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From "Sylvain Lebresne (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-2614) create Column and CounterColumn in the same column family
Date Mon, 09 May 2011 07:44:03 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-2614?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13030638#comment-13030638
] 

Sylvain Lebresne commented on CASSANDRA-2614:
---------------------------------------------

To be more specific, the idea is for instance to allow counter in a non-counter CF with something
like
{noformat}
column_metadata =   [
   {column_name: first, validation_class: UTF8Type},
   {column_name: last, validation_class: UTF8Type},
   {column_name: friends, validation_class: CounterColumnType}   ];
{noformat}
In which case we know when we expect a counter and when we do not. Moreover the code already
handle mixing counter and non counter mutations in a batch_mutate, so most of the handling
of the different write path is already there. We will still have to "extract" the counter
column for this so that it goes through the correct write path, but that can be done while
we translate the thrift structures to our internal representations.

> create Column and CounterColumn in the same column family
> ---------------------------------------------------------
>
>                 Key: CASSANDRA-2614
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2614
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Dave Rav
>            Assignee: Sylvain Lebresne
>            Priority: Minor
>             Fix For: 0.8.1
>
>
> create Column and CounterColumn in the same column family

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