Github user gyfora commented on the pull request:
https://github.com/apache/flink/pull/1347#issuecomment-156098004
I am wondering whether in this form the ListState is a useful abstraction
to have.
It has a very forgiving definition of a list: It only supports adding
values (ever growing) and no removing or any other List operation that I think
would be just as common.
Also I think other collection types such as Sets and Maps are similarly
common and those are not covered by this.
Maybe a better approach would be to make a very generic collection state
type that supports all the different operations which could then be used to
implement ListState, SetState, MapState etc.
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