[jira] [Updated] (FLINK-6220) Fine-grained copy-on-write for Heap(Map/List)States in CopyOnWriteStateTable

["Konstantin Knauf (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-6220?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Konstantin Knauf updated FLINK-6220:
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      Labels:   (was: auto-closed)
    Priority: Not a Priority  (was: Minor)

> Fine-grained copy-on-write for Heap(Map/List)States in CopyOnWriteStateTable
> ----------------------------------------------------------------------------
>
>                 Key: FLINK-6220
>                 URL: https://issues.apache.org/jira/browse/FLINK-6220
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / State Backends
>    Affects Versions: 1.3.0
>            Reporter: Stefan Richter
>            Priority: Not a Priority
>
> Currently, the copy-on-write mechanism in {{CopyOnWriteStateTable}} uses serializers to create copies of state objects. In case of {{Heap(Map/List)State}}, those state objects are collections, and a deep copy-on-write is performed on those collections as a whole. We can investigate ways to track changes on a more fine grained level, for example deep copy only individual entries in the lists or maps.



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