GitHub user wzhfy opened a pull request:
https://github.com/apache/spark/pull/15641
[SPARK-18111] [SQL] add the min element when compressing samples in
QuantileSummaries
## What changes were proposed in this pull request?
When multiple records have the minimum value, the answer of
ApproximatePercentile is wrong.
## How was this patch tested?
add a test case
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/wzhfy/spark percentile
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/15641.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 #15641
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commit 26a4f8524126fe7ff0b358b6de2f328217082ad4
Author: wangzhenhua <wangzhen...@huawei.com>
Date: 2016-10-26T06:44:44Z
keep the min element when merge
commit 3ad59203106f8e575713069e5bd76c5339deb8fe
Author: wangzhenhua <wangzhen...@huawei.com>
Date: 2016-10-26T06:46:43Z
typo
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