[CASSANDRA-10254] 3.0 paging states are incompatible with pre-3.0 nodes

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 3.0.0 rc1
• Component/s: Legacy/CQL
• Severity: Normal
• Assignee: Sylvain Lebresne
• Reporter: Blake Eggleston

Authors

Sylvain Lebresne

Reviewers

Benjamin Lerer

• Created: 03/Sep/15 03:29
• Updated: 16/Apr/19 09:30
• Resolved: 18/Sep/15 11:26

Description

When running the upgrade dtest TestCQL.static_columns_with_distinct_test, the client appears to be passing in an invalid paging state (no cell name). Instead of catching the problem in validation and returning an error to the client, the select statement tries to run it, causing this exception:

ERROR QueryMessage.java:135 - Unexpected error during query
java.lang.ClassCastException: org.apache.cassandra.db.composites.Composites$EmptyComposite cannot be cast to org.apache.cassandra.db.composites.CellName
	at org.apache.cassandra.service.pager.SliceQueryPager.<init>(SliceQueryPager.java:64) ~[main/:na]
	at org.apache.cassandra.service.pager.MultiPartitionPager.makePager(MultiPartitionPager.java:93) ~[main/:na]
	at org.apache.cassandra.service.pager.MultiPartitionPager.<init>(MultiPartitionPager.java:75) ~[main/:na]
	at org.apache.cassandra.service.pager.QueryPagers.pager(QueryPagers.java:102) ~[main/:na]
	at org.apache.cassandra.service.pager.QueryPagers.pager(QueryPagers.java:126) ~[main/:na]
	at org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:228) ~[main/:na]
	at org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:67) ~[main/:na]
	at org.apache.cassandra.cql3.QueryProcessor.processStatement(QueryProcessor.java:238) ~[main/:na]
	at org.apache.cassandra.cql3.QueryProcessor.process(QueryProcessor.java:260) ~[main/:na]
	at org.apache.cassandra.transport.messages.QueryMessage.execute(QueryMessage.java:122) ~[main/:na]
	at org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:439) [main/:na]
	at org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:335) [main/:na]
	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_40]
	at org.apache.cassandra.concurrent.AbstractTracingAwareExecutorService$FutureTask.run(AbstractTracingAwareExecutorService.java:164) [main/:na]
	at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105) [main/:na]
	at java.lang.Thread.run(Thread.java:745) [na:1.8.0_40]

Running

 UPGRADE_MODE=none nosetests upgrade_tests/cql_tests.py:TestCQL.static_columns_with_distinct_test

should cause the error.