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Posted to commits@cassandra.apache.org by "Mck SembWever (JIRA)" <ji...@apache.org> on 2011/07/10 23:41:59 UTC
[jira] [Commented] (CASSANDRA-1125) Filter out ColumnFamily rows
that aren't part of the query (using a KeyRange)
[ https://issues.apache.org/jira/browse/CASSANDRA-1125?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13062814#comment-13062814 ]
Mck SembWever commented on CASSANDRA-1125:
------------------------------------------
Created CASSANDRA-2878 for the better solution using a IndexClause
> Filter out ColumnFamily rows that aren't part of the query (using a KeyRange)
> -----------------------------------------------------------------------------
>
> Key: CASSANDRA-1125
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1125
> Project: Cassandra
> Issue Type: New Feature
> Components: Hadoop
> Reporter: Jeremy Hanna
> Assignee: Mck SembWever
> Priority: Minor
> Fix For: 1.0
>
> Attachments: 1125-formatted.txt, 1125-v3.txt, CASSANDRA-1125.patch, CASSANDRA-1125.patch
>
>
> Currently, when running a MapReduce job against data in a Cassandra data store, it reads through all the data for a particular ColumnFamily. This could be optimized to only read through those rows that have to do with the query.
> It's a small change but wanted to put it in Jira so that it didn't fall through the cracks.
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