Github user fhueske commented on the issue:
https://github.com/apache/flink/pull/2298
+1 for sticking to Java DataSet / DataStream for the reasons @twalthr gave.
The methods should be tagged with the `@Internal` annotation when we add them
to the Table API.
I would not rename `TableSource` to `TableInputFormat` because 1) it has no
relationship to the `InputFormat` interface and 2) there is already a
`TableInputFormat` for HBase tables (name is not very fortunate though...).
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