private static RegionNormalizer getRegionNormalizer(Configuration conf) {
    // Create instance of Region Normalizer
    Class<? extends RegionNormalizer> balancerKlass =
      conf.getClass(HConstants.HBASE_MASTER_NORMALIZER_CLASS, SimpleRegionNormalizer.class,
        RegionNormalizer.class);
    return ReflectionUtils.newInstance(balancerKlass, conf);
  }
Create a region normalizer from the given conf.
@param conf configuration
@return {@link RegionNormalizer} implementation
hbase-server/src/main/java/org/apache/hadoop/hbase/master/normalizer/RegionNormalizerFactory.java