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https://issues.apache.org/jira/browse/SPARK-10296?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14718225#comment-14718225
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Sean Owen commented on SPARK-10296:
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What do you mean that you're forced to use map? if you have an RDD of pairs and
aren't changing keys, use mapValues?
Adding a new default param does not mean it's binary compatible.
> add preservesParitioning parameter to RDD.map
> ---------------------------------------------
>
> Key: SPARK-10296
> URL: https://issues.apache.org/jira/browse/SPARK-10296
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Reporter: Esteban Donato
> Priority: Minor
>
> It would be nice to add the Boolean parameter preservesParitioning with
> default false to RDD.map method just as it is in RDD.mapPartitions method.
> If you agree I can submit a pull request with this enhancement.
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