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https://issues.apache.org/jira/browse/HDFS-11063?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17916273#comment-17916273
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Chris Nauroth commented on HDFS-11063:
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I'm so sorry to be super-late (years) responding to this, but I would still be
in favor of attaching more contextual information to the NameNode RPC handler
thread names. If anyone wants to pick it up, I'd be happy to code review and
shepherd to a commit.
> Set NameNode RPC server handler thread name with more descriptive information
> about the RPC call.
> -------------------------------------------------------------------------------------------------
>
> Key: HDFS-11063
> URL: https://issues.apache.org/jira/browse/HDFS-11063
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Reporter: Chris Nauroth
> Priority: Major
>
> We often run {{jstack}} on a NameNode process as a troubleshooting step if it
> is suffering high load or appears to be hanging. By reading the stack trace,
> we can identify if a caller is blocked inside an expensive operation. This
> would be even more helpful if we updated the RPC server handler thread name
> with more descriptive information about the RPC call. This could include the
> calling user, the called RPC method, and the most significant argument to
> that method (most likely the path).
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