Xiao Liu created HBASE-30343:
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Summary: Per-table avgStoreFileAge overwrites instead of
accumulating store ages
Key: HBASE-30343
URL: https://issues.apache.org/jira/browse/HBASE-30343
Project: HBase
Issue Type: Bug
Reporter: Xiao Liu
Assignee: Xiao Liu
Fix For: 4.0.0-alpha-1, 2.7.0, 3.1.0, 3.0.1, 2.6.8, 2.5.17
In MetricsTableWrapperAggregateImpl.run(), the per-store loop assigns
totalStoreFileAge with '=' instead of '+=', while its divisor storeFileCount
accumulates with '+='. So getAvgStoreFileAge() (= totalStoreFileAge /
storeFileCount) only reflects the last store, under-reporting the metric for
any table with more than one store/region.
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