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https://issues.apache.org/jira/browse/SPARK-28210?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17168287#comment-17168287
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Matt Cheah commented on SPARK-28210:
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[~devaraj] [~tianczha] Thanks for expressing interest in this! This patch
blocks on the shuffle metadata APIs patch, which one can find here:
[https://github.com/apache/spark/pull/28618.|https://github.com/apache/spark/pull/28618]
I think after merging the shuffle metadata API change, we can provide the
appropriate reader APIs and then integrate the usage of shuffle metadata
accordingly. I originally had a diff here:
[https://github.com/mccheah/spark/pull/12], but it's fallen far out of sync
with the patches proposed against upstream Spark.
The proposed reader API can be found on the shuffle API design document:
[https://docs.google.com/document/d/1Aj6IyMsbS2sdIfHxLvIbHUNjHIWHTabfknIPoxOrTjk/edit#heading=h.cli6x4fsunz6.|https://docs.google.com/document/d/1Aj6IyMsbS2sdIfHxLvIbHUNjHIWHTabfknIPoxOrTjk/edit#heading=h.cli6x4fsunz6]
But we really cannot make any progress here unless we have the shuffle metadata
storage APIs and integration complete. Can you take a review through the Apache
patch listed above, give your +1 or feedback on how it can be improved, and
then we can go from there?
> Shuffle Storage API: Reads
> --------------------------
>
> Key: SPARK-28210
> URL: https://issues.apache.org/jira/browse/SPARK-28210
> Project: Spark
> Issue Type: Sub-task
> Components: Shuffle, Spark Core
> Affects Versions: 3.1.0
> Reporter: Matt Cheah
> Priority: Major
>
> As part of the effort to store shuffle data in arbitrary places, this issue
> tracks implementing an API for reading the shuffle data stored by the write
> API. Also ensure that the existing shuffle implementation is refactored to
> use the API.
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