@Override
  public long getSplitPlanCount() {
    if (master.getRegionNormalizerManager() == null) {
      return 0;
    }
    return master.getRegionNormalizerManager().getSplitPlanCount();
  }
Impl for exposing HMaster Information through JMX
hbase-server/src/main/java/org/apache/hadoop/hbase/master/MetricsMasterWrapperImpl.java