Vrushali C created YARN-6801:
--------------------------------
Summary: 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
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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