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https://issues.apache.org/jira/browse/TAJO-1251?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jinho Kim resolved TAJO-1251.
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Resolution: Fixed
committed it
> Query is hanging occasionally by shuffle report
> -----------------------------------------------
>
> Key: TAJO-1251
> URL: https://issues.apache.org/jira/browse/TAJO-1251
> Project: Tajo
> Issue Type: Bug
> Components: data shuffle, query master
> Affects Versions: 0.9.0
> Reporter: Jinho Kim
> Assignee: Jinho Kim
> Fix For: 0.10
>
> Attachments: Tajo.gv, querymaster.png
>
>
> Currently, Query is failed when race condition occur in
> {{SubQuery.waitingIntermediateReport()}}. If a event is not complete, other
> events will be blocked in AsyncDispatcher.
> We should remove the thread lock in event handler.
> {noformat}
> 2014-12-12 14:05:28,211 INFO org.apache.tajo.master.querymaster.SubQuery:
> eb_1412172843714_0001_000003, receiveExecutionBlockReport:3
> 2014-12-12 14:05:28,227 ERROR org.apache.tajo.master.querymaster.SubQuery:
> eb_1412172843714_0001_000003, Timeout while receiving intermediate reports:
> 121471 ms
> {noformat}
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