问题如下：
- ERROR: org.apache.hadoop.hbase.PleaseHoldException: Master is initializing
ERROR: org.apache.hadoop.hbase.PleaseHoldException: Master is initializing
at org.apache.hadoop.hbase.master.HMaster.checkInitialized(HMaster.java:2452)
at org.apache.hadoop.hbase.master.HMaster.checkNamespaceManagerReady(HMaster.java:2457)
at org.apache.hadoop.hbase.master.HMaster.createNamespace(HMaster.java:2630)
at org.apache.hadoop.hbase.master.MasterRpcServices.createNamespace(MasterRpcServices.java:453)
at org.apache.hadoop.hbase.protobuf.generated.MasterProtos$MasterService$2.callBlockingMethod(MasterProtos.java:58599)
at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2339)
at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:123)
at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:188)
at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:168)
解决办法：
- (清除hbase原有的所有数据)
1、hadoop的bin目录下，执行命令以下命令清除Hbase数据
hadoop fs -rm -r /hbase
2、连接ZK，执行以下命令清除Hbase数据
[link999@hadoop102 zookeeper]$ bin/zkCli.sh -server 127.0.0.1:2181
rmr /hbase
3、重启ZK、重启hadoop（hdfs、yarn）、重启hbase
之后可以正常使用
参考文章：http://www.manongjc.com/detail/40-wusaeobbqibrftb.html
