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Posted to issues@spark.apache.org by "Mridul Muralidharan (Jira)" <ji...@apache.org> on 2021/04/26 05:20:00 UTC

[jira] [Assigned] (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

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

Mridul Muralidharan reassigned SPARK-32921:
-------------------------------------------

    Assignee: Venkata krishnan Sowrirajan

> 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
>
> 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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