Rafał Gała created CAMEL-17798:
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             Summary: Offsets resetting
                 Key: CAMEL-17798
                 URL: https://issues.apache.org/jira/browse/CAMEL-17798
             Project: Camel
          Issue Type: Bug
          Components: camel-kafka
    Affects Versions: 3.15.0
            Reporter: Rafał Gała


After upgrading to 3.15.0 we began to experience lots of situations where 
offsets on topics get reset when one of the JVMs running Camel gets shut down 
(Camel is shut down gracefully, we have at least 2 JVMs running in parallel 
that consume events from topics for the same consumer group). This is a problem 
when a topic contains milions of events because we need tio retrieve all of 
them again. We have auto commit enabled and do not use any manual commit 
management.

This what gets logged on a running JVM when we shut down the other one:
{noformat}
2022-03-15 09:59:40.285 [Camel (camel-1) thread #17 - KafkaConsumer[*masked*]] 
INFO  
org.apache.kafka.clients.consumer.internals.Fetcher.handleOffsetOutOfRange:1413 
- [Consumer clientId=consumer-*masked*-40, groupId=*masked*] Fetch position 
FetchPosition{offset=0, offsetEpoch=Optional.empty, 
currentLeader=LeaderAndEpoch{leader=Optional[*masked*:9093 (id: 2 rack: O66)], 
epoch=643}} is out of range for partition *masked*-3, resetting offset 

2022-03-15 09:59:40.519 [kafka-coordinator-heartbeat-thread | *masked*] INFO  
org.apache.kafka.clients.consumer.internals.SubscriptionState.maybeSeekUnvalidated:398
 - [Consumer clientId=consumer-*masked*-40, groupId=*masked*] Resetting offset 
for partition *masked*-3 to position FetchPosition{offset=2193522, 
offsetEpoch=Optional.empty, 
currentLeader=LeaderAndEpoch{leader=Optional[*masked*:9093 (id: 2 rack: O66)], 
epoch=643}}.{noformat}
This does not occur on 3.14.2. I believe this may be related to commit manager 
introduced in 3.15.0, but I have not managed to confirm it yet.



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