[HDFS-9692] Report Top Namenode rpc consumers through JMX

• Type: Wish
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Assignee: Unassigned
• Reporter: Nikhil Mulley
• Created: 23/Jan/16 21:31
• Updated: 26/Jan/16 23:57
• Resolved: 26/Jan/16 23:57

Description

Hi,

I think it would really help if namenode(s) through metrics/jmx report the top rpc consumers, so it will be really handy to look at the rogue clients in times of despair/troubleshooting times.
At times of rpc spikes on namenode, and callqueuelength increasing, it becomes tedious to figure out the offenders when there is a huge cluster (>1k nodes).
Having rpc client information(src_host:src_port) in the top consumers list would help operators. Let me know if any other information is needed to make this feature added to namenode metrics system.

thank you

Nikhil

Issue Links

• duplicates: HDFS-6982 nntop: top­-like tool for name node users