GitHub user Angryrou opened a pull request:
https://github.com/apache/spark/pull/17843
[Streaming] groupByKey should also disable map side combine in streaming.
## What changes were proposed in this pull request?
set the argument `mapSideCombine = false` like what rxin did 4 years ago in
[[SPARK-772]](https://github.com/mesos/spark/pull/651/commits/6738178d0daf1bbe7441db7c0c773a29bb2ec388)
to disable map side combine when a Dstream instance uses the `groupByKey`
transformation.
## How was this patch tested?
passed.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/Angryrou/spark lch
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/17843.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 #17843
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commit 4ea96f5a6349a34e54b2e815584b8ef900f91d60
Author: Kawhiii <chengha...@163.com>
Date: 2017-05-03T17:23:57Z
groupByKey should also disable map side combine in streaming.
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