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https://issues.apache.org/jira/browse/KAFKA-6631?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16509297#comment-16509297
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Ashish Surana commented on KAFKA-6631:
--------------------------------------
The issue is resolved after making some changes to broker settings:
*message.max.bytes=33554432*
*replica.fetch.max.bytes=33554432*
Here these are set to 32MB, but earlier these settings were set to 2MB for us.
Like you explained, broker saves this assignment as one single message in
__consumer_offset topics so the assignment size is also limited by these two
message settings on kafka broker.
Assignment size is directly proportional to number of tasks (we observed that
assignment roughly contains 11KB for each task). We had 512 partitions and 1
replica, so entire assignment size is 11KB * 512(partitions) * 2(1active +
1replica task) ~= 12MB.
I think it would be a good idea to add this into documentation somewhere that
assignment data size (or active tasks + replica tasks) is indirectly limited by
these settings on the broker side.
> Kafka Streams - Rebalancing exception in Kafka 1.0.0
> ----------------------------------------------------
>
> Key: KAFKA-6631
> URL: https://issues.apache.org/jira/browse/KAFKA-6631
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 1.0.0
> Environment: Container Linux by CoreOS 1576.5.0
> Reporter: Alexander Ivanichev
> Priority: Critical
>
>
> In Kafka Streams 1.0.0, we saw a strange rebalance error, our stream app
> performs window based aggregations, sometimes on start when all stream
> workers join the app just crash, however if we enable only one worker than
> it works fine, sometime 2 workers work just fine, but when third join the app
> crashes again, some critical issue with rebalance.
> {code:java}
> 018-03-08T18:51:01.226243000Z org.apache.kafka.common.KafkaException:
> Unexpected error from SyncGroup: The server experienced an unexpected error
> when processing the request
> 2018-03-08T18:51:01.226557000Z at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator$SyncGroupResponseHandler.handle(AbstractCoordinator.java:566)
> 2018-03-08T18:51:01.226860000Z at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator$SyncGroupResponseHandler.handle(AbstractCoordinator.java:539)
> 2018-03-08T18:51:01.227328000Z at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator$CoordinatorResponseHandler.onSuccess(AbstractCoordinator.java:808)
> 2018-03-08T18:51:01.227630000Z at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator$CoordinatorResponseHandler.onSuccess(AbstractCoordinator.java:788)
> 2018-03-08T18:51:01.228152000Z at
> org.apache.kafka.clients.consumer.internals.RequestFuture$1.onSuccess(RequestFuture.java:204)
> 2018-03-08T18:51:01.228449000Z at
> org.apache.kafka.clients.consumer.internals.RequestFuture.fireSuccess(RequestFuture.java:167)
> 2018-03-08T18:51:01.228897000Z at
> org.apache.kafka.clients.consumer.internals.RequestFuture.complete(RequestFuture.java:127)
> 2018-03-08T18:51:01.229196000Z at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient$RequestFutureCompletionHandler.fireCompletion(ConsumerNetworkClient.java:506)
> 2018-03-08T18:51:01.229673000Z at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.firePendingCompletedRequests(ConsumerNetworkClient.java:353)
> 2018-03-08T18:51:01.229971000Z at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:268)
> 2018-03-08T18:51:01.230436000Z at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:214)
> 2018-03-08T18:51:01.230749000Z at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:174)
> 2018-03-08T18:51:01.231065000Z at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator.joinGroupIfNeeded(AbstractCoordinator.java:364)
> 2018-03-08T18:51:01.231584000Z at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureActiveGroup(AbstractCoordinator.java:316)
> 2018-03-08T18:51:01.231911000Z at
> org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.poll(ConsumerCoordinator.java:295)
> 2018-03-08T18:51:01.232190000Z at
> org.apache.kafka.clients.consumer.KafkaConsumer.pollOnce(KafkaConsumer.java:1138)
> 2018-03-08T18:51:01.232643000Z at
> org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1103)
> 2018-03-08T18:51:01.233121000Z at
> org.apache.kafka.streams.processor.internals.StreamThread.pollRequests(StreamThread.java:851)
> 2018-03-08T18:51:01.233409000Z at
> org.apache.kafka.streams.processor.internals.StreamThread.runOnce(StreamThread.java:808)
> 2018-03-08T18:51:01.233720000Z at
> org.apache.kafka.streams.processor.internals.StreamThread.runLoop(StreamThread.java:774)
> 2018-03-08T18:51:01.234196000Z at
> org.apache.kafka.streams.processor.internals.StreamThread.run(StreamThread.java:744)
> 2018-03-08T18:51:01.234655000Z org.apache.kafka.common.KafkaException:
> Unexpected error from SyncGroup: The server experienced an unexpected error
> when processing the request
> 2018-03-08T18:51:01.234972000Z exception in thread, closing process
> 2018-03-08T18:51:01.235500000Z at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator$SyncGroupResponseHandler.handle(AbstractCoordinator.java:566)
> 2018-03-08T18:51:01.235839000Z at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator$SyncGroupResponseHandler.handle(AbstractCoordinator.java:539)
> 2018-03-08T18:51:01.236336000Z at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator$CoordinatorResponseHandler.onSuccess(AbstractCoordinator.java:808)
> 2018-03-08T18:51:01.236603000Z at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator$CoordinatorResponseHandler.onSuccess(AbstractCoordinator.java:788)
> 2018-03-08T18:51:01.236889000Z at
> org.apache.kafka.clients.consumer.internals.RequestFuture$1.onSuccess(RequestFuture.java:204)
> 2018-03-08T18:51:01.237092000Z at
> org.apache.kafka.clients.consumer.internals.RequestFuture.fireSuccess(RequestFuture.java:167)
> 2018-03-08T18:51:01.237531000Z at
> org.apache.kafka.clients.consumer.internals.RequestFuture.complete(RequestFuture.java:127)
> 2018-03-08T18:51:01.237816000Z at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient$RequestFutureCompletionHandler.fireCompletion(ConsumerNetworkClient.java:506)
> 2018-03-08T18:51:01.238097000Z at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.firePendingCompletedRequests(ConsumerNetworkClient.java:353)
> 2018-03-08T18:51:01.238395000Z at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:268)
> 2018-03-08T18:51:01.238698000Z at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:214)
> 2018-03-08T18:51:01.239511000Z exception in thread, closing process
> 2018-03-08T18:51:01.239880000Z exception in thread, closing process
> 2018-03-08T18:51:01.240175000Z at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:174)
> 2018-03-08T18:51:01.240443000Z at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator.joinGroupIfNeeded(AbstractCoordinator.java:364)
> 2018-03-08T18:51:01.240764000Z at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureActiveGroup(AbstractCoordinator.java:316)
> 2018-03-08T18:51:01.241083000Z at
> org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.poll(ConsumerCoordinator.java:295)
> 2018-03-08T18:51:01.241367000Z at
> org.apache.kafka.clients.consumer.KafkaConsumer.pollOnce(KafkaConsumer.java:1138)
> 2018-03-08T18:51:01.241789000Z at
> org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1103)
> 2018-03-08T18:51:01.242075000Z at
> org.apache.kafka.streams.processor.internals.StreamThread.pollRequests(StreamThread.java:851)
> 2018-03-08T18:51:01.242351000Z at
> org.apache.kafka.streams.processor.internals.StreamThread.runOnce(StreamThread.java:808)
> 2018-03-08T18:51:01.242641000Z at
> org.apache.kafka.streams.processor.internals.StreamThread.runLoop(StreamThread.java:774)
> 2018-03-08T18:51:01.243051000Z at
> org.apache.kafka.streams.processor.internals.StreamThread.run(StreamThread.java:744)
> {code}
> On Taking a look further on brokers, I saw another exception:
> {code:java}
> Appending metadata message for group AnomalyKafkaStreams generation 12 failed
> due to org.apache.kafka.common.errors.RecordTooLargeException, returning
> UNKNOWN error code to the client
> (kafka.coordinator.group.GroupMetadataManager)
> {code}
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