Scaling Namespaces and Optimizing Data Storage
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Use GZipCodec with a one-time job

You can configure GZipcodec to compress the output of a MapReduce job.

To use GzipCodec with a one-time only job, add the options to configure compression for the MapReduce job and configure GZipCodec for the output of the job.
hadoop jar hadoop-examples-1.1.0-SNAPSHOT.jar sort sbr"" 
sbr "-Dmapred.output.compress=true" 
sbr""sbr -outKey 
-outValue input output