[HDFS-11502] Datanode UI should display hostname based on JMX bean instead of window.location.hostname

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.7.2, 2.7.3
• Fix Version/s: 2.9.0, 3.0.0-beta1, 2.8.2
• Component/s: hdfs

Environment

all

• Target Version/s: 2.8.2
• Hadoop Flags: Reviewed
• Assignee: Jeffrey E Rodriguez
• Reporter: Jeffrey E Rodriguez
• Created: 06/Mar/17 19:21
• Updated: 13/Jul/17 03:32
• Resolved: 13/Jul/17 00:03

Description

Datanode UI calls "dn.js" which loads properties for datanode. "dn.js" sets "data.dn.HostName" datanode UI to "window.location.hostname", it should use a datanode property from jmx beans or an appropriate property. The issue is
that if we use a proxy to access datanode UI we would show proxy hostanme instead of actual datanode hostname.
I am proposing using Hadoop:service=DataNode,name=JvmMetrics" tag.Hostname field to do that.