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https://issues.apache.org/jira/browse/TAJO-1831?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14740206#comment-14740206
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ASF GitHub Bot commented on TAJO-1831:
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Github user jihoonson commented on the pull request:
https://github.com/apache/tajo/pull/751#issuecomment-139454276
+1 LGTM!
> Add a shutdown hook manager in order to set priorities
> ------------------------------------------------------
>
> Key: TAJO-1831
> URL: https://issues.apache.org/jira/browse/TAJO-1831
> Project: Tajo
> Issue Type: Improvement
> Components: Java Client, RPC, TajoMaster, Worker
> Reporter: Jinho Kim
> Assignee: Jinho Kim
> Priority: Minor
>
> Sometimes, event-group thread of netty’s is not stopped. because jvm will
> start a shutdown-hook after all thread is stopped without kill signal. it is
> dead-lock state.
> We should explicitly call to shutdown the event-group thread of netty’s and
> should set a shutdown-hook order
> For example, before you start up TajoMaster, runs tsql, you can find deadlock
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