[jira] [Created] (HBASE-11062) htop

["Andrew Purtell (JIRA)" <ji...@apache.org>]

Andrew Purtell created HBASE-11062:
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             Summary: 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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