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https://issues.apache.org/jira/browse/TEZ-714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14497547#comment-14497547
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Jeff Zhang commented on TEZ-714:
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Thanks [~bikassaha] Committed to master
commit d932579b002f14b81836eeed75f4bf92d4ed7fbf (HEAD, master, TEZ-714)
Author: Jeff Zhang <[email protected]>
Date: Thu Apr 16 06:39:34 2015 +0200
TEZ-714. OutputCommitters should not run in the main AM dispatcher thread
(zjffdu)
> 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-714-10.patch,
> TEZ-714-11.patch, TEZ-714-12.patch, TEZ-714-13.patch, TEZ-714-14.patch,
> TEZ-714-15.patch, TEZ-714-16.patch, TEZ-714-17.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, TEZ-714-9.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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