[FLINK-7001] Improve performance of Sliding Time Window with pane optimization

• Type: Improvement
• Status: Open
• Priority: Not a Priority
• Resolution: Unresolved
• Component/s: API / DataStream
• Labels: auto-deprioritized-major auto-deprioritized-minor
• Assignee: Unassigned
• Reporter: Jark Wu
• Created: 25/Jun/17 14:34
• Updated: 16/Dec/21 22:38

Description

Currently, the implementation of time-based sliding windows treats each window individually and replicates records to each window. For a window of 10 minute size that slides by 1 second the data is replicated 600 fold (10 minutes / 1 second). We can optimize sliding window by divide windows into panes (aligned with slide), so that we can avoid record duplication and leverage the checkpoint.

I will attach a more detail design doc to the issue.

The following issues are similar to this issue: FLINK-5387, FLINK-6990

Issue Links

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