public ModifyableTableDescriptor setNormalizerTargetRegionSize(final long regionSize) {
      return setValue(NORMALIZER_TARGET_REGION_SIZE_MB_KEY, Long.toString(regionSize));
    }
Setting the target region size of table normalization.
@param regionSize the target region size.
@return the modifyable TD
hbase-client/src/main/java/org/apache/hadoop/hbase/client/TableDescriptorBuilder.java