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From hvanhovell <>
Subject [GitHub] spark pull request: [SPARK-12024][SQL] More efficient multi-column...
Date Fri, 27 Nov 2015 11:10:02 GMT
GitHub user hvanhovell opened a pull request:

    [SPARK-12024][SQL] More efficient multi-column counting.

    In we enabled multi-column counting. The approach
taken in that PR introduces a bit of overhead by first creating a row only to check if all
of the columns are non-null. 
    This PR fixes that technical debt. Count now takes multiple columns as its input. In order
to make this work I have also added support for multiple columns in the single distinct code
    cc @yhuai

You can merge this pull request into a Git repository by running:

    $ git pull SPARK-12024

Alternatively you can review and apply these changes as the patch at:

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #10015
commit 3fe9cf3373a90c0a0d0bd6e75d44e13905e15458
Author: Herman van Hovell <>
Date:   2015-11-27T11:03:28Z

    More efficient multi-column counting.


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