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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-16105) LLAP: refactor executor pool to not depend on RejectedExecutionEx for preemption
Date Fri, 03 Mar 2017 19:49:45 GMT
Sergey Shelukhin created HIVE-16105:
---------------------------------------

             Summary: LLAP: refactor executor pool to not depend on RejectedExecutionEx for
preemption
                 Key: HIVE-16105
                 URL: https://issues.apache.org/jira/browse/HIVE-16105
             Project: Hive
          Issue Type: Bug
            Reporter: Sergey Shelukhin
            Assignee: Sergey Shelukhin


There's a queue inside the threadpool consisting on one item (that's how we set it up), which
means that we can submit N+1 tasks and not get rejected, with one task still not running and
no preemption happening. Having a threadpool like this also limits our options to e.g. move
the task that is being killed out immediately to start another one (that itself is out of
the scope of this jira)



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