Hot Region Diagnosis
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Key: HBASE-4038
URL: https://issues.apache.org/jira/browse/HBASE-4038
Project: HBase
Issue Type: Improvement
Components: client, regionserver
Affects Versions: 0.92.0
Reporter: Nicolas Spiegelberg
Assignee: Nicolas Spiegelberg
Priority: Minor
We should provide a basic way for end users to operationally diagnose hot row
problems. Thinking about a 2-phase approach:
1. Diagnose hot regions
2. Inspect those regions/servers to find the hot rows.
To diagnose hot regions, we could query the master or regionservers for these
regions + sort. To inspect the regions for hot rows, we could write another
script to analyze the HLogs on a server and basically do: sort log|uniq -n|sort
-n|top
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