GitHub user zhengruifeng opened a pull request:
https://github.com/apache/spark/pull/12135
[SPARK-14352][SQL] approxQuantile should support multi columns
## What changes were proposed in this pull request?
just add the multi-cols support based on current private api
## How was this patch tested?
no tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zhengruifeng/spark quantile4multicols
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/12135.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 #12135
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commit 5edf1c88d973d4d32cb1f3d62416be4629e37f5d
Author: Zheng RuiFeng <[email protected]>
Date: 2016-04-03T08:08:32Z
create quantile4cols
commit 67947afc466a5c81bc71110a6b7e9528204086ac
Author: Zheng RuiFeng <[email protected]>
Date: 2016-04-03T08:11:04Z
fix
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