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Posted to commits@cassandra.apache.org by "Michael Koziarski (JIRA)" <ji...@apache.org> on 2009/08/02 05:08:14 UTC

[jira] Updated: (CASSANDRA-334) Temporally Ordered Sub columns in a SuperColumnFamily

     [ https://issues.apache.org/jira/browse/CASSANDRA-334?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Koziarski updated CASSANDRA-334:
----------------------------------------

    Attachment: cassandra-334-koz-first.diff

Aforementioned patch

> Temporally Ordered Sub columns in a SuperColumnFamily
> -----------------------------------------------------
>
>                 Key: CASSANDRA-334
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-334
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Michael Koziarski
>         Attachments: cassandra-334-koz-first.diff
>
>
> Since the switch to typed column names and CompareSubcolumnsWith we no longer have a simple way to order entries in a super column / column family by their creation time.  This makes things like 'timelines' harder to implement.
> After discussions on IRC / twitter it appears we could achieve this with a new comparator for UUIDTypes which checks their temporal order before just falling back on their lexical order.

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