The HDFS webUI should show a metric that summarizes whether the cluster is
balanced regarding disk space usage
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Key: HDFS-853
URL: https://issues.apache.org/jira/browse/HDFS-853
Project: Hadoop HDFS
Issue Type: Improvement
Components: name-node
Reporter: dhruba borthakur
It is desirable to know how much the datanodes vary form one another in terms
of space utilization to get a sense of how well a HDFS cluster is balanced.
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