GitHub user davies opened a pull request:
https://github.com/apache/spark/pull/1978
[SPARK-3073] [PySpark] use external sort in sortBy() and sortByKey()
Using external sort to support sort large datasets in reduce stage.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/davies/spark sort
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/1978.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 #1978
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commit 55602ee6122aa5ce5b3f52b66cb0a74a6e275fba
Author: Davies Liu <davies....@gmail.com>
Date: 2014-08-15T21:48:34Z
use external sort in sortBy() and sortByKey()
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