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Posted to issues@spark.apache.org by "liuxian (JIRA)" <ji...@apache.org> on 2019/01/30 07:37:00 UTC

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

liuxian created SPARK-26780:
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             Summary: 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


Using _ReadAheadInputStream_  to improve  shuffle read  performance.
 _ReadAheadInputStream_ can save cpu utilization and almost no performance regression



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