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https://issues.apache.org/jira/browse/YARN-7032?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rohith Sharma K S reopened YARN-7032:
-------------------------------------
Reopening this issue since this is appearing in again and again. This looks to
be an issue in our code where we are passing null in ArrayList that causing
RegionServer to shutdown.
> [ATSv2] NPE while starting hbase co-processor
> ---------------------------------------------
>
> Key: YARN-7032
> URL: https://issues.apache.org/jira/browse/YARN-7032
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Rohith Sharma K S
>
> It is seen randomly that hbase co-processor fails to start with NPE. But
> again starting RegionServer, able to succeed in starting RS.
> {noformat}
> 2017-08-17 05:53:13,535 ERROR
> [RpcServer.FifoWFPBQ.priority.handler=18,queue=0,port=16020]
> coprocessor.CoprocessorHost: The coprocessor
> org.apache.hadoop.yarn.server.timelineservice.storage.flow.FlowRunCoprocessor
> threw java.lang.NullPointerException
> java.lang.NullPointerException
> at org.apache.hadoop.hbase.Tag.fromList(Tag.java:187)
> at
> org.apache.hadoop.yarn.server.timelineservice.storage.flow.FlowRunCoprocessor.prePut(FlowRunCoprocessor.java:102)
> at
> org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost$30.call(RegionCoprocessorHost.java:885)
> {noformat}
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