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Date: Tue, 8 Aug 2006 14:24:13 -0700 (PDT)
From: "Benjamin Reed (JIRA)" <jira@apache.org>
To: hadoop-dev@lucene.apache.org
Subject: [jira] Created: (HADOOP-433) Better access to the RecordReader
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Better access to the RecordReader
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                 Key: HADOOP-433
                 URL: http://issues.apache.org/jira/browse/HADOOP-433
             Project: Hadoop
          Issue Type: Improvement
          Components: mapred
    Affects Versions: 0.5.0
            Reporter: Benjamin Reed
            Priority: Minor


The record reader has access to the FileSplit which can in turn have information that is useful to the Mapper. For example, Map processing may vary according to file name or attributes associated with a file. Unfortunately, even using a MapRunner you only have access to the progress wrapper of the RecordReader. To get access to the real record reader I had to use a thread local variable which I set in RecordReader.getNext(). It would be much nicer if you could get a reference to the real RecordReader from the RecordReader passed to MapRunner.

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