GitHub user ueshin opened a pull request:
https://github.com/apache/spark/pull/881
[SPARK-1926] [SQL] Nullability of Max/Min/First should be true.
Nullability of `Max`/`Min`/`First` should be `true` because they return
`null` if there are no rows.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ueshin/apache-spark issues/SPARK-1926
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/881.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 #881
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commit 322610f7d0899178746d9150a6eaab3d1dea5a87
Author: Takuya UESHIN <[email protected]>
Date: 2014-05-26T07:10:27Z
Fix nullability of Min/Max/First.
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