Github user StephanEwen commented on the pull request:
https://github.com/apache/flink/pull/308#issuecomment-69965449
I like the idea of having good utilities.
There is always a bit of a trade-off between having the right utilities,
and adding so many functions that the API becomes to cluttered and hard to use.
There is also the possibility to have something like a "lib" package of
common functions, that one can then simply use. Not quite as convenient as
having a function on the `DataSet`, but also prevents overloading the core set
of data set operations too much.
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