[jira] [Created] (KAFKA-6323) punctuate with WALL_CLOCK_TIME triggered immediately

["Frederic Arno (JIRA)" <ji...@apache.org>]

Frederic Arno created KAFKA-6323:
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             Summary: punctuate with WALL_CLOCK_TIME triggered immediately
                 Key: KAFKA-6323
                 URL: https://issues.apache.org/jira/browse/KAFKA-6323
             Project: Kafka
          Issue Type: Bug
          Components: streams
    Affects Versions: 1.0.0
            Reporter: Frederic Arno
             Fix For: 1.0.1


When working on a custom Processor from which I am scheduling a punctuation using WALL_CLOCK_TIME. I've noticed that whatever the punctuation interval I set, a call to my Punctuator is always triggered immediately.

Having a quick look at kafka-streams' code, I could find that all PunctuationSchedule's timestamps are matched against the current time in order to decide whether or not to trigger the punctuator (org.apache.kafka.streams.processor.internals.PunctuationQueue#mayPunctuate). However, I've only seen code that initializes PunctuationSchedule's timestamp to 0, which I guess is what is causing an immediate punctuation.

At least when using WALL_CLOCK_TIME, shouldn't the PunctuationSchedule's timestamp be initialized to current time + interval?




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