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https://issues.apache.org/jira/browse/SPARK-17911?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15583334#comment-15583334
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Mark Hamstra commented on SPARK-17911:
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I think we're pretty much on the same page when it comes to the net effects of
just eliminating the RESUBMIT_TIMEOUT delay. I need to find some time to think
about what something better than the current delayed-resubmit-event approach
would look like.
> Scheduler does not need messageScheduler for ResubmitFailedStages
> -----------------------------------------------------------------
>
> Key: SPARK-17911
> URL: https://issues.apache.org/jira/browse/SPARK-17911
> Project: Spark
> Issue Type: Improvement
> Components: Scheduler
> Affects Versions: 2.0.0
> Reporter: Imran Rashid
>
> Its not totally clear what the purpose of the {{messageScheduler}} is in
> {{DAGScheduler}}. It can perhaps be eliminated completely; or perhaps we
> should just clearly document its purpose.
> This comes from a long discussion w/ [~markhamstra] on an unrelated PR here:
> https://github.com/apache/spark/pull/15335/files/c80ad22a242255cac91cce2c7c537f9b21100f70#diff-6a9ff7fb74fd490a50462d45db2d5e11
> But its tricky so breaking it out here for archiving the discussion.
> Note: this issue requires a decision on what to do before a code change, so
> lets just discuss it on jira first.
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