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https://issues.apache.org/jira/browse/HDFS-9692?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Anu Engineer resolved HDFS-9692.
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    Resolution: Duplicate

> Report Top Namenode rpc consumers through JMX
> ---------------------------------------------
>
>                 Key: HDFS-9692
>                 URL: https://issues.apache.org/jira/browse/HDFS-9692
>             Project: Hadoop HDFS
>          Issue Type: Wish
>            Reporter: Nikhil Mulley
>
> 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



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