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https://issues.apache.org/jira/browse/TAJO-1196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14238857#comment-14238857
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Hudson commented on TAJO-1196:
------------------------------
FAILURE: Integrated in Tajo-master-CODEGEN-build #129 (See
[https://builds.apache.org/job/Tajo-master-CODEGEN-build/129/])
TAJO-1196: Unit test hangs occasionally and randomly. (jihoon) (jihoonson: rev
8f68b4bafdbb216365459d5bd118534d0031e548)
* CHANGES
* tajo-core/src/main/java/org/apache/tajo/master/querymaster/QueryMaster.java
> Unit test hangs occasionally and randomly
> -----------------------------------------
>
> Key: TAJO-1196
> URL: https://issues.apache.org/jira/browse/TAJO-1196
> Project: Tajo
> Issue Type: Bug
> Components: test
> Reporter: Jihoon Son
> Assignee: Jihoon Son
> Attachments: TAJO-1196.patch, TAJO-1196_2.patch
>
>
> I reported this problem in our dev mailing list before
> (http://mail-archives.apache.org/mod_mbox/tajo-dev/201410.mbox/%3CCACZfFK743PCEJkz0=rdt0ltuw-ajatyopgunsmragprhfc7...@mail.gmail.com%3E),
> and finally found where the problem is caused.
> The problem is, when a task runner requests a task via
> QueryMasterProtocolService.Interface.getTask(), the query master task is not
> started yet, so QueryMasterManagerService sends 'stopTaskRunnerReq' as a
> reply to that request.
> This asynchronous problem may be prominent in quite slow machines.
> I'm thinking solutions, but don't still have any ones.
> Do you have any good idea?
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