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From "Rohith Sharma K S (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6801) NPE in RM while setting collectors map in NodeHeartbeatResponse
Date Tue, 11 Jul 2017 12:15:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-6801?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16082123#comment-16082123
] 

Rohith Sharma K S commented on YARN-6801:
-----------------------------------------

committing shortly 

> NPE in RM while setting collectors map in NodeHeartbeatResponse
> ---------------------------------------------------------------
>
>                 Key: YARN-6801
>                 URL: https://issues.apache.org/jira/browse/YARN-6801
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>    Affects Versions: YARN-5355, YARN-5355-branch-2
>            Reporter: Vrushali C
>            Assignee: Vrushali C
>         Attachments: YARN-6801-YARN-5355.001.patch
>
>
> Null Pointer Exception seen in ResourceTrackerService#setAppCollectorsMapToResponse call

> {code}
> 2017-06-22 22:24:01,437 WARN org.apache.hadoop.ipc.Server: IPC Server handler 49 on 8031,
call org.apache.hadoop.yarn.server.api.ResourceTrackerPB.nodeHeartbeat from 10.35.172.116:44399
Call#3929 Retry#0
> java.lang.NullPointerException
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceTrackerService.setAppCollectorsMapToResponse(ResourceTrackerService.java:467)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceTrackerService.nodeHeartbeat(ResourceTrackerService.java:447)
>         at org.apache.hadoop.yarn.server.api.impl.pb.service.ResourceTrackerPBServiceImpl.nodeHeartbeat(ResourceTrackerPBServiceImpl.java:68)
>         at org.apache.hadoop.yarn.proto.ResourceTracker$ResourceTrackerService$2.callBlockingMethod(ResourceTracker.java:81)
>         at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:619)
>         at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:962)
>         at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2084)
>         at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2080)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at javax.security.auth.Subject.doAs(Subject.java:415)
>         at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1645)
>         at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2078)
> {code}
> It correlates to RM invoking setAppCollectorsMapToResponse and calling 
> {code}
>       AppCollectorData appCollectorData = rmApps.get(appId).getCollectorData();
> {code}
> If the app object is not present in the list of running app ids, then this will throw
NPE.
> Filing jira to fix it. 



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