Nick Dimiduk created HBASE-25744:
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Summary: 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
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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