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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2020/08/08 12:42:00 UTC

[jira] [Commented] (SPARK-32574) Race condition in FsHistoryProvider listing iteration

    [ https://issues.apache.org/jira/browse/SPARK-32574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17173646#comment-17173646 ] 

Apache Spark commented on SPARK-32574:
--------------------------------------

User 'yanxiaole' has created a pull request for this issue:
https://github.com/apache/spark/pull/29392

> Race condition in FsHistoryProvider listing iteration
> -----------------------------------------------------
>
>                 Key: SPARK-32574
>                 URL: https://issues.apache.org/jira/browse/SPARK-32574
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Core
>    Affects Versions: 3.0.0
>            Reporter: Yan Xiaole
>            Priority: Major
>
> It seems to be a race condition in FSHistoryProvider that iterate the listing with high concurrency:
> {code:java}
> val stale = listing.view(classOf[LogInfo])
>  .index("lastProcessed")
>  .last(newLastScanTime - 1)
>  .asScala
>  .toList{code}
> `toList` will iterate items in the listing, if one of listing entries was deleted by some clean thread, checkForLogs will throw out a `java.util.NoSuchElementException` and abort current execution.



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