Jianwei Cui created HBASE-14936:
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Summary: CombinedBlockCache should overwrite
CacheStats#rollMetricsPeriod()
Key: HBASE-14936
URL: https://issues.apache.org/jira/browse/HBASE-14936
Project: HBase
Issue Type: Bug
Components: BlockCache
Affects Versions: 1.1.2
Reporter: Jianwei Cui
It seems CombinedBlockCache should overwrite CacheStats#rollMetricsPeriod() as
{code}
public void rollMetricsPeriod() {
lruCacheStats.rollMetricsPeriod();
bucketCacheStats.rollMetricsPeriod();
}
{code}
otherwise, CombinedBlockCache.getHitRatioPastNPeriods() and
CombinedBlockCache.getHitCachingRatioPastNPeriods() will always return 0.
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