[jira] [Created] (FLINK-3758) Add possibility to register accumulators in custom triggers

[Shang Yuanchun (Jira)]

Konstantin Knauf created FLINK-3758:
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             Summary: Add possibility to register accumulators in custom triggers
                 Key: FLINK-3758
                 URL: https://issues.apache.org/jira/browse/FLINK-3758
             Project: Flink
          Issue Type: Improvement
            Reporter: Konstantin Knauf
            Priority: Minor


For monitoring purposes it would be nice to be able to to use accumulators in custom trigger functions.

Basically, the trigger context could just expose {{getAccumulator}} of {{RuntimeContext}} or does this create problems I am not aware of?

Adding accumulators in a trigger function is more difficult, I think, but that's not really neccessary as the accummulator could just be added in some other upstream operator.



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