GitHub user StephanEwen opened a pull request:
https://github.com/apache/flink/pull/3243
[FLINK-5024] [core] Refactor the interface of State and StateDescriptor
This is a refactored version of #2768
This pull request splits the `StateDescriptor`:
- Basic `StateDescriptor`: This only contains only the information
- The `SimpleStateDescriptor` is the base of all currently used states
and holds the information about a single serializer, for the state type.
- This prepares for a future `CompositeStateDescriptor` that would have
multiple serializers, such as for the upcoming `MapState`.
This is technically not API-breaking, since it only touches methods with
`@PublicEvolving` annotations.
We should think carefully, though, because this may affect all users that
use the state API on `RuntimeContext` and on the `TriggerContext` (in custom
windows).
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/StephanEwen/incubator-flink
xiaogang_state_descriptor
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/3243.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #3243
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commit 58e5bce6a4adf99a10b2256ff624a7da23e27a80
Author: xiaogang.sxg <[email protected]>
Date: 2017-01-26T18:44:32Z
[FLINK-5024] [core] Refactor the interface of State and StateDescriptor
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