Hari Sekhon created HBASE-20946:
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Summary: HMaster UI warn if Major Compaction hasn't occurred +
completed successfully within hbase.hregion.majorcompaction time
Key: HBASE-20946
URL: https://issues.apache.org/jira/browse/HBASE-20946
Project: HBase
Issue Type: Improvement
Affects Versions: 1.1.2, 3.0.0, 2.2.0
Reporter: Hari Sekhon
HMaster UI should warn if Major Compaction hasn't occurred and completed
successfully within hbase.hregion.majorcompaction time (default 7 days).
Recent changes in HBase HBASE-6028 mean major compactions could be cancelled
and result in read amplification over time. HMaster UI should monitor time
since last major compaction completed successfully isn't greater than
hbase.hregion.majorcompaction (plus some fudge factor).
If hbase.hregion.majorcompaction is zero then disable the check, as external
tooling will trigger major compactions off peak and should instead monitor
against JMX timestamp of last major compaction as per HBASE-20945.
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