@Override
  public void removePeer(String peerId) throws ReplicationException {
    try {
      ZKUtil.deleteNodeRecursively(zookeeper, getPeerNode(peerId));
    } catch (KeeperException e) {
      throw new ReplicationException("Could not remove peer with id=" + peerId, e);
    }
  }
The name of the znode that contains a list of all remote slave (i.e. peer) clusters.
hbase-replication/src/main/java/org/apache/hadoop/hbase/replication/ZKReplicationPeerStorage.java