Collect disk read/write operation from iostat
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Key: HADOOP-5387
URL: https://issues.apache.org/jira/browse/HADOOP-5387
Project: Hadoop Core
Issue Type: New Feature
Components: contrib/chukwa
Environment: Redhat EL 5.1, Java 6
Reporter: Eric Yang
Priority: Minor
In the demux stage, we should collect read/write operation per second from
iostat and populate this information to system metrics.
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