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https://issues.apache.org/jira/browse/FLINK-6220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17321664#comment-17321664
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Flink Jira Bot commented on FLINK-6220:
---------------------------------------
This issue and all of its Sub-Tasks have not been updated for 180 days. So, it
has been labeled "stale-minor". If you are still affected by this bug or are
still interested in this issue, please give an update and remove the label. In
7 days the issue will be closed automatically.
> 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: Minor
> Labels: stale-minor
>
> 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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