GitHub user rxin opened a pull request:
https://github.com/apache/spark/pull/8321
[SPARK-9242][SQL] Audit UDAF interface.
A few minor changes:
1. Improved documentation
2. Rename apply(distinct....) to distinct.
3. Changed MutableAggregationBuffer from a trait to an abstract class.
And unrelated to UDAFs:
1. Renamed file names in expressions to use suffix "Expressions" to be more
consistent.
2. Moved regexp related expressions out to its own file.
3. Renamed StringComparison => StringPredicate.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/rxin/spark SPARK-9242
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/8321.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 #8321
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commit 3a48a81dc579eebc864214063ac571147a14e4a2
Author: Reynold Xin <[email protected]>
Date: 2015-08-19T21:58:24Z
[SPARK-9242][SQL] Audit UDAF interface.
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