[jira] [Commented] (CASSANDRA-13149) AssertionError prepending to a list

["Alex Petrov (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-13149?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15858022#comment-15858022 ] 

Alex Petrov commented on CASSANDRA-13149:
-----------------------------------------

Do you have NTP on that server? ({{System#currentTimeMillis}} is not monotonic, so that _might_ be causing that, just need to understand how to reproduce that)

> AssertionError prepending to a list
> -----------------------------------
>
>                 Key: CASSANDRA-13149
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13149
>             Project: Cassandra
>          Issue Type: Bug
>          Components: CQL
>         Environment: 3.0.8
>            Reporter: Steven Warren
>
> Prepending to a list produces the following AssertionError randomly. Changing the update to append (and sort in the client) works around the issue.
> {code}
> java.lang.AssertionError: null
> 	at org.apache.cassandra.cql3.Lists$PrecisionTime.getNext(Lists.java:275) ~[apache-cassandra-3.0.8.jar:3.0.8]
> 	at org.apache.cassandra.cql3.Lists$Prepender.execute(Lists.java:430) ~[apache-cassandra-3.0.8.jar:3.0.8]
> 	at org.apache.cassandra.cql3.statements.UpdateStatement.addUpdateForKey(UpdateStatement.java:94) ~[apache-cassandra-3.0.8.jar:3.0.8]
> 	at org.apache.cassandra.cql3.statements.ModificationStatement.addUpdates(ModificationStatement.java:682) ~[apache-cassandra-3.0.8.jar:3.0.8]
> 	at org.apache.cassandra.cql3.statements.ModificationStatement.getMutations(ModificationStatement.java:613) ~[apache-cassandra-3.0.8.jar:3.0.8]
> 	at org.apache.cassandra.cql3.statements.ModificationStatement.executeWithoutCondition(ModificationStatement.java:420) ~[apache-cassandra-3.0.8.jar:3.0.8]
> 	at org.apache.cassandra.cql3.statements.ModificationStatement.execute(ModificationStatement.java:408) ~[apache-cassandra-3.0.8.jar:3.0.8]
> 	at org.apache.cassandra.cql3.QueryProcessor.processStatement(QueryProcessor.java:206) ~[apache-cassandra-3.0.8.jar:3.0.8]
> 	at org.apache.cassandra.cql3.QueryProcessor.processPrepared(QueryProcessor.java:487) ~[apache-cassandra-3.0.8.jar:3.0.8]
> 	at org.apache.cassandra.cql3.QueryProcessor.processPrepared(QueryProcessor.java:464) ~[apache-cassandra-3.0.8.jar:3.0.8]
> 	at org.apache.cassandra.transport.messages.ExecuteMessage.execute(ExecuteMessage.java:130) ~[apache-cassandra-3.0.8.jar:3.0.8]
> 	at org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:507) [apache-cassandra-3.0.8.jar:3.0.8]
> 	at org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:401) [apache-cassandra-3.0.8.jar:3.0.8]
> 	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) [netty-all-4.0.23.Final.jar:4.0.23.Final]
> 	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:333) [netty-all-4.0.23.Final.jar:4.0.23.Final]
> 	at io.netty.channel.AbstractChannelHandlerContext.access$700(AbstractChannelHandlerContext.java:32) [netty-all-4.0.23.Final.jar:4.0.23.Final]
> 	at io.netty.channel.AbstractChannelHandlerContext$8.run(AbstractChannelHandlerContext.java:324) [netty-all-4.0.23.Final.jar:4.0.23.Final]
> 	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_101]
> 	at org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:164) [apache-cassandra-3.0.8.jar:3.0.8]
> 	at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105) [apache-cassandra-3.0.8.jar:3.0.8]
> 	at java.lang.Thread.run(Thread.java:745) [na:1.8.0_101]
> {code}



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