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Posted to issues@spark.apache.org by "Patrick Wendell (JIRA)" <ji...@apache.org> on 2014/10/18 22:21:34 UTC
[jira] [Updated] (SPARK-3994) countByKey / countByValue do not go
through Aggregator
[ https://issues.apache.org/jira/browse/SPARK-3994?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Patrick Wendell updated SPARK-3994:
-----------------------------------
Component/s: Spark Core
> countByKey / countByValue do not go through Aggregator
> ------------------------------------------------------
>
> Key: SPARK-3994
> URL: https://issues.apache.org/jira/browse/SPARK-3994
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> 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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