@Override // simply use the default Object#hashcode() ?
  public int hashCode() {
    return hashCode(ticket, serviceName, address);
  }
This class holds the address and the user ticket, etc. The client connections to servers are
uniquely identified by &lt;remoteAddress, ticket, serviceName&gt;
hbase-client/src/main/java/org/apache/hadoop/hbase/ipc/ConnectionId.java