lindong28 opened a new pull request #15161:
URL: https://github.com/apache/flink/pull/15161
## What is the purpose of the change
This PR fixed a few bugs related to `KafkaSource`. See "Brief change log"
for the list of bug fixes made in this PR.
## Brief change log
Bug fixes:
- `KafkaSourceReader` should not commit offsets for partitions whose offsets
have not been initialized.
- `SourceCoordinatorContext` should not log and fail job again if it
receives InterruptedException after it is closed.
- `SourceOperatorStreamTask` should be closed synchronously to avoid
ClassNotFoundException.
- `PartitionOffsetsRetrieverImpl.committedOffsets()` should handle the case
without committed offsets.
- `SourceOperatorStreamTask` should check the committed offset first before
using OffsetResetStrategy.
- Auto offset commit should be disabled by default.
- `SourceCoordinatorContext` should fail job if it fails to send event to
subtasks.
Usability improvements:
- Reduce the offset commit logging verbosity from INFO to DEBUG.
- `SourceOperatorStreamTask` should report numRecordsOutCount.
- `KafkaSourceEnumerator` should close the admin client early if periodic
partition discovery is disabled.
- Remove the unused `close.timeout.ms` config.
Tests:
- Add IT cases for KafkaSource by migrating IT cases from FlinkKafkaConsumer.
## Verifying this change
- Added tests in `KafkaSourceITCase`.
## 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)
- If yes, how is the feature documented? (not applicable)
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