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From "Brandon Williams (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-4369) Sortable counter type for 'top N' type query use cases
Date Sun, 24 Jun 2012 19:40:42 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-4369?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Brandon Williams updated CASSANDRA-4369:
----------------------------------------

    Labels: ponies  (was: )
    
> Sortable counter type for 'top N' type query use cases
> ------------------------------------------------------
>
>                 Key: CASSANDRA-4369
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4369
>             Project: Cassandra
>          Issue Type: New Feature
>            Reporter: Ahmet AKYOL
>              Labels: ponies
>
> Current counter type is not sortable by values, AFAIK. Here's a related question :
> http://stackoverflow.com/questions/8428364/how-to-get-sorted-counters-from-cassandra
> This feature can be very handy for 'top N' type query use cases like sorting user points
and finding top users in a reputation system.
> Of course, support in CQL 3 is trivial.
> IMHO, from implementation point of view, this looks unnatural to C* since C* sorts column
names not the values.Maybe a composite column solution like (counter,char) is more proper
but I can't imagine a way to make this work right now, it doesn't make sense to me. On the
other hand, it would be very useful for us, the users.

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