GitHub user dgingrich opened a pull request:
https://github.com/apache/spark/pull/17545
[SPARK-20232][Python] Improve combineByKey docs
## What changes were proposed in this pull request?
Improve combineByKey documentation:
* Add note on memory allocation
* Change example code to use different mergeValue and mergeCombiners
## How was this patch tested?
Doctest.
## Legal
This is my original work and I license the work to the project under the
projectâs open source license.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dgingrich/spark
topic-spark-20232-combinebykey-docs
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/17545.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 #17545
----
commit 74691d121aea9e11fc3a9c72eb61830050ccc5d5
Author: David Gingrich <da...@textio.com>
Date: 2017-02-28T08:13:35Z
Improve combineByKey docs
* Add note on memory allocation
* Change example code to use different mergeValue and mergeCombiners
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