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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-499) Avoid the use of Strings to improve the performance of hadoop streaming
Date Thu, 31 Aug 2006 21:09:23 GMT
Avoid the use of Strings to improve the  performance of hadoop streaming
------------------------------------------------------------------------

                 Key: HADOOP-499
                 URL: http://issues.apache.org/jira/browse/HADOOP-499
             Project: Hadoop
          Issue Type: Improvement
          Components: contrib/streaming
    Affects Versions: 0.5.0
            Reporter: Hairong Kuang
         Assigned To: Hairong Kuang
             Fix For: 0.6.0


In hadoop streaming, a record is represented as a String for  I/O and is encoded as UTF8 for
map/reduce. A record has to be converted between String and UTF8 back and forth multiple times
and  this wastes CPU time. 

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