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From "Jark Wu (Jira)" <j...@apache.org>
Subject [jira] [Assigned] (FLINK-7001) Improve performance of Sliding Time Window with pane optimization
Date Mon, 01 Jun 2020 03:43:00 GMT

     [ https://issues.apache.org/jira/browse/FLINK-7001?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jark Wu reassigned FLINK-7001:
------------------------------

    Assignee:     (was: Jark Wu)

> 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: API / DataStream
>            Reporter: 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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