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https://issues.apache.org/jira/browse/SPARK-3994?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aaron Davidson reassigned SPARK-3994:
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Assignee: Aaron Davidson
> 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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