GitHub user scwf opened a pull request:
https://github.com/apache/spark/pull/3531
[SPARK-4673][SQL] Optimizing limit using coalesce
Optimizing limit using coalesce to avoid shuffle.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/scwf/spark limit
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/3531.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 #3531
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commit 681243aa2ae1ae804a033a5aded0bc8127f30e80
Author: wangfei <[email protected]>
Date: 2014-12-01T07:51:00Z
optimize limit using coalesce
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