Jihoon Son created TAJO-1196:
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Summary: 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
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 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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