Github user tzulitai commented on the issue:
https://github.com/apache/flink/pull/2801
@aljoscha and me had an offline discussion to let `StreamStatus` bypass the
operators, instead of exposing them and have another `processStreamStatus(..)`
method in the operator interface. This change is incorporated in the 1st commit.
The second commit is some general improvements, including updating the
Javadocs to match the new "operator bypass" implementation.
Third commit adds a test to verify that watermarks generated by operators
in a task's operator chain is ignored and not forwarded if the task is `IDLE`.
@aljoscha this is ready for another review, thanks!
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