[HDFS-4860] Add additional attributes to JMX beans

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.20.204.1, 2.1.0-beta, 2.0.4-alpha, 3.0.0-alpha1
• Fix Version/s: 2.3.0
• Component/s: namenode
• Target Version/s: 2.1.0-beta
• Assignee: Trevor Lorimer
• Reporter: Trevor Lorimer
• Created: 23/May/13 23:34
• Updated: 12/May/16 18:14
• Resolved: 05/Jul/13 21:41

Description

Currently the JMX bean returns much of the data contained on the HDFS Health webpage (dfsHealth.html). However there are several other attributes that are required to be added.

I intend to add the following items to the appropriate bean in parenthesis :
Started time (NameNodeInfo),
Compiled info (NameNodeInfo),
Jvm MaxHeap, MaxNonHeap (JvmMetrics)
Node Usage stats (i.e. Min, Median, Max, stdev) (NameNodeInfo),
Count of decommissioned Live and Dead nodes (FSNamesystemState),
Journal Status (NodeNameInfo)

Issue Links

• blocks: HADOOP-9562 Create REST interface for HDFS health data
• is related to: HDFS-5216 NumDecomDeadDataNodes not returning correct number of dead decommissioned nodes