Elias Levy created FLINK-11520:
----------------------------------
Summary: Triggers should be provided the window state
Key: FLINK-11520
URL: https://issues.apache.org/jira/browse/FLINK-11520
Project: Flink
Issue Type: Improvement
Reporter: Elias Levy
Some triggers may require access to the window state to perform their job.
Consider a window computing a count using an aggregate function. It may be
desired to fire the window when the count is 1 and then at the end of the
window. The early firing can provide feedback to external systems that a key
has been observed, while waiting for the final count.
The same problem can be observed in
org.apache.flink.streaming.api.windowing.triggers.CountTrigger, which must
maintain an internal count instead of being able to make use of the window
state.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
