[jira] [Created] (FLINK-5387) Lightweight Event Time Window

[Shang Yuanchun (Jira)]

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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