GitHub user dongjinleekr opened a pull request:
https://github.com/apache/spark/pull/21525
[SPARK-24513][ML] Attribute support in UnaryTransformer
## What changes were proposed in this pull request?
This PR adds Metadata support in `UnaryTransformer`, as a preliminary work
of [SPARK-13998](https://issues.apache.org/jira/browse/SPARK-13998) and
[SPARK-13964](https://issues.apache.org/jira/browse/SPARK-13964).
## How was this patch tested?
unit test: `build/mvn -Dtest=none
-DwildcardSuites=org.apache.spark.ml.feature.* test`
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dongjinleekr/spark feature/SPARK-24513
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/21525.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 #21525
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commit 18b5b25b42e01680e873b915c9b77bfd724b3a45
Author: Lee Dongjin <dongjin@...>
Date: 2018-06-11T08:49:06Z
[SPARK-24513][ML] Attribute support in UnaryTransformer
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