Connection refused Will not attempt to authenticate using SASL

#描述：
启动 start-hbase.sh     或者   JAVA 代码连接hbase时会出现 SASL 问题


# 错误信息：


WARN org.apache.zookeeper.ClientCnxn: Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:599)
at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
 WARN org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: Possibly transient ZooKeeper exception: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase/master
2013-11-12 23:28:31,676 INFO org.apache.hadoop.hbase.util.RetryCounter: Sleeping 8000ms before retry #3...
2013-11-12 23:28:31,676 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server slave002/172.25.60.202:2181. Will not attempt to authenticate using SASL (无法定位登录配置)

#可能原因：

1. hbase的用的ip地址，而zookeeper（含内置的）解析后只返回 域名 ，缺乏一个DNS机制

    详见 http://www.iteye.com/topic/1132950

2. hbase的data文件的地址写错

#可能的改正，已验证：

1. 注意 分隔符  ///
hbase-site.xml 中的  hbase.rootdir  配置 ：
   
    hbase.rootdir    
    file: ///D:/data/HbaseData    
   

2.  域名修改

发送请求端的 hosts文件，接受请求端的hosts文件 ， hbase里的hbase.zookeeper.quorum 的值必须完全一致