[jira] [Updated] (TEZ-714) OutputCommitters should not run in the main AM dispatcher thread

["Jeff Zhang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TEZ-714?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jeff Zhang updated TEZ-714:
---------------------------
    Attachment: TEZ-714-8.patch

> OutputCommitters should not run in the main AM dispatcher thread
> ----------------------------------------------------------------
>
>                 Key: TEZ-714
>                 URL: https://issues.apache.org/jira/browse/TEZ-714
>             Project: Apache Tez
>          Issue Type: Improvement
>            Reporter: Siddharth Seth
>            Assignee: Jeff Zhang
>            Priority: Critical
>         Attachments: DAG_2.pdf, TEZ-714-1.patch, TEZ-714-2.patch, TEZ-714-3.patch, TEZ-714-4.patch, TEZ-714-5.patch, TEZ-714-6.patch, TEZ-714-7.patch, TEZ-714-8.patch, Vertex_2.pdf
>
>
> Follow up jira from TEZ-41.
> 1) If there's multiple OutputCommitters on a Vertex, they can be run in parallel.
> 2) Running an OutputCommitter in the main thread blocks all other event handling, w.r.t the DAG, and causes the event queue to back up.
> 3) This should also cover shared commits that happen in the DAG.



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