yunfengzhou-hub opened a new pull request, #22462:
URL: https://github.com/apache/flink/pull/22462
## What is the purpose of the change
This pull request fixes the bug that the metric numRecordsOut is increased
twice in `SourceOperatorStreamTask` and in `ChainingOutput`, which was
introduced in #21579.
## Brief change log
- Removes the process to increase numRecordsOut in
`SourceOperatorStreamTask`.
- Modifies `SourceMetricsITCase` to verify the correctness of this metric on
SourceOperator.
## Verifying this change
The correctness of the changes in this pull request is covered by the test
class `SourceMetricsITCase`.
## 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): yes
- 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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