Github user fhueske commented on the issue:
https://github.com/apache/flink/pull/4183
Sorry @wuchong, I started my comment in the morning and got stuck in
meetings. That's why I didn't see your comment... It's great that we came to
the same conclusion! :-)
Instead of holding watermarks back at the sources, I would adjust them by
subtracting the offset.
What's your take on the `deferredComputationTime` vs
`firstResultTimeOffset`?
Thanks, Fabian
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