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Date: Wed, 28 Oct 2009 00:18:59 +0000 (UTC)
From: "dhruba borthakur (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
Subject: [jira] Created: (HADOOP-6338) Utility to tail the contents of a
 directory
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Utility to tail the contents of a directory
-------------------------------------------

                 Key: HADOOP-6338
                 URL: https://issues.apache.org/jira/browse/HADOOP-6338
             Project: Hadoop Common
          Issue Type: Improvement
            Reporter: dhruba borthakur
            Assignee: dhruba borthakur


There is an existing utility "bin/hadoop fs -tail -f <filename>" that prints the last few records from the specified file. A map-reduce application uses a directory as a data-set and it creates multiple files in a HDFS directory. I am proposing that we extend  "bin/hadoop fs -tail -f <directory>" to tail the contents of a directory. The files in the directory can be sorted (lexicographically, or based on modtimes) to arrive at the virtual sequence of the set of files inside the directory. 

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