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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-1125) Filter out ColumnFamily rows that aren't part of the query (using a KeyRange)
Date Tue, 12 Jul 2011 20:21:00 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1125?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13064118#comment-13064118
] 

Hudson commented on CASSANDRA-1125:
-----------------------------------

Integrated in Cassandra-0.8 #214 (See [https://builds.apache.org/job/Cassandra-0.8/214/])
    add KeyRangeoption to Hadoop inputformat
patch by Mck SembWever; reviewed by jbellis for CASSANDRA-1125

jbellis : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1145731
Files : 
* /cassandra/branches/cassandra-0.8/CHANGES.txt
* /cassandra/branches/cassandra-0.8/src/java/org/apache/cassandra/hadoop/ConfigHelper.java
* /cassandra/branches/cassandra-0.8/src/java/org/apache/cassandra/hadoop/ColumnFamilyInputFormat.java


> 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: 0.8.2
>
>         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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