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From "Ping Liu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18296) NPE in ProcedureExecutor.removeChore
Date Sun, 06 Aug 2017 06:15:02 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18296?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16115661#comment-16115661
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Ping Liu commented on HBASE-18296:
----------------------------------

[~mdrob]
Do you remember which test it is where you found this error?  There are many places where
HRegionServer starts up.  It'll be great if the specific test can be identified.

> NPE in ProcedureExecutor.removeChore
> ------------------------------------
>
>                 Key: HBASE-18296
>                 URL: https://issues.apache.org/jira/browse/HBASE-18296
>             Project: HBase
>          Issue Type: Bug
>          Components: proc-v2
>    Affects Versions: 2.0.0-alpha-1
>            Reporter: Mike Drob
>
> Saw this in logs while debugging other failing tests:
> {noformat}
> 2017-06-29 13:54:15,995 ERROR [M:0;172.18.16.40:55484] server.NIOServerCnxnFactory$1(44):
Thread Thread[M:0;172.18.16.40:55484,5,FailOnTimeoutGroup] died
> java.lang.NullPointerException
> 	at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.removeChore(ProcedureExecutor.java:656)
> 	at org.apache.hadoop.hbase.master.assignment.AssignmentManager.stop(AssignmentManager.java:233)
> 	at org.apache.hadoop.hbase.master.HMaster.stopServiceThreads(HMaster.java:1154)
> 	at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:1189)
> 	at java.lang.Thread.run(Thread.java:748)
> {noformat}
> I think it was related to an initialization failure, but we should code more defensively
anyway



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