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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-15562) LLAP TaskExecutorService race can lead to some fragments being permanently lost
Date Mon, 09 Jan 2017 18:50:59 GMT

    [ https://issues.apache.org/jira/browse/HIVE-15562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15812520#comment-15812520
] 

Sergey Shelukhin commented on HIVE-15562:
-----------------------------------------

+1 if test failures are unrelated.
I am assuming that moving finishableStateUpdate under lock has no other implications for locking...

> LLAP TaskExecutorService race can lead to some fragments being permanently lost
> -------------------------------------------------------------------------------
>
>                 Key: HIVE-15562
>                 URL: https://issues.apache.org/jira/browse/HIVE-15562
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Siddharth Seth
>            Assignee: Siddharth Seth
>            Priority: Critical
>         Attachments: HIVE-15562.01.patch
>
>
> A fragment can be evicted before it's submission completed. A race can cause a situation
As a result, we end up trying to unregister the fragment for stateChangeNotifications before
it has been registered - leading to an exception, which skips the actual fragment kill.



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