ruanhang1993 opened a new pull request #16974:
URL: https://github.com/apache/flink/pull/16974
## What is the purpose of the change
This pull request add new test data generator to the kafka connector test
cases, it supports generating data without timestamps. Besides that, we are
able to supply different ways to generate test data.
## Brief change log
- add test data generating function which don't need timestamps to
`KafkaSourceTestEnv`
- modify `setupTopic` method in `KafkaSourceTestEnv`, support supplying a
function to generate test data
- modify the related code wihch used the `setupTopic` method
## 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**)
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