使用HBase shell命令时出现Zookeeper异常KeeperErroCode=ConnectionLoss for /hbase/hbaseid

[wutongzhihua]

HBase启动正常，但在使用HBase shell命令时，出现了如下的异常。没有搞明白，求指教。
2016-07-05 12:15:33,699 WARN [main] zookeeper.ZKUtil: hconnection-0x13aca850x0, quorum=hadoop0:2181,hadoop1:2181,hadoop2:2181, baseZNode=/hbase Unable to set watcher on znode (/hbase/hbaseid)
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase/hbaseid
at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1045)
at org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:221)
at org.apache.hadoop.hbase.zookeeper.ZKUtil.checkExists(ZKUtil.java:541)
at org.apache.hadoop.hbase.zookeeper.ZKClusterId.readClusterIdZNode(ZKClusterId.java:65)
at org.apache.hadoop.hbase.client.ZooKeeperRegistry.getClusterId(ZooKeeperRegistry.java:105)
at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.retrieveClusterId(ConnectionManager.java:880)
at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.<init>(ConnectionManager.java:636)

[LinkSe7en]

echo ruok | nc [zkNode] 2181 看看是不是返回imok。 提示的是无法连上znode