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https://issues.apache.org/jira/browse/SPARK-10704?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14876157#comment-14876157
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Apache Spark commented on SPARK-10704:
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User 'JoshRosen' has created a pull request for this issue:
https://github.com/apache/spark/pull/8825
> Consolidate HashShuffleReader and ShuffleReader and refactor
> ShuffleManager.getReader()
> ---------------------------------------------------------------------------------------
>
> Key: SPARK-10704
> URL: https://issues.apache.org/jira/browse/SPARK-10704
> Project: Spark
> Issue Type: Sub-task
> Components: Shuffle
> Reporter: Josh Rosen
> Assignee: Josh Rosen
>
> The current shuffle code has an interface named ShuffleReader with only one
> implementation, HashShuffleReader. This naming is confusing, since the same
> read path code is used for both sort- and hash-based shuffle. We should
> consolidate these classes.
> In addition, there are aspects of ShuffleManager.getReader()'s API which
> don't make a lot of sense: it exposes the ability to request a contiguous
> range of shuffle partitions, but this feature isn't supported by any
> ShuffleReader implementations and isn't used anywhere in the existing code.
> We should clean this up, too.
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