ERROR [MigrationStage:1] 2013-04-02 15:22:06,187 CassandraDaemon.java (line 164) Exception in thread Thread[MigrationStage:1,5,main]
java.lang.IllegalStateException: One row required, 0 found
	at org.apache.cassandra.cql3.UntypedResultSet.one(UntypedResultSet.java:59)
	at org.apache.cassandra.config.KSMetaData.fromSchema(KSMetaData.java:262)
	at org.apache.cassandra.db.DefsTable.mergeKeyspaces(DefsTable.java:397)
	at org.apache.cassandra.db.DefsTable.mergeSchema(DefsTable.java:353)
	at org.apache.cassandra.service.MigrationManager$2.runMayThrow(MigrationManager.java:299)
	at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
	at java.util.concurrent.FutureTask.run(FutureTask.java:166)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:679)
ERROR [Thrift:16] 2013-04-02 15:22:06,188 CustomTThreadPoolServer.java (line 217) Error occurred during processing of message.
java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.IllegalStateException: One row required, 0 found
	at org.apache.cassandra.utils.FBUtilities.waitOnFuture(FBUtilities.java:377)
	at org.apache.cassandra.service.MigrationManager.announce(MigrationManager.java:281)
	at org.apache.cassandra.service.MigrationManager.announceKeyspaceDrop(MigrationManager.java:262)
	at org.apache.cassandra.thrift.CassandraServer.system_drop_keyspace(CassandraServer.java:1377)
	at org.apache.cassandra.thrift.Cassandra$Processor$system_drop_keyspace.getResult(Cassandra.java:3982)
	at org.apache.cassandra.thrift.Cassandra$Processor$system_drop_keyspace.getResult(Cassandra.java:3970)
	at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:32)
	at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:34)
	at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:199)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:679)
Caused by: java.util.concurrent.ExecutionException: java.lang.IllegalStateException: One row required, 0 found
	at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:252)
	at java.util.concurrent.FutureTask.get(FutureTask.java:111)
	at org.apache.cassandra.utils.FBUtilities.waitOnFuture(FBUtilities.java:373)
	... 11 more
Caused by: java.lang.IllegalStateException: One row required, 0 found
	at org.apache.cassandra.cql3.UntypedResultSet.one(UntypedResultSet.java:59)
	at org.apache.cassandra.config.KSMetaData.fromSchema(KSMetaData.java:262)
	at org.apache.cassandra.db.DefsTable.mergeKeyspaces(DefsTable.java:397)
	at org.apache.cassandra.db.DefsTable.mergeSchema(DefsTable.java:353)
	at org.apache.cassandra.service.MigrationManager$2.runMayThrow(MigrationManager.java:299)
	at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
	at java.util.concurrent.FutureTask.run(FutureTask.java:166)
	... 3 more