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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2021/04/29 16:28:00 UTC

[jira] [Commented] (SPARK-35275) Add checksum for shuffle blocks

    [ https://issues.apache.org/jira/browse/SPARK-35275?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17335654#comment-17335654 ] 

Apache Spark commented on SPARK-35275:
--------------------------------------

User 'Ngone51' has created a pull request for this issue:
https://github.com/apache/spark/pull/32385

> 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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