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Date: Sun, 9 Jan 2011 21:07:45 -0500 (EST)
From: "Jonathan Ellis (JIRA)" <jira@apache.org>
To: commits@cassandra.apache.org
Subject: [jira] Updated: (CASSANDRA-1936) Fit partitioned counter directly
 into CounterColumn.value
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     [ https://issues.apache.org/jira/browse/CASSANDRA-1936?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Ellis updated CASSANDRA-1936:
--------------------------------------

    Remaining Estimate: 16h
     Original Estimate: 16h

> Fit partitioned counter directly into CounterColumn.value 
> ----------------------------------------------------------
>
>                 Key: CASSANDRA-1936
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1936
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Sylvain Lebresne
>            Assignee: Sylvain Lebresne
>             Fix For: 0.8
>
>         Attachments: 0001-Put-partitioned-counter-directly-in-column-value.patch, 1936-ALT-0001-lazily-materialize-value.patch
>
>   Original Estimate: 16h
>  Remaining Estimate: 16h
>
> The current implementation of CounterColumn keeps both the partitioned
> counter and the total value of the counter (that is, the sum of the parts of
> the partitioned counter).
> This waste space and this requires the code to keep both representation in
> sync. This ticket propose to remove the total value from the representation
> and to only calculate it when returning the value to the client.
> NOTE: this breaks the on-disk file format (for counters)

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