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https://issues.apache.org/jira/browse/TAJO-1522?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14502210#comment-14502210
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ASF GitHub Bot commented on TAJO-1522:
--------------------------------------
Github user jinossy commented on the pull request:
https://github.com/apache/tajo/pull/507#issuecomment-94332322
+1
It is possible situation when it killed or failed.
Thanks
> NPE making stage history before task scheduler is initialized
> -------------------------------------------------------------
>
> Key: TAJO-1522
> URL: https://issues.apache.org/jira/browse/TAJO-1522
> Project: Tajo
> Issue Type: Bug
> Reporter: Navis
> Assignee: Navis
> Priority: Trivial
>
> {noformat}
> ava.lang.NullPointerException
> at org.apache.tajo.querymaster.Stage.makeStageHistory(Stage.java:471)
> at org.apache.tajo.querymaster.Stage.getStageHistory(Stage.java:445)
> at
> org.apache.tajo.querymaster.Query.makeStageHistories(Query.java:295)
> at org.apache.tajo.querymaster.Query.getQueryHistory(Query.java:288)
> at
> org.apache.tajo.querymaster.QueryMaster$QueryMasterContext.stopQuery(QueryMaster.java:369)
> at
> org.apache.tajo.querymaster.QueryMaster$QueryStopEventHandler.handle(QueryMaster.java:425)
> at
> org.apache.tajo.querymaster.QueryMaster$QueryStopEventHandler.handle(QueryMaster.java:422)
> at
> org.apache.hadoop.yarn.event.AsyncDispatcher.dispatch(AsyncDispatcher.java:173)
> at
> org.apache.hadoop.yarn.event.AsyncDispatcher$1.run(AsyncDispatcher.java:106)
> at java.lang.Thread.run(Thread.java:701)
> {noformat}
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