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https://issues.apache.org/jira/browse/SPARK-36423?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-36423:
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    Assignee:     (was: Apache Spark)

> Randomize blocks within a push request before pushing to improve block merge 
> ratio
> ----------------------------------------------------------------------------------
>
>                 Key: SPARK-36423
>                 URL: https://issues.apache.org/jira/browse/SPARK-36423
>             Project: Spark
>          Issue Type: Sub-task
>          Components: Shuffle, Spark Core
>    Affects Versions: 3.2.0
>            Reporter: Min Shen
>            Priority: Major
>
> On the client side, we are currently randomizing the order of push requests 
> before processing each request. In addition we canĀ further randomize the 
> order of blocks within each push request before pushing them.
> In our benchmark, this has resulted in a 60%-70% reduction of blocks that 
> fail to be merged due to bock collision (the existing block merge ratio is 
> already pretty good in general, and this further improves it).



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