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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2244) JMX values for RPC Activity is always zero
Date Wed, 10 Aug 2011 23:24:29 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2244?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13082754#comment-13082754
] 

Suresh Srinivas commented on HDFS-2244:
---------------------------------------

Allen, datanode RPC protocols InterDatanodeProtocol and ClientDatanodeProtocol are used rarely.
The datanodes for the cluster you have posted may not have seen any activity over Datanode
RPC. Could that be the case here?

> JMX values for RPC Activity is always zero
> ------------------------------------------
>
>                 Key: HDFS-2244
>                 URL: https://issues.apache.org/jira/browse/HDFS-2244
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 0.20.204.0
>            Reporter: Allen Wittenauer
>            Priority: Blocker
>         Attachments: screenshot-1.jpg
>
>
> jconsole is showing that the RPC metrics gathered for the datanode is always zero.  Other
metrics for the DN appears fine.

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