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From "Ryan McGuire (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-5334) NullPointerException in a mixed 1.1 / 1.2 cluster
Date Mon, 11 Mar 2013 22:31:13 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-5334?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13599406#comment-13599406
] 

Ryan McGuire commented on CASSANDRA-5334:
-----------------------------------------

I've added a [dtest|https://github.com/riptano/cassandra-dtest/commit/4432c02cc09fb61adce3121a72429132bcc29451]
to test this scenario as well.
                
> NullPointerException in a mixed 1.1 / 1.2 cluster
> -------------------------------------------------
>
>                 Key: CASSANDRA-5334
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5334
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 1.1.9
>            Reporter: Ryan McGuire
>
> I have a mixed version cluster consisting of two 1.1.9 nodes and one 1.2.2 node upgraded
from 1.1.9. 
> The upgrade works, and I don't see any problems end user problems, however I see this
exception in the logs on the non-upgraded nodes:
> {code}
> ERROR [MigrationStage:1] 2013-03-11 18:09:09,001 AbstractCassandraDaemon.java (line 135)
Exception in thread Thread[MigrationStage:1,5,main]
> java.lang.NullPointerException
> 	at org.apache.cassandra.utils.ByteBufferUtil.string(ByteBufferUtil.java:167)
> 	at org.apache.cassandra.utils.ByteBufferUtil.string(ByteBufferUtil.java:124)
> 	at org.apache.cassandra.cql.jdbc.JdbcUTF8.getString(JdbcUTF8.java:77)
> 	at org.apache.cassandra.cql.jdbc.JdbcUTF8.compose(JdbcUTF8.java:97)
> 	at org.apache.cassandra.db.marshal.UTF8Type.compose(UTF8Type.java:35)
> 	at org.apache.cassandra.cql3.UntypedResultSet$Row.getString(UntypedResultSet.java:87)
> 	at org.apache.cassandra.config.KSMetaData.fromSchema(KSMetaData.java:256)
> 	at org.apache.cassandra.db.DefsTable.mergeKeyspaces(DefsTable.java:397)
> 	at org.apache.cassandra.db.DefsTable.mergeSchema(DefsTable.java:373)
> 	at org.apache.cassandra.db.DefsTable.mergeRemoteSchema(DefsTable.java:352)
> 	at org.apache.cassandra.db.DefinitionsUpdateVerbHandler$1.runMayThrow(DefinitionsUpdateVerbHandler.java:48)
> 	at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
> 	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)
> 	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> 	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> 	at java.lang.Thread.run(Thread.java:662)
> {code}
> Steps to reproduce:
> {code}
> ccm create -v 1.1.9 1.1.9
> ccm populate -n 3
> ccm start
> ccm node1 stress
> ccm node1 down
> {code}
> edit ~/.ccm/1.1.9/cluster.conf and configure cassandra_dir to point to 1.2.2
> {code}
> ccm node1 up
> {code}
> The cluster is now a mixed version, and works for user queries, but with the exception
above.

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