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