Erik Shilts created SPARK-10291:
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Summary: 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
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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