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Posted to issues@spark.apache.org by "Sean R. Owen (Jira)" <ji...@apache.org> on 2020/01/02 13:33:00 UTC

[jira] [Resolved] (SPARK-26780) Improve shuffle read using ReadAheadInputStream

     [ https://issues.apache.org/jira/browse/SPARK-26780?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean R. Owen resolved SPARK-26780.
----------------------------------
    Resolution: Won't Fix

> Improve  shuffle read using ReadAheadInputStream 
> -------------------------------------------------
>
>                 Key: SPARK-26780
>                 URL: https://issues.apache.org/jira/browse/SPARK-26780
>             Project: Spark
>          Issue Type: Improvement
>          Components: Shuffle
>    Affects Versions: 3.0.0
>            Reporter: liuxian
>            Priority: Major
>
> Using _ReadAheadInputStream_  to improve  shuffle read  performance.
>  _ReadAheadInputStream_ can save cpu utilization and almost no performance regression



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