Lars Hofhansl created HBASE-11767:
-------------------------------------
Summary: [0.94] Unnecessary garbage produced by schema metrics
during scanning
Key: HBASE-11767
URL: https://issues.apache.org/jira/browse/HBASE-11767
Project: HBase
Issue Type: Bug
Reporter: Lars Hofhansl
Assignee: Lars Hofhansl
Fix For: 0.94.23
Near the end of StoreScanner.next(...) we find this gem:
{code}
} finally {
if (cumulativeMetric > 0 && metric != null) {
RegionMetricsStorage.incrNumericMetric(this.metricNamePrefix + metric,
cumulativeMetric);
}
}
{code}
So, for each row generated we build up a new metric string, that will be
identical for each invocation of the StoreScanner anyway (a store scanner is
valid for at most one region and one operation).
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