GitHub user jinxing64 opened a pull request:
https://github.com/apache/spark/pull/19330
Orderable MapType
## What changes were proposed in this pull request?
We can make MapType orderable, and thus usable in aggregates and joins.
## How was this patch tested?
Unit tests.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/jinxing64/spark SPARK-18134-v2
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/19330.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 #19330
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commit 2e2b98d2fa9b399280cb4b5dbbfa1aadd3ede951
Author: jinxing <jinxing6...@126.com>
Date: 2017-09-22T08:43:05Z
Orderable MapType
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