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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2018/02/27 10:05:00 UTC
[jira] [Commented] (SPARK-23524) Big local shuffle blocks should
not be checked for corruption.
[ https://issues.apache.org/jira/browse/SPARK-23524?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16378324#comment-16378324 ]
Apache Spark commented on SPARK-23524:
--------------------------------------
User 'jinxing64' has created a pull request for this issue:
https://github.com/apache/spark/pull/20685
> Big local shuffle blocks should not be checked for corruption.
> --------------------------------------------------------------
>
> Key: SPARK-23524
> URL: https://issues.apache.org/jira/browse/SPARK-23524
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 2.2.1
> Reporter: jin xing
> Priority: Major
>
> In current code, all local blocks will be checked for corruption no matter it's big or not. The reasons are as below:
> # Size in FetchResult for local block is set to be 0 ([https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/storage/ShuffleBlockFetcherIterator.scala#L327)]
> # SPARK-4105 meant to only check the small blocks(size<maxBytesInFlight/3), but for reason 1, below check will be invalid. https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/storage/ShuffleBlockFetcherIterator.scala#L420
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