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https://issues.apache.org/jira/browse/CASSANDRA-6948?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13951080#comment-13951080
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Keith Wright commented on CASSANDRA-6948:
-----------------------------------------
Yes I believe it is true that this is the first time the nodes have ever been
restarted.
> Native & ReplicateOnWriteStage AssertionError: Callback already exists
> ----------------------------------------------------------------------
>
> Key: CASSANDRA-6948
> URL: https://issues.apache.org/jira/browse/CASSANDRA-6948
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Keith Wright
> Assignee: Benedict
> Attachments: 6948.debug.txt, Screen Shot 2014-03-28 at 11.27.56
> AM.png, Screen Shot 2014-03-28 at 11.29.24 AM.png, cassandra.log.min,
> cassandra.yaml, logs.old.tar.gz, logs.tar.gz, system.log.1.gz, system.log.gz
>
>
> We are using the datastax driver and have seen the following exceptions
> appear periodically in our cluster in "groups". The client will gradually
> start sending less write requests to the nodes where this occurs the most
> often. This may be related to CASSANDRA-6476. Exception from logs:
> ERROR [Native-Transport-Requests:7636] 2014-03-28 13:32:10,638
> ErrorMessage.java (line 222) Unexpected exception during request
> java.lang.AssertionError: Callback already exists for id -1665979622!
> (CallbackInfo(target=/10.106.160.84,
> callback=org.apache.cassandra.service.WriteResponseHandler@5d36d8ea,
> serializer=org.apache.cassandra.db.WriteResponse$WriteResponseSerializer@6ed37f0b))
> at
> org.apache.cassandra.net.MessagingService.addCallback(MessagingService.java:549)
> at
> org.apache.cassandra.net.MessagingService.sendRR(MessagingService.java:601)
> at
> org.apache.cassandra.service.StorageProxy.mutateCounter(StorageProxy.java:984)
> at
> org.apache.cassandra.service.StorageProxy.mutate(StorageProxy.java:449)
> at
> org.apache.cassandra.service.StorageProxy.mutateWithTriggers(StorageProxy.java:524)
> at
> org.apache.cassandra.cql3.statements.ModificationStatement.executeWithoutCondition(ModificationStatement.java:521)
> at
> org.apache.cassandra.cql3.statements.ModificationStatement.execute(ModificationStatement.java:505)
> at
> org.apache.cassandra.cql3.QueryProcessor.processStatement(QueryProcessor.java:188)
> at
> org.apache.cassandra.cql3.QueryProcessor.processPrepared(QueryProcessor.java:358)
> at
> org.apache.cassandra.transport.messages.ExecuteMessage.execute(ExecuteMessage.java:131)
> at
> org.apache.cassandra.transport.Message$Dispatcher.messageReceived(Message.java:304)
> at
> org.jboss.netty.handler.execution.ChannelUpstreamEventRunnable.doRun(ChannelUpstreamEventRunnable.java:43)
> at
> org.jboss.netty.handler.execution.ChannelEventRunnable.run(ChannelEventRunnable.java:67)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:744)
> ERROR [ReplicateOnWriteStage:102766] 2014-03-28 13:32:10,638
> CassandraDaemon.java (line 196) Exception in thread
> Thread[ReplicateOnWriteStage:102766,5,main]
> java.lang.AssertionError: Callback already exists for id -1665979620!
> (CallbackInfo(target=/10.106.160.84,
> callback=org.apache.cassandra.service.WriteResponseHandler@3bdb1a75,
> serializer=org.apache.cassandra.db.WriteResponse$WriteResponseSerializer@6ed37f0b))
> at
> org.apache.cassandra.net.MessagingService.addCallback(MessagingService.java:549)
> at
> org.apache.cassandra.net.MessagingService.sendRR(MessagingService.java:601)
> at
> org.apache.cassandra.service.StorageProxy.sendToHintedEndpoints(StorageProxy.java:806)
> at
> org.apache.cassandra.service.StorageProxy$8$1.runMayThrow(StorageProxy.java:1074)
> at
> org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:1896)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:744)
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