Batch mutation of counters in multiple supercolumns throws an exception during 
replication.
-------------------------------------------------------------------------------------------

                 Key: CASSANDRA-2949
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2949
             Project: Cassandra
          Issue Type: Bug
          Components: Core
    Affects Versions: 0.8.2
            Reporter: Sam Overton
            Priority: Critical


Steps to reproduce:
* Perform a batch mutation of more than one counter in more than one 
super-column in the same column-family.
* The following exception is thrown during replication:

DEBUG [MutationStage:63] 2011-07-26 17:05:12,653 
CounterMutationVerbHandler.java (line 52) Applying forwarded 
CounterMutation(RowMutation(keyspace='ks1', key='4ae71336e44bf9bf', 
modifications=[ColumnFamily(cf1 [SuperColumn(302c7375706572636f6c30 
[302c636f6c30:false:8@1311696312648,]),SuperColumn(302c7375706572636f6c31 
[302c636f6c30:false:8@1311696312648,]),])]), QUORUM)
DEBUG [MutationStage:63] 2011-07-26 17:05:12,653 StorageProxy.java (line 432) 
insert writing local & replicate CounterMutation(RowMutation(keyspace='ks1', 
key='4ae71336e44bf9bf', modifications=[cf1]), QUORUM)
DEBUG [MutationStage:63] 2011-07-26 17:05:12,654 Table.java (line 398) applying 
mutation of row 4ae71336e44bf9bf
ERROR [ReplicateOnWriteStage:125] 2011-07-26 17:05:12,655 
AbstractCassandraDaemon.java (line 139) Fatal exception in thread 
Thread[ReplicateOnWriteStage:125,5,main]
java.lang.RuntimeException: java.lang.IllegalArgumentException: ColumnFamily 
ColumnFamily(cf1 [SuperColumn(302c7375706572636f6c31 
[302c636f6c30:false:[{cad93dc0-b7a0-11e0-0000-123f813dd5df, 3, 
3}*]@1311696312648!-9223372036854775808,]),]) already has modifications in this 
mutation: ColumnFamily(cf1 [SuperColumn(302c7375706572636f6c30 
[302c636f6c30:false:[{cad93dc0-b7a0-11e0-0000-123f813dd5df, 3, 
3}*]@1311696312648!-9223372036854775808,]),])
        at 
org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:34)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
        at java.lang.Thread.run(Thread.java:636)
Caused by: java.lang.IllegalArgumentException: ColumnFamily ColumnFamily(cf1 
[SuperColumn(302c7375706572636f6c31 
[302c636f6c30:false:[{cad93dc0-b7a0-11e0-0000-123f813dd5df, 3, 
3}*]@1311696312648!-9223372036854775808,]),]) already has modifications in this 
mutation: ColumnFamily(cf1 [SuperColumn(302c7375706572636f6c30 
[302c636f6c30:false:[{cad93dc0-b7a0-11e0-0000-123f813dd5df, 3, 
3}*]@1311696312648!-9223372036854775808,]),])
        at org.apache.cassandra.db.RowMutation.add(RowMutation.java:123)
        at 
org.apache.cassandra.db.CounterMutation.makeReplicationMutation(CounterMutation.java:120)
        at 
org.apache.cassandra.service.StorageProxy$5$1.runMayThrow(StorageProxy.java:455)
        at 
org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
        ... 3 more


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