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https://issues.apache.org/jira/browse/YARN-10328?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17147947#comment-17147947
]
Bilwa S T commented on YARN-10328:
----------------------------------
Thanks [~eyang]
> Too many ZK Curator NodeExists exception logs in YARN Service AM logs
> ---------------------------------------------------------------------
>
> Key: YARN-10328
> URL: https://issues.apache.org/jira/browse/YARN-10328
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Bilwa S T
> Assignee: Bilwa S T
> Priority: Major
> Fix For: 3.4.0
>
> Attachments: YARN-10328.001.patch
>
>
> Following debug logs are printed everytime when component is started.
> {code:java}
> [pool-6-thread-3] DEBUG zk.CuratorService - path already present:
> /registry/users/server/services/yarn-service/default-worker/components
> org.apache.zookeeper.KeeperException$NodeExistsException: KeeperErrorCode =
> NodeExists for
> /registry/users/hetuserver/services/yarn-service/default-worker/components
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:128)
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
> at org.apache.zookeeper.ZooKeeper.create(ZooKeeper.java:1480)
> at
> org.apache.curator.framework.imps.CreateBuilderImpl$11.call(CreateBuilderImpl.java:740)
> at
> org.apache.curator.framework.imps.CreateBuilderImpl$11.call(CreateBuilderImpl.java:723)
> at org.apache.curator.RetryLoop.callWithRetry(RetryLoop.java:109)
> at
> org.apache.curator.framework.imps.CreateBuilderImpl.pathInForeground(CreateBuilderImpl.java:720)
> at
> org.apache.curator.framework.imps.CreateBuilderImpl.protectedPathInForeground(CreateBuilderImpl.java:484)
> at
> org.apache.curator.framework.imps.CreateBuilderImpl.forPath(CreateBuilderImpl.java:474)
> at
> org.apache.curator.framework.imps.CreateBuilderImpl.forPath(CreateBuilderImpl.java:454)
> at
> org.apache.curator.framework.imps.CreateBuilderImpl.forPath(CreateBuilderImpl.java:44)
> at
> org.apache.hadoop.registry.client.impl.zk.CuratorService.zkMkPath(CuratorService.java:587)
> at
> org.apache.hadoop.registry.client.impl.zk.RegistryOperationsService.mknode(RegistryOperationsService.java:99)
> at
> org.apache.hadoop.yarn.service.registry.YarnRegistryViewForProviders.putComponent(YarnRegistryViewForProviders.java:146)
> at
> org.apache.hadoop.yarn.service.registry.YarnRegistryViewForProviders.putComponent(YarnRegistryViewForProviders.java:128)
> at
> org.apache.hadoop.yarn.service.component.instance.ComponentInstance.updateServiceRecord(ComponentInstance.java:511)
> at
> org.apache.hadoop.yarn.service.component.instance.ComponentInstance.updateContainerStatus(ComponentInstance.java:449)
> at
> org.apache.hadoop.yarn.service.component.instance.ComponentInstance$ContainerStatusRetriever.run(ComponentInstance.java:620)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> {code}
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