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Posted to commits@cassandra.apache.org by "Jonathan Ellis (Commented) (JIRA)" <ji...@apache.org> on 2011/11/23 17:25:40 UTC
[jira] [Commented] (CASSANDRA-1684) Entity groups
[ https://issues.apache.org/jira/browse/CASSANDRA-1684?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13155949#comment-13155949 ]
Jonathan Ellis commented on CASSANDRA-1684:
-------------------------------------------
Do we really need row groups now that we can have arbitrary nesting within a row via composite columns? Looked at that way the row key itself becomes the "entity group id."
> 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: 1.1
>
> 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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