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Posted to dev@flink.apache.org by "Vijayakumar Palaniappan (JIRA)" <ji...@apache.org> on 2017/04/11 17:45:41 UTC

[jira] [Created] (FLINK-6297) CEP timeout does not trigger under certain conditions

Vijayakumar Palaniappan created FLINK-6297:
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             Summary: CEP timeout does not trigger under certain conditions
                 Key: FLINK-6297
                 URL: https://issues.apache.org/jira/browse/FLINK-6297
             Project: Flink
          Issue Type: Bug
    Affects Versions: 1.2.0
            Reporter: Vijayakumar Palaniappan


-TimeoutPattern does not trigger under certain conditions. Following are the preconditions: 

-Assume a pattern of Event A followed by Event B within 2 Seconds

-PeriodicWaterMarks every 1 second

-Assume following events have arrived. 

-Event A-1[time: 1 sec]

-Event B-1[time: 2 sec] 

-Event A-2[time: 2 sec]

-Event A-3[time: 5 sec] 

-WaterMark[time: 5 sec]

I would assume that after watermark arrival, Event A-1,B-1 detected. A-2 timed out. But A-2 timeout does not happen.

if i use a punctuated watermark and generate watermark for every event, it seems to work as expected.



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