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Posted to issues@spark.apache.org by "Mridul Muralidharan (Jira)" <ji...@apache.org> on 2022/02/08 17:26:00 UTC

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

     [ https://issues.apache.org/jira/browse/SPARK-34826?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mridul Muralidharan reassigned SPARK-34826:
-------------------------------------------

    Assignee: Venkata krishnan Sowrirajan

> 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
>            Assignee: Venkata krishnan Sowrirajan
>            Priority: Major
>
> 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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