Github user mjsax commented on the pull request:
https://github.com/apache/flink/pull/1483#issuecomment-171790057
Ok. I will try to rework this to the custom operator approach...
About your last statement: We could decide to omit this information in the
Storm compatibility layer (and drop this PR completely) -- of course, this
would limits the "compatibility level" we can achieve.
Btw: Storm does not give the "channel index" itself to the user, but the
task-id of the parallel producer task attached to each input tuple (in Storm,
task-ids are unique over all tasks over all operators of the topology). The
compatibility will translate the "channel index" into this task-id (using the
"channel index" is the only way I see to get this done in the compatibility
layer).
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