cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Brandon Williams (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-2245) Enable map reduce to use indexes for ColumnFamilyInputFormat
Date Fri, 25 Feb 2011 01:08:38 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-2245?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12999169#comment-12999169
] 

Brandon Williams commented on CASSANDRA-2245:
---------------------------------------------

An easy way to solve this is CASSANDRA-1600, but we held off on it for 0.7 because we didn't
want to break the thrift API.

> Enable map reduce to use indexes for ColumnFamilyInputFormat
> ------------------------------------------------------------
>
>                 Key: CASSANDRA-2245
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2245
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Hadoop
>    Affects Versions: 0.7.2
>         Environment: Cassandra 0.7 or later and Hadoop 0.20.1 or later
>            Reporter: Matt Kennedy
>            Priority: Minor
>              Labels: hadoop
>             Fix For: 0.8
>
>   Original Estimate: 72h
>  Remaining Estimate: 72h
>
> Enable the ability to run a MapReduce job that takes a value in an indexed column as
a parameter, and use that to select the data that the MapReduce job operates on.  Right now,
it looks like this isn't possible because org.apache.cassandra.hadoop.ColumnFamilyRecordReader
will only fetch data with get_range_slices, not get_indexed_slices.

-- 
This message is automatically generated by JIRA.
-
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message