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Rong Rong commented on FLINK-7001:
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Thanks for the inspiration from [~pgrulich] and [~aljoscha]. I have put
together a preliminary design doc and 2 different POCs for optimizing the
sliding window. This document covers contents beyond this JIRA. However I would
like to continue the discussions in this thread to see if this is the right
direction to go with.
Please take a look at the doc here:
https://docs.google.com/document/d/1ziVsuW_HQnvJr_4a9yKwx_LEnhVkdlde2Z5l6sx5HlY/edit?usp=sharing
Any comments and suggestions are highly appreciated!
> 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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