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Posted to issues@flink.apache.org by "Fabian Hueske (JIRA)" <ji...@apache.org> on 2015/11/16 14:44:13 UTC
[jira] [Updated] (FLINK-2676) Add abstraction for keyed window
state
[ https://issues.apache.org/jira/browse/FLINK-2676?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Fabian Hueske updated FLINK-2676:
---------------------------------
Fix Version/s: (was: 0.10.0)
1.0.0
> Add abstraction for keyed window state
> --------------------------------------
>
> Key: FLINK-2676
> URL: https://issues.apache.org/jira/browse/FLINK-2676
> Project: Flink
> Issue Type: Sub-task
> Components: Streaming
> Affects Versions: 0.10.0
> Reporter: Stephan Ewen
> Assignee: Stephan Ewen
> Fix For: 1.0.0
>
>
> This abstraction should help to seamlessly switch between window state kept as
> - Heap-resident maps
> - Managed memory spillable maps
> - key/value state backend state
> I would approach this abstraction once we implemented a few window operators and see what operations we need, such as
> - Drop time-regions across all keys
> - Append to state for key
> - Update/replace state by key
> - Iterate over unions of multiple state time regions
> - snapshot time regions completely / incrementally
> - (possibly more)
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