[GitHub] drill issue #925: DRILL-5749: solve foreman and netty threads deadlock

[weijietong]

Github user weijietong commented on the issue:

    https://github.com/apache/drill/pull/925
  
    anyone can review this PR ? more details about thread stacks see 
[DRLL-5749](https://issues.apache.org/jira/browse/DRILL-5749)


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