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Posted to issues@tajo.apache.org by "Jinho Kim (JIRA)" <ji...@apache.org> on 2015/09/09 09:26:46 UTC

[jira] [Created] (TAJO-1831) Add a shutdown hook manager in order to set priorities

Jinho Kim created TAJO-1831:
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             Summary: 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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