[jira] [Created] (FLINK-12492) Minor optimize the cep operator by avoiding unnecessary copy

[Shang Yuanchun (Jira)]

aitozi created FLINK-12492:
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             Summary: Minor optimize the cep operator by avoiding unnecessary copy
                 Key: FLINK-12492
                 URL: https://issues.apache.org/jira/browse/FLINK-12492
             Project: Flink
          Issue Type: Improvement
          Components: Library / CEP
    Affects Versions: 1.9.0
            Reporter: aitozi
            Assignee: aitozi
             Fix For: 1.9.0


When use with rocksdbbackend, we can skip the copy of input events. But to make this more constraint, i add a method in the KeyedStateBackend interface to make this still work id there is added a new backend..



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