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https://issues.apache.org/jira/browse/SPARK-8130?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Or closed SPARK-8130.
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Resolution: Won't Fix
See discussion on https://github.com/apache/spark/pull/7051
> spark.files.useFetchCache should be off by default
> --------------------------------------------------
>
> Key: SPARK-8130
> URL: https://issues.apache.org/jira/browse/SPARK-8130
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.2.0
> Reporter: Josh Rosen
> Priority: Minor
>
> I noticed that {{spark.files.useFetchCache}} is on by default, but I think
> that we should turn it off by default since it's unlikely to improve
> performance for all but a handful of users and adds some extra IO /
> complexity (albeit only at executor / app startup).
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