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From "Jean-Marc Spaggiari (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11062) htop
Date Thu, 24 Apr 2014 00:32:15 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11062?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13979134#comment-13979134
] 

Jean-Marc Spaggiari commented on HBASE-11062:
---------------------------------------------

HTop make me think about htop ;)

http://hisham.hm/htop/htop-1.0.2-io.png
https://packages.debian.org/search?keywords=htop

But I agree that it might be nice to have! Like a status page with all those metrics... Cassandra
has nice metrics reports already.

> 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
org.apache.hadoop.hbase.HTop
> 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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