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Nick Dimiduk updated HBASE-25744: --------------------------------- Release Note: Before this change, by default, the normalizer would exclude any region with a total `storefileSizeMB` <= 1 from merge consideration. This changes the default so that these small regions will be merged away. > Change default of `hbase.normalizer.merge.min_region_size.mb` to `0` > -------------------------------------------------------------------- > > Key: HBASE-25744 > URL: https://issues.apache.org/jira/browse/HBASE-25744 > Project: HBase > Issue Type: Improvement > Components: master, Normalizer > Affects Versions: 3.0.0-alpha-1, 2.5.0 > Reporter: Nick Dimiduk > Assignee: Nick Dimiduk > Priority: Major > > The current default value is {{1}}, which means normalizer will leave regions > of 0-1mb size hanging around. We should set this down to {{0}} so that these > small regions go away by default. As I recall, the value was set as it is in > order to prevent the normalizer from merging up regions immediately after an > operator creates a pre-split table. IMHO, this use case is more than covered > by these other configurations with their default values: > * {{hbase.normalizer.min.region.count=3}} > * {{hbase.normalizer.merge.min_region_age.days=3}} > For details, see > * > http://hbase.apache.org/devapidocs/org/apache/hadoop/hbase/master/normalizer/package-summary.html#package.description > * > http://hbase.apache.org/devapidocs/org/apache/hadoop/hbase/master/normalizer/SimpleRegionNormalizer.html -- This message was sent by Atlassian Jira (v8.3.4#803005)