GitHub user zhengruifeng opened a pull request:
https://github.com/apache/spark/pull/16971
[SPARK-19573][SQL] Make NaN/null handling consistent in approxQuantile
## What changes were proposed in this pull request?
update `StatFunctions.multipleApproxQuantiles` to handle NaN/null
(Please fill in changes proposed in this fix)
## How was this patch tested?
existing tests and added tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zhengruifeng/spark quantiles_nan
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/16971.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 #16971
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commit d5e79a809b1edd91a7e0c1d8046bb8bfec2ba4c9
Author: Zheng RuiFeng <ruife...@foxmail.com>
Date: 2017-02-17T03:18:43Z
create pr
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