Name node is in safe mode.

关闭safemode

hadoop dfsadmin -safemode leave

 

Exception in thread "main" org.apache.hadoop.ipc.RemoteException: org.apache.hadoop.hdfs.server.namenode.SafeModeException: Cannot create file/wangxin_test/build.xml. Name node is in safe mode.
The ratio of reported blocks 1.0000 has reached the threshold 0.9990. Safe mode will be turned off automatically in 22 seconds.
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startFileInternal(FSNamesystem.java:1220)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startFile(FSNamesystem.java:1188)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.create(NameNode.java:628)
    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$Server.call(RPC.java:563)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1388)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1384)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:396)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
    at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1382)

    at org.apache.hadoop.ipc.Client.call(Client.java:1070)
    at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:225)
    at $Proxy1.create(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:82)
    at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
    at $Proxy1.create(Unknown Source)
    at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.<init>(DFSClient.java:3248)
    at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:713)
    at org.apache.hadoop.hdfs.DistributedFileSystem.create(DistributedFileSystem.java:182)
    at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:555)
    at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:536)
    at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:443)
    at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:229)
    at org.apache.hadoop.fs.FileSystem.copyFromLocalFile(FileSystem.java:1195)
    at org.apache.hadoop.fs.FileSystem.copyFromLocalFile(FileSystem.java:1171)
    at org.apache.hadoop.fs.FileSystem.copyFromLocalFile(FileSystem.java:1143)
    at com.Hadoop.HdfsUtil.uploadLocalFile2HDFS(HdfsUtil.java:53)
    at com.Hadoop.HdfsUtil.main(HdfsUtil.java:18)

 

关闭safemode

hadoop dfsadmin -safemode leave