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https://issues.apache.org/jira/browse/SPARK-32922?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mridul Muralidharan resolved SPARK-32922.
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Fix Version/s: 3.2.0
Resolution: Fixed
Issue resolved by pull request 32140
[https://github.com/apache/spark/pull/32140]
> Add support for ShuffleBlockFetcherIterator to read from merged shuffle
> partitions and to fallback to original shuffle blocks if encountering failures
> ------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-32922
> URL: https://issues.apache.org/jira/browse/SPARK-32922
> Project: Spark
> Issue Type: Sub-task
> Components: Shuffle, Spark Core
> Affects Versions: 3.1.0
> Reporter: Min Shen
> Assignee: Chandni Singh
> Priority: Major
> Fix For: 3.2.0
>
>
> With the extended MapOutputTracker, the reducers can now get the task input
> data from the merged shuffle partitions for more efficient shuffle data
> fetch. The reducers should also be able to fallback to fetching the original
> unmarked blocks if it encounters failures when fetching the merged shuffle
> partitions.
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