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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-389) SSTable Versioning
Date Tue, 25 Aug 2009 15:59:59 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-389?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12747472#action_12747472
] 

Jonathan Ellis commented on CASSANDRA-389:
------------------------------------------

note that it's important to make versions alphabetic (not numeric or alphanumeric) b/c generation
is already numeric, so keeping those in separate vocabularies will help catch potential errors

> SSTable Versioning
> ------------------
>
>                 Key: CASSANDRA-389
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-389
>             Project: Cassandra
>          Issue Type: Improvement
>    Affects Versions: 0.4
>            Reporter: Chris Goffinet
>            Assignee: Stu Hood
>            Priority: Minor
>             Fix For: 0.4
>
>
> As we continue to make changes to the on-disk format of SSTables, I propose we start
versioning. The easiest way without breaking backwards compatibility is to store the version
in the filename. This would allow us to figure out the version without looking at the SSTable
data. After speaking to Jonathan here is the proposed example:
> <CF>-<ID>-<DATA|INDEX|FILTER>-<VERSION>

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