Aljoscha Krettek created FLINK-3581:
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Summary: Add Non-Keyed Window Trigger
Key: FLINK-3581
URL: https://issues.apache.org/jira/browse/FLINK-3581
Project: Flink
Issue Type: Improvement
Components: Streaming
Reporter: Aljoscha Krettek
Assignee: Aljoscha Krettek
The current Window Trigger is per key. Meaning every window has a (logical)
Trigger for every key in the window, i.e. there will be state and time triggers
per key per window.
For some types of windows, i.e. based on time it is possible to use a single
Trigger to fire for all keys at the same time. In that case we would save a lot
of space on state and timers. Which makes state snapshots a lot smaller.
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