[jira] [Commented] (CASSANDRA-1983) Make sstable filenames contain a UUID instead of increasing integer

["Daniel Shelepov (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-1983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13900054#comment-13900054 ] 

Daniel Shelepov commented on CASSANDRA-1983:
--------------------------------------------

Is this still needed?  Naming in 2.0+ is still incremental as far as I can tell.  

I'd like to work on this fix while I'm learning the codebase.

> Make sstable filenames contain a UUID instead of increasing integer
> -------------------------------------------------------------------
>
>                 Key: CASSANDRA-1983
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1983
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: David King
>            Priority: Minor
>
> sstable filenames look like CFName-1569-Index.db, containing an integer for uniqueness. This makes it possible (however unlikely) that the integer could overflow, which could be a problem. It also makes it difficult to collapse multiple nodes into a single one with rsync. I do this occasionally for testing: I'll copy our 20 node cluster into only 3 nodes by copying all of the data files and running cleanup; at present this requires a manual step of uniqifying the overlapping sstable names. If instead of an incrementing integer, it would be handy if these contained a UUID or somesuch that guarantees uniqueness across the cluster.



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