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https://issues.apache.org/jira/browse/CASSANDRA-389?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12748461#action_12748461
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Jonathan Ellis commented on CASSANDRA-389:
------------------------------------------

> Which is the "wrong" version: the legacy version? 

any version that is not the current version.  (I used "z")

having "legacy" be distinguished from "current" is probably a mistake since you 
then have to special case it.

> 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
>
>         Attachments: 389-v3.patch, CASSANDRA-389.diff, CASSANDRA-389.diff
>
>
> 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>-<VERSION>-<DATA|INDEX|FILTER>

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