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Jonathan Ellis commented on CASSANDRA-7144: ------------------------------------------- You didn't give a version so I'm not 100% sure but I think you're seeing this assert: {code} int size = rm.modifications.size(); out.writeInt(size); assert size > 0; {code} which means that your client is sending a zero-length mutation to the server. do we not validate that in the native protocol [~thobbs]? > CassandraDaemon RowMutation exception > ------------------------------------- > > Key: CASSANDRA-7144 > URL: https://issues.apache.org/jira/browse/CASSANDRA-7144 > Project: Cassandra > Issue Type: Bug > Components: Core > Environment: Ubuntu 12.04 w/ Oracle JVM, 5 nodes cluster. Nodes 2GB / > 2 Cores in DigitalOcean. > Reporter: Maxime Lamothe-Brassard > > First time reporting a bug here, apologies if I'm not posting it in the right > space. > At what seems like random interval, on random nodes in random situations I > will get the following exception. After this the hinted handoff start timing > out and the node stops participating in the cluster. > I started seeing these after switching to the Cassandra Python-Driver from > the Python-CQL driver. > ERROR [WRITE-/10.128.180.108] 2014-05-03 13:45:12,843 CassandraDaemon.java > (line 198) Exception in thread Thread[WRITE-/10.128.180.108,5,main] > java.lang.AssertionError > at > org.apache.cassandra.db.RowMutation$RowMutationSerializer.serialize(RowMutation.java:271) > at > org.apache.cassandra.db.RowMutation$RowMutationSerializer.serialize(RowMutation.java:259) > at org.apache.cassandra.net.MessageOut.serialize(MessageOut.java:120) > at > org.apache.cassandra.net.OutboundTcpConnection.writeInternal(OutboundTcpConnection.java:251) > at > org.apache.cassandra.net.OutboundTcpConnection.writeConnected(OutboundTcpConnection.java:203) > at > org.apache.cassandra.net.OutboundTcpConnection.run(OutboundTcpConnection.java:151) > ERROR [WRITE-/10.128.194.70] 2014-05-03 13:45:12,843 CassandraDaemon.java > (line 198) Exception in thread Thread[WRITE-/10.128.194.70,5,main] > java.lang.AssertionError > at > org.apache.cassandra.db.RowMutation$RowMutationSerializer.serialize(RowMutation.java:271) > at > org.apache.cassandra.db.RowMutation$RowMutationSerializer.serialize(RowMutation.java:259) > at org.apache.cassandra.net.MessageOut.serialize(MessageOut.java:120) > at > org.apache.cassandra.net.OutboundTcpConnection.writeInternal(OutboundTcpConnection.java:251) > at > org.apache.cassandra.net.OutboundTcpConnection.writeConnected(OutboundTcpConnection.java:203) > at > org.apache.cassandra.net.OutboundTcpConnection.run(OutboundTcpConnection.java:151) > ERROR [MutationStage:118] 2014-05-03 13:45:15,048 CassandraDaemon.java (line > 198) Exception in thread Thread[MutationStage:118,5,main] > java.lang.AssertionError > at > org.apache.cassandra.db.RowMutation$RowMutationSerializer.serialize(RowMutation.java:271) > at > org.apache.cassandra.db.RowMutation$RowMutationSerializer.serialize(RowMutation.java:259) > at > org.apache.cassandra.utils.FBUtilities.serialize(FBUtilities.java:654) > at > org.apache.cassandra.db.HintedHandOffManager.hintFor(HintedHandOffManager.java:137) > at > org.apache.cassandra.service.StorageProxy.writeHintForMutation(StorageProxy.java:908) > at > org.apache.cassandra.service.StorageProxy$6.runMayThrow(StorageProxy.java:881) > at > org.apache.cassandra.service.StorageProxy$HintRunnable.run(StorageProxy.java:1981) > at > java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) > at java.util.concurrent.FutureTask.run(FutureTask.java:262) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) > at java.lang.Thread.run(Thread.java:744) > ERROR [MutationStage:117] 2014-05-03 13:45:15,048 CassandraDaemon.java (line > 198) Exception in thread Thread[MutationStage:117,5,main] > java.lang.AssertionError > at > org.apache.cassandra.db.RowMutation$RowMutationSerializer.serialize(RowMutation.java:271) > at > org.apache.cassandra.db.RowMutation$RowMutationSerializer.serialize(RowMutation.java:259) > at > org.apache.cassandra.utils.FBUtilities.serialize(FBUtilities.java:654) > at > org.apache.cassandra.db.HintedHandOffManager.hintFor(HintedHandOffManager.java:137) > at > org.apache.cassandra.service.StorageProxy.writeHintForMutation(StorageProxy.java:908) > at > org.apache.cassandra.service.StorageProxy$6.runMayThrow(StorageProxy.java:881) > at > org.apache.cassandra.service.StorageProxy$HintRunnable.run(StorageProxy.java:1981) > at > java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) > at java.util.concurrent.FutureTask.run(FutureTask.java:262) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) > at java.lang.Thread.run(Thread.java:744) > The service must be restarted for the node to come back online. Let me know > any additional configuration details needed. -- This message was sent by Atlassian JIRA (v6.2#6252)