[HDFS-2203] Add additional fields to the JMX output on NameNode

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Won't Fix
• Affects Version/s: 0.20.204.0, 0.20.205.0, 0.23.0
• Component/s: namenode
• Labels: BB2015-05-RFC newbie

Release Note

Adding the following attributes for each live data node:
capacity
nonDFSUsed
remaining
usedPercent
remainingPercent
blocks
blockPoolUsed
blockPoolUsedPercent
failedVolumes
along with the three already exposed attributes:
usedSpace, lastContact and adminState

• Assignee: Tanping Wang
• Reporter: Charles Wimmer
• Created: 26/Jul/11 18:32
• Updated: 09/May/15 06:14
• Resolved: 09/May/15 06:01

Description

When accessing the JMX data via http (http://namenode:50070/jmx) there are a couple of useful fields missing from this bean:

"name" : "Hadoop:service=NameNode,name=NameNodeInfo",
"modelerType" : "org.apache.hadoop.hdfs.server.namenode.FSNamesystem",

Please add the number of blocks and the configured capacity.