[jira] Updated: (CASSANDRA-1684) Entity groups

["Jonathan Ellis (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-1684?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Ellis updated CASSANDRA-1684:
--------------------------------------

    Remaining Estimate: 80h
     Original Estimate: 80h

> Entity groups
> -------------
>
>                 Key: CASSANDRA-1684
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1684
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: Sylvain Lebresne
>             Fix For: 0.8
>
>   Original Estimate: 80h
>  Remaining Estimate: 80h
>
> Supporting entity groups similar to App Engine's (that is, allow rows to be part of a parent "entity group," whose key is used for routing instead of the row itself) allows several improvements:
>  - batches within an EG can be atomic across multiple rows
>  - order-by-value queries within an EG only have to touch a single replica even with RandomPartitioner

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