Zakelly opened a new pull request, #27160:
URL: https://github.com/apache/flink/pull/27160
## What is the purpose of the change
The `StateBackend#isSafeToReuseKVState` is exposed to SQL layer to indicate
whether it can perform object reuse. Currently it does not consider the heap
timer when using RocksDB/ForSt, which may cause checkpoint broken as the
FLINK-38558 describes. This PR fixes the implementation.
## Brief change log
- Change `StateBackend#isSafeToReuseKVState` to consider heap timer factory.
## Verifying this change
This change is a trivial rework and changes the corresponding test of
`StateBackendTestBase`.
## 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, Kubernetes/Yarn, ZooKeeper: no
- 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
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