GitHub user mengxr opened a pull request:
https://github.com/apache/spark/pull/13789
[SPARK-16074] [MLLIB] expose VectorUDT/MatrixUDT in a public API
## What changes were proposed in this pull request?
Both VectorUDT and MatrixUDT are private APIs, because UserDefinedType
itself is private in Spark. However, in order to let developers implement their
own transformers and estimators, we should expose both types in a public API to
simply the implementation of transformSchema, transform, etc. Otherwise, they
need to get the data types using reflection.
## How was this patch tested?
Unit tests in Scala and Java.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/mengxr/spark SPARK-16074
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/13789.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 #13789
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