meijies opened a new pull request #14468:
URL: https://github.com/apache/flink/pull/14468
## What is the purpose of the change
This pull request make the jdbc dynamic table flush the data in buffer to
table when checkpoint.
## Brief change log
- Wrap the ```JdbcBatchingOutputFormat``` to
```GenericJdbcSinkFunction```, make flush method can be called when snapshot.
## Verifying this change
This change added tests and can be verified as follows:
- Added a unit tests for the data in buffer is flushed to database when
snapshot.
## 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/Mesos, ZooKeeper: (no)
- The S3 file system connector: (no)
## Documentation
- Does this pull request introduce a new feature? (no)
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