Github user aljoscha commented on the pull request:
https://github.com/apache/flink/pull/906#issuecomment-121557154
I could add a mode where the sources don't attach timestamps and where the
StreamRecordSerializer ignores the timestamps and does not multiplex Records
and Watermarks.
What do you mean by sampling the stream and attaching timestamps? If we
want to attach timestamps then the whole machinery for dealing with them needs
to be active anyways.
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