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

["Rong Rong (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-7001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16464239#comment-16464239 ] 

Rong Rong commented on FLINK-7001:
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Hi [~jark], 

Is there a FLIP being proposed based on the pain points discussed in here? 
This inefficiency in windowing has been observed more and more frequently in our day-to-day operations lately.

We would like to contribute to the design and the implementation of this improvement if possible :-)

Thanks,
Rong

> 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
>            Priority: Major
>
> 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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