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From Pavel Yaskevich <>
Subject Re: A quick newbie disaster question: Where do I find cfIDs?
Date Thu, 27 Dec 2012 17:47:09 GMT
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
> 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...  

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