dengziming opened a new pull request #10250:
URL: https://github.com/apache/kafka/pull/10250
*More detailed description of your change*
Found that the `fatalException` is always null when calling `log.info("xxx",
fatalException)`, maybe we should first assign a value to it.
*Summary of testing strategy (including rationale)*
Test locally.
from
```
[2021-03-03 10:18:06,203] INFO FindCoordinator request hit fatal exception
(org.apache.kafka.clients.consumer.internals.AbstractCoordinatorTest$DummyCoordinator:260)
```
to
```
[2021-03-03 10:17:37,123] INFO FindCoordinator request hit fatal exception
(org.apache.kafka.clients.consumer.internals.AbstractCoordinatorTest$DummyCoordinator:260)
org.apache.kafka.common.errors.AuthenticationException: Authentication failed
```
### Committer Checklist (excluded from commit message)
- [ ] Verify design and implementation
- [ ] Verify test coverage and CI build status
- [ ] Verify documentation (including upgrade notes)
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