GitHub user viirya opened a pull request:
https://github.com/apache/spark/pull/18480
[SPARK-21052][SQL][Follow-up] Add hash map metrics to join
## What changes were proposed in this pull request?
Remove `numHashCollisions` in `BytesToBytesMap`. And change
`getAverageProbesPerLookup()` to `getAverageProbesPerLookup` as suggested.
## How was this patch tested?
Existing tests.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/viirya/spark-1 SPARK-21052-followup
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/18480.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 #18480
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commit d8df5e08f20af44066e7cb08be5cb6dc15ac0427
Author: Liang-Chi Hsieh <vii...@gmail.com>
Date: 2017-06-30T06:40:19Z
Remove numHashCollisions.
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