GitHub user StefanRRichter opened a pull request:
https://github.com/apache/flink/pull/6308
[FLINK-9799] Generalize and unify state meta info snapshot
## What is the purpose of the change
This PR generalizes and unifies the de/serialization of state meta
information in backends. We replace the snapshots and reader/writers of the
individual state types with a general `StateMetaInfoSnapshot` and the
corresponding `StateMetaInfoSnapshotReadersWriters`. Backwards compatibility is
maintained.
## Verifying this change
This change is already covered by existing tests.
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): (no)
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: (no)
- The serializers: (no)
- The runtime per-record code paths (performance sensitive): (no)
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes)
- The S3 file system connector: (no)
## Documentation
- Does this pull request introduce a new feature? (no)
- If yes, how is the feature documented? (not applicable)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/StefanRRichter/flink
FLINK-9799-generalize-state-meta-pr
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/6308.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 #6308
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commit 5e44f759342793f4532e99f8df589c2416402176
Author: Stefan Richter <s.richter@...>
Date: 2018-07-11T09:11:11Z
[FLINK-9799][state] Generalize and unify state meta infos
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