GitHub user zhengruifeng opened a pull request:
https://github.com/apache/spark/pull/22991
[SPARK-25989][ML] OneVsRestModel handle empty outputCols incorrectly
## What changes were proposed in this pull request?
ignore empty output columns
## How was this patch tested?
added tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zhengruifeng/spark ovrm_empty_outcol
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/22991.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 #22991
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commit 035362d9ab6d04ff04e3060edd941fdbd0c26222
Author: zhengruifeng <ruifengz@...>
Date: 2018-11-09T07:47:30Z
lint
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