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From "Sam Tunnicliffe (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-4613) Utilise Secondary Indexes in ColumnFamilyRecordReader
Date Tue, 04 Sep 2012 19:13:07 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-4613?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sam Tunnicliffe updated CASSANDRA-4613:
---------------------------------------

    Attachment: 0001-Utilise-Secondary-Indexes-in-ColumnFamilyRecordReader.txt
    
> Utilise Secondary Indexes in ColumnFamilyRecordReader
> -----------------------------------------------------
>
>                 Key: CASSANDRA-4613
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4613
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Hadoop
>            Reporter: Sam Tunnicliffe
>            Assignee: Sam Tunnicliffe
>             Fix For: 1.1.5
>
>         Attachments: 0001-Utilise-Secondary-Indexes-in-ColumnFamilyRecordReader.txt
>
>
> Enable an IndexClause to be passed to ColumnFamilyRecordReader by serializing it and
adding to the Hadoop job Configuration. This is a requirement for enabling Filter Pushdown[1]
in Hive which can vastly reduce the number of scanned rows that need to be processed in the
Hive layer.
> [1] https://cwiki.apache.org/Hive/filterpushdowndev.html

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