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https://issues.apache.org/jira/browse/SPARK-36855?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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jinhai updated SPARK-36855:
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Description: In the ShuffleBlockFetcherIterator.partitionBlocksByFetchMode
method, both local and host-local execute the
mergeContinuousShuffleBlockIdsIfNeeded method first, but remote blocks executes
the method many times in the createFetchRequests method. Can merge blocks be
executed only once in advance? (was: In the
ShuffleBlockFetcherIterator.partitionBlocksByFetchMode method, both local and
host-local execute the mergeContinuousShuffleBlockIdsIfNeeded method first, but
remote blocks executes the mergeContinuousShuffleBlockIdsIfNeeded method many
times in the createFetchRequests method. Can merge blocks be executed only once
in advance?)
> Uniformly execute the mergeContinuousShuffleBlockIdsIfNeeded method first
> -------------------------------------------------------------------------
>
> Key: SPARK-36855
> URL: https://issues.apache.org/jira/browse/SPARK-36855
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 3.1.0, 3.1.1, 3.1.2
> Reporter: jinhai
> Priority: Major
>
> In the ShuffleBlockFetcherIterator.partitionBlocksByFetchMode method, both
> local and host-local execute the mergeContinuousShuffleBlockIdsIfNeeded
> method first, but remote blocks executes the method many times in the
> createFetchRequests method. Can merge blocks be executed only once in advance?
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