[jira] [Commented] (SPARK-42689) Allow ShuffleDriverComponent to declare if shuffle data is reliably stored

["Apache Spark (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-42689?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17697120#comment-17697120 ] 

Apache Spark commented on SPARK-42689:
--------------------------------------

User 'mridulm' has created a pull request for this issue:
https://github.com/apache/spark/pull/40307

> Allow ShuffleDriverComponent to declare if shuffle data is reliably stored
> --------------------------------------------------------------------------
>
>                 Key: SPARK-42689
>                 URL: https://issues.apache.org/jira/browse/SPARK-42689
>             Project: Spark
>          Issue Type: Sub-task
>          Components: Spark Core
>    Affects Versions: 3.1.0, 3.2.0, 3.3.0, 3.4.0
>            Reporter: Mridul Muralidharan
>            Priority: Major
>
> Currently, if there is an executor node loss, we assume the shuffle data on that node is also lost. This is not necessarily the case if there is a shuffle component managing the shuffle data and reliably maintaining it (for example, in distributed filesystem or in a disaggregated shuffle cluster).
> Downstream projects have patches to Apache Spark in order to workaround this issue, for example Apache Celeborn has [this|https://github.com/apache/incubator-celeborn/blob/main/assets/spark-patch/RSS_RDA_spark3.patch].



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