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From "Stu Hood (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-1821) Allow Map/Reduce functionality over multiple column families
Date Sun, 05 Dec 2010 01:32:11 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1821?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12966878#action_12966878
] 

Stu Hood commented on CASSANDRA-1821:
-------------------------------------

I would think that this would be better handled by their processing framework (Pig, Hive),
unless I'm misunderstanding your suggestion.

> Allow Map/Reduce functionality over multiple column families
> ------------------------------------------------------------
>
>                 Key: CASSANDRA-1821
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1821
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Hadoop
>            Reporter: Jeremy Hanna
>
> Currently, the ColumnFamilyRecordReader can only retrieve slice predicates from a single
column family.  With analytics, it's likely that people will want to map/reduce over multiple
column families.

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