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https://issues.apache.org/jira/browse/CASSANDRA-3794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13276319#comment-13276319
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Pavel Yaskevich commented on CASSANDRA-3794:
--------------------------------------------

Yeah, I think that this was the main reason to add that. Although change 
proposed here would only work if CFs simultaneously created on the different 
machines are *not* the same CF otherwise we would have hopeless situation upon 
merge which would break the whole schema. We can't really check what schema 
mutation would lead to before we apply it and try to merge so I don't really 
see what we can do about it...
                
> Change ColumnFamily identifiers to be UUIDs instead of sequential Integers.
> ---------------------------------------------------------------------------
>
>                 Key: CASSANDRA-3794
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3794
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Pavel Yaskevich
>            Assignee: Pavel Yaskevich
>             Fix For: 1.1.1
>
>
> Change ColumnFamily identifiers to be UUIDs instead of sequential Integers. 
> Would be useful in the situation when nodes simultaneously trying to create 
> ColumnFamilies.

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