Gakhramanzode commented on PR #16767:
URL: https://github.com/apache/kafka/pull/16767#issuecomment-2470591629
@C0urante @frankvicky
Hello,
I'm encountering an issue that appears to be related to this pull request.
**Context:**
- After upgrading from Kafka 3.6.0 to 3.9.0, our MirrorCheckpointConnector
consistently fails with the error:
```bash
[2024-11-12 16:41:53,084] ERROR [Worker clientId=app-dev->telemetry-dev,
groupId=app-dev-mm2] Failed to reconfigure connector's tasks
(MirrorCheckpointConnector), retrying after backoff.
(org.apache.kafka.connect.runtime.distributed.DistributedHerder:2195)
org.apache.kafka.connect.errors.RetriableException: Timeout while loading
consumer groups.
at
org.apache.kafka.connect.mirror.MirrorCheckpointConnector.taskConfigs(MirrorCheckpointConnector.java:138)
at
org.apache.kafka.connect.runtime.Worker.connectorTaskConfigs(Worker.java:398)
at
org.apache.kafka.connect.runtime.distributed.DistributedHerder.reconfigureConnector(DistributedHerder.java:2243)
at
org.apache.kafka.connect.runtime.distributed.DistributedHerder.reconfigureConnectorTasksWithExponentialBackoffRetries(DistributedHerder.java:2183)
at
org.apache.kafka.connect.runtime.distributed.DistributedHerder.lambda$null$47(DistributedHerder.java:2199)
at
org.apache.kafka.connect.runtime.distributed.DistributedHerder.runRequest(DistributedHerder.java:2402)
at
org.apache.kafka.connect.runtime.distributed.DistributedHerder.tick(DistributedHerder.java:498)
at
org.apache.kafka.connect.runtime.distributed.DistributedHerder.run(DistributedHerder.java:383)
at
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
at
java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:840)
```
- Increasing `admin.timeout.ms` and related timeout settings did not resolve
the issue.
- The problem seems to stem from `knownConsumerGroups` remaining `null`,
causing `taskConfigs()` to throw a `RetriableException`.
**Questions:**
- Alternatively, are there any suggested workarounds to mitigate this issue
in the meantime?
Thank you for your efforts in resolving this problem. Any assistance would
be greatly appreciated.
Best regards
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