I've traced this down to attempting to prepend to a list field. I was able to workaround the issue by appending (and then sorting on query). Prepending seems to build a timeuuid to manage the change, and it's that step that produces the assertionerror (sometimes).
On Thu, Jan 19, 2017 at 10:56 AM sfesc...@gmail.com <sfesc...@gmail.com> wrote: > The first time a client connects to the cluster and sends a bunch of > inserts in parallel I get this assertion error. All subsequent inserts > (including just retrying the first requests) work fine. The only assert in > PrecisionTime is checking if the millis argument is <= the current millis. > What could cause this to not be true, and what can I do to avoid/fix it? > > 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] >
