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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-6996) Allow CodecFactory to return a codec object given a codec' class name
Date Mon, 11 Oct 2010 18:31:32 GMT
Allow CodecFactory to return a codec object given a codec' class name
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                 Key: HADOOP-6996
                 URL: https://issues.apache.org/jira/browse/HADOOP-6996
             Project: Hadoop Common
          Issue Type: New Feature
          Components: io
    Affects Versions: 0.22.0
            Reporter: Hairong Kuang
            Assignee: Hairong Kuang
             Fix For: 0.22.0


CodecFactory specify the list of codec that are supported by Hadoop. However, it returns a
codec only by a file's name. I would like to make getCodec method to alternatively take a
codec's class name.

This is required by  HDFS-1435, where
1. it allows an HDFS admin to configure which codec to use to save an image. 
2. It stores the codec class name in its on-disk image instead of a file's suffix.

When saving and reading an image, I'd like to get an codec from CodecFactory by its class
name. 

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