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.
UPDATE:
The tool name is changed from htop to hbtop.
- depends upon
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HBASE-15519 Add per-user metrics
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- Reopened
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- is related to
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- Resolved
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HBASE-12911 Client-side metrics
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- Resolved
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- links to
1.
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Meta query statistics metrics source |
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Resolved | Xu Cang |
2.
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Add documentation for hbtop |
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Open | Toshihiro Suzuki |
3.
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Backport HBASE-11062 "hbtop" to branch-1 |
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In Progress | Andrew Purtell |
4.
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Blog post for hbtop on hbase.apache.org |
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Resolved | Toshihiro Suzuki |