wanglijie95 opened a new pull request, #21779:
URL: https://github.com/apache/flink/pull/21779
## What is the purpose of the change
Fix the performance regression described in FLINK-30624.
```
before this fix:
Benchmark (stateBackend) Mode Cnt
Score Error Units
MemoryStateBackendBenchmark.stateBackends MEMORY thrpt 30
3936.158 ± 65.696 ops/ms
MemoryStateBackendBenchmark.stateBackends FS thrpt 30
3963.934 ± 64.942 ops/ms
MemoryStateBackendBenchmark.stateBackends FS_ASYNC thrpt 30
3930.955 ± 68.809 ops/ms`
after this fix:
Benchmark (stateBackend) Mode Cnt
Score Error Units
MemoryStateBackendBenchmark.stateBackends MEMORY thrpt 30
4151.066 ± 80.526 ops/ms
MemoryStateBackendBenchmark.stateBackends FS thrpt 30
4143.619 ± 65.212 ops/ms
MemoryStateBackendBenchmark.stateBackends FS_ASYNC thrpt 30
4161.912 ± 44.701 ops/ms
```
## 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, 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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