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Posted to issues@spark.apache.org by "Josh Rosen (JIRA)" <ji...@apache.org> on 2019/07/14 22:36:00 UTC

[jira] [Resolved] (SPARK-23992) ShuffleDependency does not need to be deserialized every time

     [ https://issues.apache.org/jira/browse/SPARK-23992?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Josh Rosen resolved SPARK-23992.
--------------------------------
    Resolution: Won't Fix

Per my comment on GitHub at https://github.com/apache/spark/pull/22065#issuecomment-511240848, I'm resolving this as "Won't Fix" since the reported performance gains do not justify the additional code complexity.

> ShuffleDependency does not need to be deserialized every time
> -------------------------------------------------------------
>
>                 Key: SPARK-23992
>                 URL: https://issues.apache.org/jira/browse/SPARK-23992
>             Project: Spark
>          Issue Type: Improvement
>          Components: Spark Core
>    Affects Versions: 2.3.0
>            Reporter: liuxian
>            Priority: Minor
>
> In the same stage, 'ShuffleDependency' is not necessary to be deserialized each time.



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