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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2021/09/27 22:49:00 UTC
[jira] [Commented] (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:comment-tabpanel&focusedCommentId=17421075#comment-17421075 ]
Apache Spark commented on SPARK-34826:
--------------------------------------
User 'venkata91' has created a pull request for this issue:
https://github.com/apache/spark/pull/34122
> 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
> 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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