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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11062) htop
Date Thu, 24 Apr 2014 04:49:16 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11062?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13979279#comment-13979279

Andrew Purtell commented on HBASE-11062:

As long as we can get a cluster "top" view that lets you drill down into per server "top"
views. I might tunnel a web interface for that. If the interface can render JSON instead of
HTML then additional things like a terminal app can still happen later. 

> htop
> ----
>                 Key: HBASE-11062
>                 URL: https://issues.apache.org/jira/browse/HBASE-11062
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Andrew Purtell
> A top-like monitor could be useful for testing, debugging, operations of clusters of
moderate size, and possibly for diagnosing issues in large clusters.
> Consider a curses interface like the one presented by atop (http://www.atoptool.nl/images/screenshots/genericw.png)
- with aggregate metrics collected over a monitoring interval in the upper portion of the
pane, and a listing of discrete measurements sorted and filtered by various criteria in the
bottom part of the pane. One might imagine a cluster overview with cluster aggregate metrics
above and a list of regionservers sorted by utilization below; and a regionserver view with
process metrics above and a list of metrics by operation type below, or a list of client connections,
or a list of threads, sorted by utilization, throughput, or latency. 
> Generically 'htop' is taken but would be distinctive in the HBase context, a utility
> No need necessarily for a curses interface. Could be an external monitor with a web front
end as has been discussed before. I do like the idea of a process that runs in a terminal
because I interact with dev and test HBase clusters exclusively by SSH. 

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