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From "Kay Kay (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-2324) Refactoring of TableRecordReader (mapred / mapreduce) for reuse outside the scope of InputSplit / RecordReader
Date Sun, 14 Mar 2010 08:01:27 GMT

     [ https://issues.apache.org/jira/browse/HBASE-2324?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kay Kay updated HBASE-2324:
---------------------------

    Attachment: HBASE-2324.patch

> Refactoring of TableRecordReader (mapred / mapreduce) for reuse outside the scope of
InputSplit / RecordReader 
> ---------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-2324
>                 URL: https://issues.apache.org/jira/browse/HBASE-2324
>             Project: Hadoop HBase
>          Issue Type: Improvement
>            Reporter: Kay Kay
>         Attachments: HBASE-2324.patch
>
>
> For the storing of tf-idf in hbase ( lucene-hbase project) we need to scan the keys across
the table and retrieve columnar values.  Quite an amount of logic can be reused from TableRecordReader
for the purpose. 
> - Refactored TableRecordReader ( from being a protected inner class to a public class
outside ) 
> - Created an impl class , that does the actual work, without the dependency on hadop.mapreduce.*
packages ( RecordReader) while retaining the implementation that can be reused across libraries.

> Do the same thing for .mapred. and .mapreduce. packages. 
> Let me know the thoughts on the same. 

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