| Package | Description | 
|---|---|
| org.apache.hadoop.hbase.master | |
| org.apache.hadoop.hbase.master.normalizer | The Region Normalizer subsystem is responsible for coaxing all the regions in a table toward
 a "normal" size, according to their storefile size. | 
| Class and Description | 
|---|
| RegionNormalizerManager This class encapsulates the details of the  RegionNormalizersubsystem. | 
| Class and Description | 
|---|
| MergeNormalizationPlan Normalization plan to merge adjacent regions. | 
| MergeNormalizationPlan.Builder A helper for constructing instances of  MergeNormalizationPlan. | 
| NormalizationPlan A  NormalizationPlandescribes some modification to region split points as identified
 by an instance ofRegionNormalizer. | 
| NormalizationPlan.PlanType | 
| NormalizationTarget A POJO that caries details about a region selected for normalization through the pipeline. | 
| RegionNormalizer Performs "normalization" of regions of a table, making sure that suboptimal
 choice of split keys doesn't leave cluster in a situation when some regions are
 substantially larger than others for considerable amount of time. | 
| RegionNormalizerChore Chore that will periodically call
  HMaster.normalizeRegions(NormalizeTableFilterParams, boolean). | 
| RegionNormalizerManager This class encapsulates the details of the  RegionNormalizersubsystem. | 
| RegionNormalizerWorker Consumes normalization request targets ( TableNames) off theRegionNormalizerWorkQueue, dispatches them to theRegionNormalizer,
 and executes the resultingNormalizationPlans. | 
| RegionNormalizerWorkQueue A specialized collection that holds pending work for the  RegionNormalizerWorker. | 
| SimpleRegionNormalizer.NormalizeContext Inner class caries the state necessary to perform a single invocation of
  SimpleRegionNormalizer.computePlansForTable(TableName). | 
| SimpleRegionNormalizer.NormalizerConfiguration Holds the configuration values read from  Configuration. | 
| SplitNormalizationPlan Normalization plan to split a region. | 
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