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https://issues.apache.org/jira/browse/SPARK-26795?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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feiwang resolved SPARK-26795.
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Resolution: Not A Problem
> Retry remote fileSegmentManagedBuffer when creating inputStream failed during
> shuffle read phase
> ------------------------------------------------------------------------------------------------
>
> Key: SPARK-26795
> URL: https://issues.apache.org/jira/browse/SPARK-26795
> Project: Spark
> Issue Type: Bug
> Components: Shuffle
> Affects Versions: 2.3.0, 2.3.1, 2.3.2, 2.4.0
> Reporter: feiwang
> Priority: Major
>
> There is a parameter spark.maxRemoteBlockSizeFetchToMem, which means the
> remote block will be fetched to disk when size of the block is above this
> threshold in bytes.
> So during shuffle read phase, the managedBuffer which throw IOException may
> be a remote downloaded FileSegment and should be retried instead of
> throwFetchFailed directly.
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