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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-2683) Add utilities for heap-backed keyed state in time panes
Date Sun, 20 Sep 2015 07:46:04 GMT

    [ https://issues.apache.org/jira/browse/FLINK-2683?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14877452#comment-14877452

ASF GitHub Bot commented on FLINK-2683:

Github user gyfora commented on the pull request:

    This is a pretty massive addition, but I am excited :)
    I will try to look through it today and tomorrow!

> Add utilities for heap-backed keyed state in time panes
> -------------------------------------------------------
>                 Key: FLINK-2683
>                 URL: https://issues.apache.org/jira/browse/FLINK-2683
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Streaming
>    Affects Versions: 0.10
>            Reporter: Stephan Ewen
>            Assignee: Stephan Ewen
>             Fix For: 0.10
> Time panes are commonly used for aligned time windows (tumbling and sliding). These utilities
would represent the panes with per-pane keyed state.
> The implementation must support:
>   - Evicting panes efficiently
>   - iterating over the union of all panes' state per key for all keys (computing the
window function for all keys)
>   - efficient append the state for a key in a random pane

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