GitHub user aray opened a pull request:
https://github.com/apache/spark/pull/12861
[SPARK-13749][SQL][FOLLOW-UP] Faster pivot implementation for many distinct
values with two phase aggregation
## What changes were proposed in this pull request?
This is a follow up PR for #11583. It makes 3 lazy vals into just vals and
adds unit test coverage.
## How was this patch tested?
Existing unit tests and additional unit tests.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/aray/spark fast-pivot-follow-up
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/12861.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 #12861
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commit 47ebb3ae0430aa9f4976d8eb1b5531f053ad9c0e
Author: Andrew Ray <[email protected]>
Date: 2016-05-03T04:10:08Z
Changes aggBufferAttributes, aggBufferSchema, and inputAggBufferAttributes
to be just val's instead of lazy val's.
Adds unit tests for pivoting with data types not supported by PivotFirst.
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