state INITED java.lang.ClassNotFoundException: org.apache.auxtest.AuxServiceFromLocal at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338) 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:249) 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:316) 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:472) at org.apache.hadoop.service.AbstractService.init(AbstractService.java:164) at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:918) at org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:979) {noformat} The difference between the 2 logs is the classpath variable in the 1st line of the log is empty in the HDFS case. It doesn't have the URL/filename of the jar file specified in the config. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-dev-h...@hadoop.apache.org