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

["Edward Ribeiro (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-1684?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12982203#action_12982203 ] 

Edward Ribeiro commented on CASSANDRA-1684:
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CIDR 2011 Megastore paper: http://www.cidrdb.org/cidr2011/Papers/CIDR11_Paper32.pdf

Any development already started on this issue?

> 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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