Check this post & my response:
http://stackoverflow.com/questions/31576180/cassandra-2-1-system-schema-missing&ved=0CBoQFjAAahUKEwit6uK1uqHIAhXLcD4KHWsxDK8&usg=AFQjCNFfvPld2OOInC6B_M0X_QpfqHUbxA&sig2=aLeCqqe7vhpQlL10p9WFJA
On Oct 1, 2015 4:33 AM, "kedar" <kedar.par...@netcore.co.in> wrote:
> Got this error again on a single node cassandra.
>
> Would appreciate some pointers.
>
> -------- Forwarded Message -------- Subject: Column family ID mismatch Date:
> Thu, 13 Aug 2015 20:44:04 +0530 From: kedar <kedar.par...@netcore.co.in>
> <kedar.par...@netcore.co.in> Reply-To: user@cassandra.apache.org To:
> user@cassandra.apache.org <user@cassandra.apache.org>
> <user@cassandra.apache.org>
>
> Hi All,
>
> My keyspace is created as:
>
> CREATE KEYSPACE <some_keyspace> WITH replication = {'class':
> 'SimpleStrategy', 'replication_factor': '2'} AND durable_writes = true;
>
> However I am running a single node cluster:
>
> ./nodetool status <some_keyspace>
> Datacenter: datacenter1
> =======================
> Status=Up/Down
> |/ State=Normal/Leaving/Joining/Moving
> -- Address Load Tokens Owns (effective) Host
> ID Rack
> XX XXX.XXX.XXX.XX 3.73 GB 256 100.0% <uid> rack1
>
> And things were still running fine till today we encountered:
>
> ERROR [MigrationStage:1] 2015-08-13 01:58:49,249 CassandraDaemon.java:153
> - Exception in thread Thread[MigrationStage:1,5,main]
> java.lang.RuntimeException:
> org.apache.cassandra.exceptions.ConfigurationException: Column family ID
> mismatch (found <uid>; expected <uid>)
> at
> org.apache.cassandra.config.CFMetaData.reload(CFMetaData.java:1125)
> ~[apache-cassandra-2.1.2.jar:2.1.2]
> at
> org.apache.cassandra.db.DefsTables.updateColumnFamily(DefsTables.java:422)
> ~[apache-cassandra-2.1.2.jar:2.1.2]
> at
> org.apache.cassandra.db.DefsTables.mergeColumnFamilies(DefsTables.java:295)
> ~[apache-cassandra-2.1.2.jar:2.1.2]
> at
> org.apache.cassandra.db.DefsTables.mergeSchemaInternal(DefsTables.java:194)
> ~[apache-cassandra-2.1.2.jar:2.1.2]
> at
> org.apache.cassandra.db.DefsTables.mergeSchema(DefsTables.java:166)
> ~[apache-cassandra-2.1.2.jar:2.1.2]
> at
> org.apache.cassandra.service.MigrationManager$2.runMayThrow(MigrationManager.java:393)
> ~[apache-cassandra-2.1.2.jar:2.1.2]
> at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
> ~[apache-cassandra-2.1.2.jar:2.1.2]
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
> ~[na:1.7.0_65]
> at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> ~[na:1.7.0_65]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> ~[na:1.7.0_65]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> [na:1.7.0_65]
> at java.lang.Thread.run(Thread.java:745) [na:1.7.0_65]
> Caused by: org.apache.cassandra.exceptions.ConfigurationException: Column
> family ID mismatch (found <uid>; expected <uid>)
> at
> org.apache.cassandra.config.CFMetaData.validateCompatility(CFMetaData.java:1208)
> ~[apache-cassandra-2.1.2.jar:2.1.2]
> at
> org.apache.cassandra.config.CFMetaData.apply(CFMetaData.java:1140)
> ~[apache-cassandra-2.1.2.jar:2.1.2]
> at
> org.apache.cassandra.config.CFMetaData.reload(CFMetaData.java:1121)
> ~[apache-cassandra-2.1.2.jar:2.1.2]
> ... 11 common frames omitted
>
>
> Did notetool repair, probably didn't work so after few mins did a restart
> and then the problem went away.
>
> Need help in understanding what caused it and how it was resolved.
>
> Thanks
>
>
>
>
