Hi, I am benchmarking the cluster using the Terasort package of Hadoop 0.20.2. I enabled compression for both map output (*mapred.compress.map.output*) and reduce output (*mapred.output.compress*). I checked the parameter in Job.xml, both are true. I can see that the compression for Map output works, but it seems that the compression for reduce output does not work. The output of the job on HDFS is also 1TB.
Thanks! - Juwei
