GitHub user liancheng opened a pull request:
https://github.com/apache/spark/pull/10911
[SPARK-12935][SQL] DataFrame API for Count-Min Sketch
This PR integrates Count-Min Sketch from spark-sketch into DataFrame. This
version resorts to `RDD.aggregate` for building the sketch. A more performant
UDAF version can be built in future follow-up PRs.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/liancheng/spark cms-df-api
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/10911.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 #10911
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commit 4200636b435b686ac6fe2e979544f1aca4058209
Author: Cheng Lian <[email protected]>
Date: 2016-01-26T01:15:17Z
DataFrame API for Count-Min Sketch
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