public synchronized void joinCluster(ZuCluster cluster, Set<Integer> shards)
throws JoinException, InterruptedException {
String clusterId = cluster.getClusterId();
List<EndpointStatus> endpoints = endpointMap.get(clusterId);
if (endpoints == null) {
endpoints = cluster.join(addr, shards);
endpointMap.put(clusterId, endpoints);
} else {
throw new JoinException("cluster " + clusterId + " already joined, leave first", null);
}
}
