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https://issues.apache.org/jira/browse/SPARK-20232?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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holdenk resolved SPARK-20232.
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Resolution: Fixed
Fix Version/s: 2.2.0
Issue resolved by pull request 17545
[https://github.com/apache/spark/pull/17545]
> Better combineByKey documentation: clarify memory allocation, better example
> ----------------------------------------------------------------------------
>
> Key: SPARK-20232
> URL: https://issues.apache.org/jira/browse/SPARK-20232
> Project: Spark
> Issue Type: Improvement
> Components: Documentation
> Affects Versions: 2.1.0
> Environment: macOS Sierra 10.12.4
> Spark 2.1.0 installed via Homebrew
> Reporter: David Gingrich
> Priority: Trivial
> Fix For: 2.2.0
>
>
> combineByKey docs has a few flaws:
> - Doesn't include note about memory allocation (on aggregateBykey)
> - Example doesn't show difference between mergeValue and mergeCombiners (both
> are add)
> I have a trivial patch, will attach momentarily.
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