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Posted to issues@flink.apache.org by "Till Rohrmann (JIRA)" <ji...@apache.org> on 2016/02/02 14:34:39 UTC

[jira] [Created] (FLINK-3317) Add timeout handler to CEP operator

Till Rohrmann created FLINK-3317:
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             Summary: Add timeout handler to CEP operator
                 Key: FLINK-3317
                 URL: https://issues.apache.org/jira/browse/FLINK-3317
             Project: Flink
          Issue Type: Improvement
          Components: CEP
    Affects Versions: 1.0.0
            Reporter: Till Rohrmann
            Priority: Minor


Currently, event sequences which exceed the defined pattern timeout will be discarded. However, in some cases the user might be interested in getting to know when such a timeout occurred to return a default value for these event sequences.

Thus, the pattern API should be extended to be able to define a timeout handler. Furthermore, the {{NFA}} has to be extended to also return the discarded event sequences. The {{CEPOperator}} would then call for every discarded event sequence the timeout handler.



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