public long getMergeMinRegionSizeMb(NormalizeContext context) {
      final long mergeMinRegionSizeMb =
        context.getOrDefault(MERGE_MIN_REGION_SIZE_MB_KEY, Long::parseLong, (long) -1);
      if (mergeMinRegionSizeMb < 0) {
        return getMergeMinRegionSizeMb();
      }
      return mergeMinRegionSizeMb;
    }
Holds the configuration values read from {@link Configuration}. Encapsulation in a POJO enables
atomic hot-reloading of configs without locks.
hbase-server/src/main/java/org/apache/hadoop/hbase/master/normalizer/SimpleRegionNormalizer.java