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Posted to issues@spark.apache.org by "Venkata krishnan Sowrirajan (Jira)" <ji...@apache.org> on 2021/03/22 18:36:00 UTC

[jira] [Created] (SPARK-34826) Adaptive fetch of shuffle mergers for Push based shuffle

Venkata krishnan Sowrirajan created SPARK-34826:
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             Summary: Adaptive fetch of shuffle mergers for Push based shuffle
                 Key: SPARK-34826
                 URL: https://issues.apache.org/jira/browse/SPARK-34826
             Project: Spark
          Issue Type: Sub-task
          Components: Shuffle, Spark Core
    Affects Versions: 3.1.0
            Reporter: Venkata krishnan Sowrirajan


Currently the shuffle mergers are set during the creation of ShuffleMapStage. In the initial set of stages, there won't be enough executors added which can cause not enough shuffle mergers to be set during the creation of the shuffle map stage. This task is to handle the issue of low merge ratio for initial stages.



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