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https://issues.apache.org/jira/browse/SPARK-2585?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14099234#comment-14099234
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Patrick Wendell commented on SPARK-2585:
----------------------------------------

Unfortunately after a lot of effort we still can't get the test times down on 
this one and it's still unclear whether it will cause performance regressions.

Since this isn't particularly critical from a user perspective (it's mostly 
about simplifying internals) I think it's best to punt this to 1.2. One 
unfortunate thing is that it means SPARK-2546 will remain broken in 1.1.

> Remove special handling of Hadoop JobConf
> -----------------------------------------
>
>                 Key: SPARK-2585
>                 URL: https://issues.apache.org/jira/browse/SPARK-2585
>             Project: Spark
>          Issue Type: Improvement
>          Components: Spark Core
>            Reporter: Patrick Wendell
>            Assignee: Josh Rosen
>            Priority: Critical
>
> This is a follow up to SPARK-2521 and should close SPARK-2546 (provided the 
> implementation does not use shared conf objects). We no longer need to 
> specially broadcast the Hadoop configuration since we are broadcasting RDD 
> data anyways.



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