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From "Aljoscha Krettek (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-5809) Add registerNextWatermarkCallback() to TimerService
Date Wed, 15 Feb 2017 14:49:42 GMT
Aljoscha Krettek created FLINK-5809:
---------------------------------------

             Summary: Add registerNextWatermarkCallback() to TimerService
                 Key: FLINK-5809
                 URL: https://issues.apache.org/jira/browse/FLINK-5809
             Project: Flink
          Issue Type: Bug
          Components: DataStream API
            Reporter: Aljoscha Krettek


This new method is similar to {{registerEventTimeTimer()}} but instead of specifying a certain
time where the timer should fire this will simply fire whenever a new watermark arrives.

This is, for example, useful when you want to buffer elements for sorting by event time and
always want to emit as soon as the operator receives a watermark.



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