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Posted to issues@tez.apache.org by "Siddharth Seth (JIRA)" <ji...@apache.org> on 2015/05/06 04:38:59 UTC

[jira] [Resolved] (TEZ-2288) Remove unnecessary contention on locks by getDag, getTask, getVertex etc

     [ https://issues.apache.org/jira/browse/TEZ-2288?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Siddharth Seth resolved TEZ-2288.
---------------------------------
       Resolution: Done
    Fix Version/s: 0.7.0

Fixed as part of TEZ-1897.

> Remove unnecessary contention on locks by getDag, getTask, getVertex etc
> ------------------------------------------------------------------------
>
>                 Key: TEZ-2288
>                 URL: https://issues.apache.org/jira/browse/TEZ-2288
>             Project: Apache Tez
>          Issue Type: Improvement
>            Reporter: Siddharth Seth
>             Fix For: 0.7.0
>
>
> There's a lot of unnecessary contention on the dag lock when trying to find a task or vertex. Likewise, there's likely contention on Vertex locks. A lot of this is avoidable. One simple fix would be to make the dag / vertex etc available in Tasks.
> appContext.getCurrentDag doesn't seem to be thread safe either.



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