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https://issues.apache.org/jira/browse/HBASE-25744?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nick Dimiduk updated HBASE-25744:
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Status: Patch Available (was: Open)
> 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
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