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https://issues.apache.org/jira/browse/SPARK-35275?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17391654#comment-17391654
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wuyi commented on SPARK-35275:
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[~mridulm80] Yes, we shall have the doc task. Let me create it.
> Add checksum for shuffle blocks
> -------------------------------
>
> Key: SPARK-35275
> URL: https://issues.apache.org/jira/browse/SPARK-35275
> Project: Spark
> Issue Type: New Feature
> Components: Spark Core
> Affects Versions: 3.2.0
> Reporter: wuyi
> Priority: Major
>
> Shuffle data corruption is a long-standing issue in Spark. For example, in
> SPARK-18105, people continually reports corruption issue. However, data
> corruption is difficult to reproduce in most cases and even harder to tell
> the root cause. We don't know if it's a Spark issue or not. With the checksum
> support for the shuffle, Spark itself can at least distinguish the cause
> between disk and network, which is very important for users.
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