aitozi created FLINK-9507:
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Summary: Introduce ReduceFunction to CEP to minor the cost for
IterativeCondition
Key: FLINK-9507
URL: https://issues.apache.org/jira/browse/FLINK-9507
Project: Flink
Issue Type: Improvement
Components: CEP
Affects Versions: 1.5.0
Reporter: aitozi
Assignee: aitozi
Fix For: 1.6.0
When we use the cep to describe a condition about the events that has been
matched, we have to call the method {code:java}getEventsForPattern{code} to
extract the partly matched elements from the sharedBuffer in RocksDB, which is
very cost, I think we can introduce a ReduceFunction on the pattern desc to
allow us to aggregate the value in advance. Is this practical ？ What's your
guys opinion? [~kkl0u] [~dawidwys]
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