@Override
  public long removeReplicationPeer(String peerId) throws ReplicationException, IOException {
    LOG.info(getClientIdAuditPrefix() + " removing replication peer, id=" + peerId);
    return executePeerProcedure(new RemovePeerProcedure(peerId));
  }
Fetch the configured {@link LoadBalancer} class name. If none is set, a default is returned.
<p/>
Notice that, the base load balancer will always be {@link RSGroupBasedLoadBalancer} now, so
this method will return the balancer used inside each rs group.
@return The name of the {@link LoadBalancer} in use.
hbase-server/src/main/java/org/apache/hadoop/hbase/master/HMaster.java