Fix HDFS throughput stat.
Fix HDFS throughput stat.

Change-Id: I864996b759171eeeae056f9caf357a71a44c5ddc
Reviewed-on: http://gerrit.sjc.cloudera.com:8080/5882
Tested-by: jenkins
Reviewed-by: Lenni Kuff <724b7df200764f5dc1b723c05ee6c6adabd11bb1@cloudera.com>

cloudera/recordservice,cloudera/recordservice,cloudera/recordservice,cloudera/recordservice,cloudera/recordservice,cloudera/recordservice,cloudera/recordservice