Stefan Richter created FLINK-6220:
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Summary: 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
Affects Versions: 1.3.0
Reporter: Stefan Richter
Priority: 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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