Github user stefanobaghino commented on the pull request:
https://github.com/apache/flink/pull/1536#issuecomment-174966751
This can be a starting point for further discussion. The only weak point I
see (but maybe I'm wrong) is that right now we're reading `Tuple`s and then
converting them to `Point`s and `Centroid`s. Since one of the stated aims of
the example is to showcase the usage of POJOs, should I also use the `pojoType`
method on input sources and drop the `TuplePointConverter` and
`TupleCentroidConverter`?
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