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https://issues.apache.org/jira/browse/YARN-6827?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rohith Sharma K S reassigned YARN-6827:
---------------------------------------
Assignee: (was: Rohith Sharma K S)
> [ATS1/1.5] NPE exception while publishing recovering applications into ATS
> during RM restart.
> ---------------------------------------------------------------------------------------------
>
> Key: YARN-6827
> URL: https://issues.apache.org/jira/browse/YARN-6827
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Reporter: Rohith Sharma K S
> Priority: Major
>
> While recovering application, it is observed that NPE exception is thrown as
> below.
> {noformat}
> 017-07-13 14:08:12,476 ERROR
> org.apache.hadoop.yarn.server.resourcemanager.metrics.TimelineServiceV1Publisher:
> Error when publishing entity
> [YARN_APPLICATION,application_1499929227397_0001]
> java.lang.NullPointerException
> at
> org.apache.hadoop.yarn.client.api.impl.TimelineClientImpl.putEntities(TimelineClientImpl.java:178)
> at
> org.apache.hadoop.yarn.server.resourcemanager.metrics.TimelineServiceV1Publisher.putEntity(TimelineServiceV1Publisher.java:368)
> {noformat}
> This is because in RM service start, active services are started first in Non
> HA case and later ATSv1 services are started. In HA case, tansitionToActive
> event has come first before ATS service are started.
> This gives sufficient time to active services recover the applications which
> tries to publish into ATSv1 while recovering. Since ATS services are not
> started yet, it throws NPE.
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