Github user smarthi commented on the pull request:
https://github.com/apache/flink/pull/1829#issuecomment-200551422
Not sure as to why u think this is "way to specific", this is a very
convenient feature to have when dealing with Distributed Row Matrix (DRM)
blocks for distributed Machine Learning computations. We found ourselves 3
different variants doing the same thing and Flink happened to have one that
directly did it for Flink's datasets. Hence this PR.
@fhueske thanks for your feedback, it would be great to have this in the
planned 1.0.1 bug release.
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