GitHub user WeichenXu123 opened a pull request:
https://github.com/apache/spark/pull/19621
[SPARK-11215][ml] Add multiple columns support to StringIndexer
## What changes were proposed in this pull request?
Add multiple columns support to StringIndexer.
## How was this patch tested?
UT will add soon
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/WeichenXu123/spark multi-col-string-indexer
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/19621.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 #19621
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commit faa839052ebe0949882b7b8c0ca3557f26beb8e8
Author: WeichenXu <[email protected]>
Date: 2017-10-31T14:45:34Z
init pr
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