[jira] [Updated] (CASSANDRA-998) Replace SuperColumn and ColumnFamily structures

["Jocelyn Racoillet (Updated) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-998?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jocelyn Racoillet updated CASSANDRA-998:
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    Comment: was deleted

(was: Note to people looking for an alternative to SuperColumns, this looks promising: composite columns and CompositeType comparer (CASSANDRA-2231).)
    
> Replace SuperColumn and ColumnFamily structures
> -----------------------------------------------
>
>                 Key: CASSANDRA-998
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-998
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Stu Hood
>            Assignee: Stu Hood
>             Fix For: 0.8 beta 1
>
>
> The most important concepts to come out of CASSANDRA-674 were the Slice, Metadata and ColumnKey structures.
> As a replacement for SuperColumns and ColumnFamilies in the current codebase, Slices can addtionally:
> * Represent arbitrarily nested columns
> * Allow for eventually consistent range deletes (equivalent to a CF containing multiple 'markedForDelete' values)
> * Be used for memory efficient compactions, since they encapsulate nesting and can be iterated
> * Eliminate code duplication for SuperColumn handling
> This is an umbrella ticket for the task of replacing the SuperColumn and ColumnFamily datastructures in the codebase, preferably with something like Slice.

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