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https://issues.apache.org/jira/browse/SPARK-37473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17449771#comment-17449771
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Apache Spark commented on SPARK-37473:
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User 'seayoun' has created a pull request for this issue:
https://github.com/apache/spark/pull/34725
> BypassMergeSortShuffleWriter may loss data when disk is missing however
> catagory is present
> -------------------------------------------------------------------------------------------
>
> Key: SPARK-37473
> URL: https://issues.apache.org/jira/browse/SPARK-37473
> Project: Spark
> Issue Type: Bug
> Components: Shuffle
> Affects Versions: 2.4.0, 2.4.1, 2.4.8, 3.0.0, 3.2.0
> Reporter: haiyangyu
> Priority: Major
> Attachments: image-2021-11-27-15-07-41-516.png
>
>
> !image-2021-11-27-15-07-41-516.png|width=715,height=484!
> We think it has no data when the segment file not exists when all segment
> files produced by `BypassMergeSortShuffleWriter` is merging;
> However, `file.exists()` may rerurn `false` when then the disk which segment
> file in on is missing and the root catagory exists; the missing disk only
> lead `file.exists()` return `false` but no exception. The task will run in
> pease and with no current segment file written.
> The segment data will be ignored and leading shuffle data loss.
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