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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2015/08/31 21:54:46 UTC

[jira] [Assigned] (SPARK-10291) Add statsByKey method to compute StatCounters for each key in an RDD

     [ https://issues.apache.org/jira/browse/SPARK-10291?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-10291:
------------------------------------

    Assignee: Apache Spark

> Add statsByKey method to compute StatCounters for each key in an RDD
> --------------------------------------------------------------------
>
>                 Key: SPARK-10291
>                 URL: https://issues.apache.org/jira/browse/SPARK-10291
>             Project: Spark
>          Issue Type: New Feature
>          Components: PySpark
>            Reporter: Erik Shilts
>            Assignee: Apache Spark
>            Priority: Minor
>
> A common task is to summarize numerical data for different groups. Having a `statsByKey` method would simplify this so the user would not have to write the aggregators for all the statistics or manage collecting by key and computing individual StatCounters.
> This should be a straightforward addition to PySpark. I can look into adding to Scala and R if we want to maintain feature parity.



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