GitHub user felixcheung opened a pull request:
https://github.com/apache/spark/pull/16739
[SPARK-19399][SPARKR] Add R coalesce API for DataFrame and Column
## What changes were proposed in this pull request?
Add coalesce on DataFrame for down partitioning without shuffle and
coalesce on Column
## How was this patch tested?
manual, unit tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/felixcheung/spark rcoalesce
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/16739.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #16739
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commit e5a39f15028e3b34d3c5ebe455ea1fb72cbdc80b
Author: Felix Cheung <[email protected]>
Date: 2017-01-30T07:42:00Z
coalesce
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