The webui of namenode should include Rack column in the live datanodes table
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Key: HDFS-1090
URL: https://issues.apache.org/jira/browse/HDFS-1090
Project: Hadoop HDFS
Issue Type: Improvement
Components: name-node
Reporter: luoli
It is a great feature that hadoop support rack-aware, but in the default webui
of namenode, their is no column in the live datanodes table to show what rack
the datanode belongs to. This is not convenient for a cluster which has
configed the rack info of the cluster. This can solve easily, just add it in
the dfshealth.jsp, and also for the convenient of sort the live datanode table
on the column of rack, we can just add it in the JspHelper.java.
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