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From "Nikhil Mulley (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-9692) Report top 10 Namenode rpc consumers through JMX
Date Sat, 23 Jan 2016 21:32:39 GMT
Nikhil Mulley created HDFS-9692:

             Summary: Report top 10 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


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
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

thank you


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