Github user ramkrish86 commented on the issue:
https://github.com/apache/flink/pull/2301
Created two interfaces EventTimeFunction and a WindowTimer (interface). The
WindowTimer interface allows users to implement their own watermark timers and
the way they could be fired. The EventTimeFunction could be used with any user
defined functions and allows the creation of the WindowTimer. So the
WindowOperator will see if the UDF is EventTimeFunction and uses the
WindowTimer created by the EventimeFunction. If not it will use the
DefaultTimer as in the current case. I ran mvn verify to ensure there are no
checkstyle or compilation errors.
@aljoscha
Any feedback/ suggestions? This will now allow users to customize the
timers.
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