GitHub user nburoojy opened a pull request:
https://github.com/apache/spark/pull/9526
[SPARK-9301] [SQL] Add collect_set and collect_list aggregate functions
For now they are thin wrappers around the corresponding Hive UDAFs.
One limitation with these in Hive 0.13.0 is they only support aggregating
primitive types.
I chose snake_case here instead of camelCase because it seems to be used in
the majority of the multi-word fns.
Do we also want to add these to `functions.py`?
This approach was recommended here:
https://github.com/apache/spark/pull/8592#issuecomment-154247089
@marmbrus @rxin
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/nburoojy/spark nick/udaf-alias
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/9526.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 #9526
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commit 289ace5b2577cb53f84b98407597f9dde98755d7
Author: Nick Buroojy <[email protected]>
Date: 2015-11-06T19:12:20Z
[SPARK-9301] [SQL] Add collect_set and collect_list aggregate functions
For now they are thin wrappers around the corresponding Hive UDAFs.
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