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https://issues.apache.org/jira/browse/TAJO-819?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13995970#comment-13995970
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Jaehwa Jung edited comment on TAJO-819 at 5/13/14 6:09 AM:
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This patch includes a few features as follows:
* Added transition for QueryUnit and QueryUnitAttempt
* Added transition type for debugging
* Check stopped QueryId for blocking unexpected resource requests
was (Author: blrunner):
This patch includes a few features as follows:
* Added StateMachine for QueryUnit and QueryUnitAttempt
* Added StateMachine type for debugging
* Check stopped QueryId for blocking unexpected resource requests
> KillQuery does not work query occasionally.
> -------------------------------------------
>
> Key: TAJO-819
> URL: https://issues.apache.org/jira/browse/TAJO-819
> Project: Tajo
> Issue Type: Bug
> Components: query master, worker
> Reporter: Jaehwa Jung
> Assignee: Jaehwa Jung
> Fix For: 0.9.0, 0.8.1
>
> Attachments: TAJO-819.patch
>
>
> There are two types of killing queries. First is that QueryMaster cancel
> QueryUnitAttempt before QueryUnitAttempt be passed to TajoWorker. Second is
> that TajoWorker cancel running QueryUnitAttempt.
> If QueryMaster cancel QueryUnitAttempts, it will be stopped. But
> unfortunately, at nearly the same time, a few QueryUnitAttempts can be passed
> to TajoWorker. And these never will be stopped because it can't find valid
> state for state machines.
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