GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/16404
[SPARK-18969][SQL] Support grouping by nondeterministic expressions
## What changes were proposed in this pull request?
Currently nondeterministic expressions are allowed in `Aggregate`(see the
[comment](https://github.com/apache/spark/blob/v2.0.2/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/CheckAnalysis.scala#L249-L251)),
but the `PullOutNondeterministic` analyzer rule failed to handle `Aggregate`,
this PR fixes it.
## How was this patch tested?
a new test suite
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloud-fan/spark groupby
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/16404.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 #16404
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commit 67f032b6ab7b23aecf432b13a6f455582754fc98
Author: Wenchen Fan <[email protected]>
Date: 2016-12-26T10:24:07Z
Support grouping by nondeterministic expressions
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