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https://issues.apache.org/jira/browse/KAFKA-6817?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16460142#comment-16460142
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Wouter Bancken edited comment on KAFKA-6817 at 5/1/18 8:56 PM:
---------------------------------------------------------------

We seem to be running into a similar issue. 

We are using one Kafka Producer which is a long-running bean with idempotence 
enabled.

The exception that we are getting is 
{code}
kafka-producer-network-thread | producer-1] ERROR 
apache.kafka.clients.producer.internals.Sender - [Producer clientId=producer-1] 
The broker returned org.apache.kafka.common.errors.UnknownProducerIdException: 
This exception is raised by the broker if it could not locate the producer 
metadata associated with the producerId in question. This could happen if, for 
instance, the producer's records were deleted because their retention time had 
elapsed. Once the last records of the producerId are removed, the producer's 
metadata is removed from the broker, and future appends by the producer will 
return this exception. for topic-partition company.company-alias-0 at offset 
-1. This indicates data loss on the broker, and should be investigated.

Caused by: org.apache.kafka.common.errors.UnknownProducerIdException: This 
exception is raised by the broker if it could not locate the producer metadata 
associated with the producerId in question. This could happen if, for instance, 
the producer's records were deleted because their retention time had elapsed. 
Once the last records of the producerId are removed, the producer's metadata is 
removed from the broker, and future appends by the producer will return this 
exception. 
{code}

We have no knowledge of issues on the broker that might have caused any data 
loss. We are using Kafka 1.0.0


was (Author: wouterbanckenaca):
We seem to be running into a similar issue. 

We are using one Kafka Producer which is a long-running bean with idempotence 
enabled.

The exception that we are getting is 
{code}
kafka-producer-network-thread | producer-1] ERROR 
apache.kafka.clients.producer.internals.Sender - [Producer clientId=producer-1] 
The broker returned org.apache.kafka.common.errors.UnknownProducerIdException: 
This exception is raised by the broker if it could not locate the producer 
metadata associated with the producerId in question. This could happen if, for 
instance, the producer's records were deleted because their retention time had 
elapsed. Once the last records of the producerId are removed, the producer's 
metadata is removed from the broker, and future appends by the producer will 
return this exception. for topic-partition company.company-alias-0 at offset 
-1. This indicates data loss on the broker, and should be investigated.

Caused by: org.apache.kafka.common.errors.UnknownProducerIdException: This 
exception is raised by the broker if it could not locate the producer metadata 
associated with the producerId in question. This could happen if, for instance, 
the producer's records were deleted because their retention time had elapsed. 
Once the last records of the producerId are removed, the producer's metadata is 
removed from the broker, and future appends by the producer will return this 
exception. 
{code}

We have no knowledge of issues on the broker that might have caused any data 
loss.

> UnknownProducerIdException when writing messages with old timestamps
> --------------------------------------------------------------------
>
>                 Key: KAFKA-6817
>                 URL: https://issues.apache.org/jira/browse/KAFKA-6817
>             Project: Kafka
>          Issue Type: Bug
>          Components: producer 
>    Affects Versions: 1.1.0
>            Reporter: Odin Standal
>            Priority: Major
>
> We are seeing the following exception in our Kafka application: 
> {code:java}
> ERROR o.a.k.s.p.internals.StreamTask - task [0_0] Failed to close producer 
> due to the following error: org.apache.kafka.streams.errors.StreamsException: 
> task [0_0] Abort sending since an error caught with a previous record (key 
> 222222 value some-value timestamp 1519200902670) to topic 
> exactly-once-test-topic- v2 due to This exception is raised by the broker if 
> it could not locate the producer metadata associated with the producerId in 
> question. This could happen if, for instance, the producer's records were 
> deleted because their retention time had elapsed. Once the last records of 
> the producerId are removed, the producer's metadata is removed from the 
> broker, and future appends by the producer will return this exception. at 
> org.apache.kafka.streams.processor.internals.RecordCollectorImpl.recordSendError(RecordCollectorImpl.java:125)
>  at 
> org.apache.kafka.streams.processor.internals.RecordCollectorImpl.access$500(RecordCollectorImpl.java:48)
>  at 
> org.apache.kafka.streams.processor.internals.RecordCollectorImpl$1.onCompletion(RecordCollectorImpl.java:180)
>  at 
> org.apache.kafka.clients.producer.KafkaProducer$InterceptorCallback.onCompletion(KafkaProducer.java:1199)
>  at 
> org.apache.kafka.clients.producer.internals.ProducerBatch.completeFutureAndFireCallbacks(ProducerBatch.java:204)
>  at 
> org.apache.kafka.clients.producer.internals.ProducerBatch.done(ProducerBatch.java:187)
>  at 
> org.apache.kafka.clients.producer.internals.Sender.failBatch(Sender.java:627) 
> at 
> org.apache.kafka.clients.producer.internals.Sender.failBatch(Sender.java:596) 
> at 
> org.apache.kafka.clients.producer.internals.Sender.completeBatch(Sender.java:557)
>  at 
> org.apache.kafka.clients.producer.internals.Sender.handleProduceResponse(Sender.java:481)
>  at 
> org.apache.kafka.clients.producer.internals.Sender.access$100(Sender.java:74) 
> at 
> org.apache.kafka.clients.producer.internals.Sender$1.onComplete(Sender.java:692)
>  at 
> org.apache.kafka.clients.ClientResponse.onComplete(ClientResponse.java:101) 
> at 
> org.apache.kafka.clients.NetworkClient.completeResponses(NetworkClient.java:482)
>  at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:474) at 
> org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:239) at 
> org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:163) at 
> java.lang.Thread.run(Thread.java:748) Caused by: 
> org.apache.kafka.common.errors.UnknownProducerIdException
> {code}
> We discovered this error when we had the need to reprocess old messages. See 
> more details on 
> [Stackoverflow|https://stackoverflow.com/questions/49872827/unknownproduceridexception-in-kafka-streams-when-enabling-exactly-once?noredirect=1#comment86901917_49872827]
> We have reproduced the error with a smaller example application. The error 
> occurs after 10 minutes of producing messages that have old timestamps (type 
> 1 year old). The topic we are writing to has a retention.ms set to 1 year so 
> we are expecting the messages to stay there.
> After digging through the ProducerStateManager-code in the Kafka source code 
> we have a theory of what might be wrong.
> The ProducerStateManager.removeExpiredProducers() seems to remove producers 
> from memory erroneously when processing records which are older than the 
> maxProducerIdExpirationMs (coming from the `transactional.id.expiration.ms` 
> configuration), which is set by default to 7 days. 



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