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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2014/10/18 00:17:33 UTC

[jira] [Commented] (SPARK-3994) countByKey / countByValue do not go through Aggregator

    [ https://issues.apache.org/jira/browse/SPARK-3994?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14175635#comment-14175635 ] 

Apache Spark commented on SPARK-3994:
-------------------------------------

User 'aarondav' has created a pull request for this issue:
https://github.com/apache/spark/pull/2839

> countByKey / countByValue do not go through Aggregator
> ------------------------------------------------------
>
>                 Key: SPARK-3994
>                 URL: https://issues.apache.org/jira/browse/SPARK-3994
>             Project: Spark
>          Issue Type: Bug
>            Reporter: Aaron Davidson
>            Assignee: Aaron Davidson
>
> The implementations of these methods are historical remnants of Spark from a time when the shuffle may have been nonexistent. Now, they can be simplified by plugging into reduceByKey(), potentially seeing performance and stability improvements.



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