1996fanrui opened a new pull request, #27783:
URL: https://github.com/apache/flink/pull/27783
## What is the purpose of the change
[FLINK-38930][checkpoint] Filtering record before processing without
spilling strategy
## Brief change log
Core filtering mechanism for recovered channel state buffers:
- ChannelStateFilteringHandler with per-gate GateFilterHandler
- RecordFilterContext with VirtualChannelRecordFilterFactory
- Partial data check in SequentialChannelStateReaderImpl
- Fix RecordFilterContext for Union downscale scenario
## Verifying this change
- Tons of unit 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
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