安装了HADOOP HBASE，运行起来了，虽然功能没有任何问题，但是，在日志文件里会出现这样的错误
java.io.IOException: Read error rc = -1 java.nio.DirectByteBuffer[pos=0 lim=4 cap=4]
at org.apache.zookeeper.ClientCnxn$SendThread.doIO(ClientCnxn.java:701)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:945)
2011-02-09 10:06:49,197 WARN org.apache.zookeeper.ClientCnxn: Ignoring exception during shutdown input
java.net.SocketException: Transport endpoint is not connected
at sun.nio.ch.SocketChannelImpl.shutdown(Native Method)
at sun.nio.ch.SocketChannelImpl.shutdownInput(SocketChannelImpl.java:640)
at sun.nio.ch.SocketAdaptor.shutdownInput(SocketAdaptor.java:360)
at org.apache.zookeeper.ClientCnxn$SendThread.cleanup(ClientCnxn.java:999)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:970)
2011-02-09 10:06:49,197 WARN org.apache.zookeeper.ClientCnxn: Ignoring exception during shutdown output
java.net.SocketException: Transport endpoint is not connected
at sun.nio.ch.SocketChannelImpl.shutdown(Native Method)
at sun.nio.ch.SocketChannelImpl.shutdownOutput(SocketChannelImpl.java:651)
at sun.nio.ch.SocketAdaptor.shutdownOutput(SocketAdaptor.java:368)
at org.apache.zookeeper.ClientCnxn$SendThread.cleanup(ClientCnxn.java:1004)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:970)
2011-02-09 10:06:49,315 WARN org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper: Failed to set watcher on ZNode /hbase/master
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase/master
at org.apache.zookeeper.KeeperException.create(KeeperException.java:90)
at org.apache.zookeeper.KeeperException.create(KeeperException.java:42)
at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:780)
at org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper.watchMasterAddress(ZooKeeperWrapper.java:366)
at org.apache.hadoop.hbase.regionserver.HRegionServer.watchMasterAddress(HRegionServer.java:392)
at org.apache.hadoop.hbase.regionserver.HRegionServer.reinitializeZooKeeper(HRegionServer.java:322)
at org.apache.hadoop.hbase.regionserver.HRegionServer.reinitialize(HRegionServer.java:313)
at org.apache.hadoop.hbase.regionserver.HRegionServer.<init>(HRegionServer.java:283)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at org.apache.hadoop.hbase.regionserver.HRegionServer.doMain(HRegionServer.java:2434)
at org.apache.hadoop.hbase.regionserver.HRegionServer.main(HRegionServer.java:2502)
按我的理解就是远程端点连接的问题，而且，不管是哪台机子都有这个错误，试着将防火墙关闭了，但是仍然没有用。现在正在调试，希望今天可以找出这个问题的原因吧。
现在可以使用，SHELL命令也没问题，就是不知道这个东西会不会造成数据丢失。如果有朋友也遇到过，可以一起来讨论一下