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https://issues.apache.org/jira/browse/CASSANDRA-6948?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13951103#comment-13951103
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Keith Wright commented on CASSANDRA-6948:
-----------------------------------------
Great, now that all nodes have been restarted, I'll make sure to let you know
if I see the issue again. In fact, I'm planning on bootstrapping some more
nodes next week so I'll also validate that restart after bootstrap ensures the
issue does not occur. Any chance this is somehow related to the issue where
I'm not seeing DDLs apply across all nodes even though they're shown as
successful?
> 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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