GitHub user hvanhovell opened a pull request:
https://github.com/apache/spark/pull/9819
[SPARK-8641][SQL] Native Spark Window functions
This PR removes Hive windows functions from Spark and replaces them with
(native) Spark ones. The PR is on par with Hive in terms of features.
This has the following advantages:
* Better memory management.
* The ability to use spark UDAFs in Window functions.
cc @rxin / @yhuai
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/hvanhovell/spark SPARK-8641-2
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/9819.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 #9819
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commit c70a2230db4bcd6e7170c26771a044b9019d53f2
Author: Herman van Hovell <[email protected]>
Date: 2015-11-18T18:27:41Z
Initial commit - compiles and pases initial tests.
commit 3fef5b47868484e809556138be9729fd243fcac9
Author: Herman van Hovell <[email protected]>
Date: 2015-11-18T21:06:31Z
Add a separate window function map and some types.
commit b66ef4de6399fa5a7cfd62784d3654085b5d9026
Author: Herman van Hovell <[email protected]>
Date: 2015-11-18T21:18:52Z
Fix NTile
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