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Posted to dev@flink.apache.org by "Jark Wu (JIRA)" <ji...@apache.org> on 2017/06/25 14:35:00 UTC

[jira] [Created] (FLINK-7001) Improve performance of Sliding Time Window with pane optimization

Jark Wu created FLINK-7001:
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             Summary: Improve performance of Sliding Time Window with pane optimization
                 Key: FLINK-7001
                 URL: https://issues.apache.org/jira/browse/FLINK-7001
             Project: Flink
          Issue Type: Improvement
          Components: DataStream API
            Reporter: Jark Wu
            Assignee: Jark Wu
             Fix For: 1.4.0


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



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