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https://issues.apache.org/jira/browse/SPARK-2999?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14566756#comment-14566756
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Josh Rosen commented on SPARK-2999:
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I think we may actually do this now, right?
> Compress all the serialized data
> --------------------------------
>
> Key: SPARK-2999
> URL: https://issues.apache.org/jira/browse/SPARK-2999
> Project: Spark
> Issue Type: Improvement
> Components: PySpark
> Reporter: Davies Liu
> Assignee: Davies Liu
>
> LZ4 is so fast that we can have performance benefit for all network/disk IO.
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