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Posted to issues@tez.apache.org by "Bikas Saha (JIRA)" <ji...@apache.org> on 2015/04/21 07:09:59 UTC

[jira] [Resolved] (TEZ-1714) Locking issue with StateChangeNotifier

     [ https://issues.apache.org/jira/browse/TEZ-1714?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bikas Saha resolved TEZ-1714.
-----------------------------
    Resolution: Fixed

Fixed elsewhere

> Locking issue with StateChangeNotifier
> --------------------------------------
>
>                 Key: TEZ-1714
>                 URL: https://issues.apache.org/jira/browse/TEZ-1714
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: Bikas Saha
>            Priority: Critical
>
> The StateChangeNotifier takes a read lock and notifies listeners using a direct method call. This notification could lead to the listener being complete. At this point, it may decide to unregister from further status updates and this should be allowed. However unregister tries to take a write lock on the StateChangeNotifier and the result is a deadlock.



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