[HDFS-11994] Hadoop NameNode Web UI throws "Failed to retrieve data from /jmx?qry=java.lang:type=Memory, cause:" When running behind a proxy

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 2.8.0
• Component/s: ui

Environment

CentOS release 6.9 (Final)
OpenJDK version "1.8.0_131"
Hadoop 2.8.0

• Assignee: Unassigned
• Reporter: Sergey Bahchissaraitsev
• Created: 19/Jun/17 13:24
• Updated: 18/Sep/19 18:33

Description

When running behind a proxy Hadoop Web UI throws the following exception because it tries to make Ajax requests to the base server URL:

Failed to retrieve data from /jmx?qry=java.lang:type=Memory, cause:

A good solution could be to adjust the Ajax URL based on the actual window URL using the jQuery Ajax "beforeSend" pre-request callback function: http://api.jquery.com/jquery.ajax/