Syinchwun Leo created FLINK-5387:
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Summary: Lightweight Event Time Window
Key: FLINK-5387
URL: https://issues.apache.org/jira/browse/FLINK-5387
Project: Flink
Issue Type: Improvement
Components: DataStream API
Affects Versions: 1.1.3
Reporter: Syinchwun Leo
When a new data coming and insert into Event Time Window, windowSize/slide
subWindows are generated. and the data is copied to all of these subWindows.
When the value of windowSize/slide is very big, redundancy is large, and this
will slow the RocksDB's checkpoint. Event Window should redesigned, and
candidate design is similar as Session window, only generating a pane(aligned
with slide) when a new data come instead of generating a series of subWindows
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