在create table的时候出现如下问题

1. ERROR: java.io.IOException: Table Namespace Manager not ready yet, try again later

解决方案：这个问题是从单机配置到多机配置的时候出的问题，修改conf/hbase-env.sh 注释掉export HBASE_MANAGES_ZK=true 

2. java.net.SocketTimeoutException: Call to datanode1/172.16.0.122:60020 failed because java.net.SocketTimeoutException: 60000 millis timeout while waiting for channel to be ready for read. ch : java.nio.channels.SocketChannel[connected local=/172.16.0.126:55277 remote=datanode1/172.16.0.122:60020]

问题: 主服务器和从服务器上hbase-site.xml中，zookeeper.session.timeout配置的时间不一致

解决方案：把主服务器和从服务器上hbase-site.xml中的zookeeper.session.timeout配置一致，统一成120000

3. RegionServer not running

察看日志：2014-06-05 22:02:20,112 INFO  [master:localhost:60000] master.ServerManager: Waiting on regionserver(s) to go down localhost,60020,1401974130087
2014-06-05 22:02:21,113 INFO  [master:localhost:60000] master.ServerManager: Waiting on regionserver(s) to go down localhost,60020,1401974130087
2014-06-05 22:02:22,114 INFO  [master:localhost:60000] master.ServerManager: Waiting on regionserver(s) to go down localhost,60020,1401974130087
2014-06-05 22:02:23,115 INFO  [master:localhost:60000] master.ServerManager: Waiting on regionserver(s) to go down localhost,60020,1401974130087
2014-06-05 22:02:24,118 INFO  [master:localhost:60000] master.ServerManager: Waiting on regionserver(s) to go down localhost,60020,1401974130087
2014-06-05 22:02:25,119 INFO  [master:localhost:60000] master.ServerManager: Waiting on regionserver(s) to go down localhost,60020,1401974130087
2014-06-05 22:02:26,121 INFO  [master:localhost:60000] master.ServerManager: Waiting on regionserver(s) to go down localhost,60020,1401974130087
2014-06-05 22:02:27,122 INFO  [master:localhost:60000] master.ServerManager: Waiting on regionserver(s) to go down localhost,60020,1401974130087
2014-06-05 22:02:28,123 INFO  [master:localhost:60000] master.ServerManager: Waiting on regionserver(s) to go down localhost,60020,1401974130087
2014-06-05 22:02:29,124 INFO  [master:localhost:60000] master.ServerManager: Waiting on regionserver(s) to go down localhost,60020,1401974130087
2014-06-05 22:02:30,126 INFO  [master:localhost:60000] master.ServerManager: Waiting on regionserver(s) to go down localhost,60020,1401974130087
2014-06-05 22:02:31,127 INFO  [master:localhost:60000] master.ServerManager: Waiting on regionserver(s) to go down localhost,60020,1401974130087
2014-06-05 22:02:32,129 INFO  [master:localhost:60000] master.ServerManager: Waiting on regionserver(s) to go down localhost,60020,1401974130087
2014-06-05 22:02:33,130 INFO  [master:localhost:60000] master.ServerManager: Waiting on regionserver(s) to go down localhost,60020,1401974130087
2014-06-05 22:02:33,667 INFO  [master:localhost:60000.oldLogCleaner] cleaner.LogCleaner: master:localhost:60000.oldLogCleaner exiting
2014-06-05 22:02:33,668 INFO  [master:localhost:60000.oldLogCleaner] master.ReplicationLogCleaner: Stopping replicationLogCleaner-0x466c2b7c4b0003, quorum=datanode1:2222,robinson-ubuntu:2222, baseZNode=/hbase
2014-06-05 22:02:33,684 INFO  [master:localhost:60000.archivedHFileCleaner] cleaner.HFileCleaner: master:localhost:60000.archivedHFileCleaner exiting
2014-06-05 22:02:33,691 INFO  [master:localhost:60000.oldLogCleaner] zookeeper.ZooKeeper: Session: 0x466c2b7c4b0003 closed

问题:/etc/hosts 中把主机名配置成了127.0.0.1

解决方案：把主机名配置成实际IP地址