Hbase 启动报错 class org.apache.hadoop.hbase.master.HMaster

ERROR [main] zookeeper.RecoverableZooKeeper: ZooKeeper create failed after 4 attempts ERROR [main] master.HMasterCommandLine: Master exiting java.lang.RuntimeException: Failed construction of Master: class org.apache.hadoop.hbase.master.HMaster         at org.apache.hadoop.hbase.master.HMaster.constructMaster(HMaster.java:2785)         at org.apache.hadoop.hbase.master.HMasterCommandLine.startMaster(HMasterCommandLine.java:184)        at org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:134)        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)         at org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:126)         at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:2799) Caused by: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase         at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)         at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)         at org.apache.zookeeper.ZooKeeper.create(ZooKeeper.java:783)         at org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.createNonSequential(RecoverableZooKeeper.java:489)        at org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.create(RecoverableZooKeeper.java:468)        at org.apache.hadoop.hbase.zookeeper.ZKUtil.createWithParents(ZKUtil.java:1235)         at org.apache.hadoop.hbase.zookeeper.ZKUtil.createWithParents(ZKUtil.java:1213)         at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.createBaseZNodes(ZooKeeperWatcher.java:174)        at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.<init>(ZooKeeperWatcher.java:167)         at org.apache.hadoop.hbase.master.HMaster.<init>(HMaster.java:473)         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)         at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)        at java.lang.reflect.Constructor.newInstance(Constructor.java:526)         at org.apache.hadoop.hbase.master.HMaster.constructMaster(HMaster.java:2780)         ... 5 more 系统是centos6.5  Hbase 0.96.2 hadoop 2.2 zookeeper 3.4.6 全部是集群安装，hadoop和zookeeper都能正确启动，就Hbase启动报上述错误，纠结了几天了，也没找出原因！