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https://issues.apache.org/jira/browse/SPARK-11914?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-11914:
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Assignee: Apache Spark
> [SQL] Support coalesce and repartition in Dataset APIs
> ------------------------------------------------------
>
> Key: SPARK-11914
> URL: https://issues.apache.org/jira/browse/SPARK-11914
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 1.6.0
> Reporter: Xiao Li
> Assignee: Apache Spark
>
> repartition: Returns a new [[Dataset]] that has exactly `numPartitions`
> partitions.
> coalesce: Returns a new [[Dataset]] that has exactly `numPartitions`
> partitions. Similar to coalesce defined on an [[RDD]], this operation results
> in a narrow dependency, e.g. if you go from 1000 partitions to 100
> partitions, there will not be a shuffle, instead each of the 100 new
> partitions will claim 10 of the current partitions.
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