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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2018/09/09 11:35:00 UTC

[jira] [Commented] (SPARK-25386) Don't need to synchronize the IndexShuffleBlockResolver for each writeIndexFileAndCommit

    [ https://issues.apache.org/jira/browse/SPARK-25386?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16608426#comment-16608426 ] 

Apache Spark commented on SPARK-25386:
--------------------------------------

User 'ConeyLiu' has created a pull request for this issue:
https://github.com/apache/spark/pull/22371

> Don't need to synchronize the IndexShuffleBlockResolver for each writeIndexFileAndCommit
> ----------------------------------------------------------------------------------------
>
>                 Key: SPARK-25386
>                 URL: https://issues.apache.org/jira/browse/SPARK-25386
>             Project: Spark
>          Issue Type: Improvement
>          Components: Spark Core
>    Affects Versions: 2.3.1
>            Reporter: Xianyang Liu
>            Priority: Major
>
> Now, we need synchronize the instance of IndexShuffleBlockResolver in order to make the commit check and tmp file rename atomically. This can be improved. We could synchronize a lock which is different for each `shuffleId + mapId` instead of  synchronize the indexShuffleBlockResolver for each writeIndexFileAndCommit.



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