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https://issues.apache.org/jira/browse/SPARK-2585?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Josh Rosen resolved SPARK-2585.
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Resolution: Won't Fix
I'm going to resolve this as "Won't Fix" since every attempt at removing this
special handling has caused serious performance regressions. Feel free to
re-open this if we discover a workaround that doesn't cause a huge slowdown
while deserializing configurations.
> 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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