public void setMetaReplicaCount(int replicaCount) {
    if (replicaCount != metaReplicaCount) {
      metaReplicaCount = replicaCount;
      refreshWatchingList();
    }
  }
Tracks the meta region locations on server ZK cluster and synchronize them to client ZK cluster
if changed
hbase-server/src/main/java/org/apache/hadoop/hbase/master/zksyncer/MetaLocationSyncer.java