[jira] [Resolved] (SPARK-32921) Extend MapOutputTracker to support tracking and serving the metadata about each merged shuffle partitions for a given shuffle in push-based shuffle scenario

["Mridul Muralidharan (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-32921?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mridul Muralidharan resolved SPARK-32921.
-----------------------------------------
    Fix Version/s: 3.2.0
       Resolution: Fixed

Issue resolved by pull request 30480
[https://github.com/apache/spark/pull/30480]

> Extend MapOutputTracker to support tracking and serving the metadata about each merged shuffle partitions for a given shuffle in push-based shuffle scenario
> ------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-32921
>                 URL: https://issues.apache.org/jira/browse/SPARK-32921
>             Project: Spark
>          Issue Type: Sub-task
>          Components: Shuffle, Spark Core
>    Affects Versions: 3.1.0
>            Reporter: Min Shen
>            Assignee: Venkata krishnan Sowrirajan
>            Priority: Major
>             Fix For: 3.2.0
>
>
> Similar to MapStatus, which tracks the metadata about each map task's shuffle output, we also need to track the metadata about each merged shuffle partition with push-based shuffle. We currently term this as MergeStatus.
> Since MergeStatus tracks metadata from the perspective of reducer tasks, it's not efficient to break up the metadata tracked in a MergeStatus and spread it across multiple MapStatus.



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