[HDFS-853] The HDFS webUI should show a metric that summarizes whether the cluster is balanced regarding disk space usage

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.22.0
• Component/s: namenode
• Hadoop Flags: Reviewed
• Assignee: Dmytro Molkov
• Reporter: Dhruba Borthakur
• Created: 24/Dec/09 18:22
• Updated: 12/Dec/11 06:19
• Resolved: 10/May/10 19:25

Description

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.