[HBASE-24416] RegionNormalizer spliting region should not be limited by hbase.normalizer.min.region.count

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha-1
• Fix Version/s: 3.0.0-alpha-1, 2.3.0, 2.2.6
• Component/s: Normalizer
• Assignee: Sun Xin
• Reporter: Sun Xin
• Due: 22/May/20
• Created: 22/May/20 04:03
• Updated: 07/Apr/21 20:22
• Resolved: 28/May/20 08:29

Description

In method computePlanForTable of SimpleRegionNormalizer: 

we will skip spliting region if the number of regions in the table is less than hbase.normalizer.min.region.count, even if there is a huge region in the table.

...
if (tableRegions == null || tableRegions.size() < minRegionCount) {
  ...
  return null;
}

...
// get region split plan
if (splitEnabled) {
  List<NormalizationPlan> splitPlans = getSplitNormalizationPlan(table);
  if (splitPlans != null) {
    plans.addAll(splitPlans);
  }
}

 

Issue Links

• relates to: HBASE-25745 Deprecate/Rename config `hbase.normalizer.min.region.count` to `hbase.normalizer.merge.min.region.count`
• links to: GitHub Pull Request #1770
• links to: GitHub Pull Request #1788