错误信息：

14/04/17 20:53:09 ERROR hdfs.DFSClient: Failed to close file /datas/_temporary/_attempt_local_0001_r_000000_0/part-r-00000

org.apache.hadoop.ipc.RemoteException: java.io.IOException: File /datas/_temporary/_attempt_local_0001_r_000000_0/part-r-00000 could only be replicated to 0 nodes, instead of 1

at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1639)

at org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:736)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:578)

at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1393)

at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1389)

at java.security.AccessController.doPrivileged(Native Method)

at javax.security.auth.Subject.doAs(Subject.java:396)

at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1149)

at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1387)

at org.apache.hadoop.ipc.Client.call(Client.java:1107)

at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:229)

at $Proxy1.addBlock(Unknown Source)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:85)

at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:62)

at $Proxy1.addBlock(Unknown Source)

at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.locateFollowingBlock(DFSClient.java:3686)

at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:3546)

at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2600(DFSClient.java:2749)

at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2989)

解决方案：

            解决办法是删除掉data.dir目录，我查了一下，删除的是如下这个目录：

            /tmp/hadoop-root/dfs/data 

                                                                                                                                Name：Xr

                                                                                                                                Date：2014-05-31 23:18

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