Hi Michal, Those ids are stored in system.schema_columnfamilies as part of each column family metadata. Have you tried deleting SSTable files from <cassandra-data-path/system/schema_columnfamilies on failing nodes and restarting them? That should re-fetch schema, also you can try 'nodetool resetschema' command which does just that.
Best Regards -- Pavel Yaskevich On Thursday, December 27, 2012 at 6:28 AM, Michał Czerwiński wrote: > I have this problem (like here > http://www.datastax.com/support-forums/topic/cassandra-does-not-startup) > with duplicated cfIDs in the infromation schema, my whole cluster is > currently down. > I am trying to figure out where those cfIDs stored. > I've manage to hack sstable2json not to throw same exception about > duplicates but cannot find specific CFID which is duplicated. > I am looking at schema_columnfamilies and schema_keyspaces and its not > there... > > Any ideas would be appreciated...