[jira] [Created] (FLINK-5984) Allow reusing of accumulators in AggregateFunction

[Shang Yuanchun (Jira)]

Timo Walther created FLINK-5984:
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             Summary: Allow reusing of accumulators in AggregateFunction
                 Key: FLINK-5984
                 URL: https://issues.apache.org/jira/browse/FLINK-5984
             Project: Flink
          Issue Type: Improvement
          Components: Table API & SQL
            Reporter: Timo Walther


Right now we have to create a new accumulator object if we just want to reset it. We should allow passing the old one as a {{reuse}} object to {{AggregateFunction#createAccumulator}}. The aggregate function then can decide if it wants to create a new object or reset the old one.



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