Hadoop退出安全模式

启动hive时，在发现 HDFS已经处于安全模式【安全模式什么网上讲解很多】了，没有办法操作了！

 1 Logging initialized using configuration in jar:file:/apps/hive/lib/hive-common-1.2.1.jar!/hive-log4j.properties
 2 Exception in thread "main" java.lang.RuntimeException: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.server.namenode.SafeModeException): Cannot create directory /tmp/hive/root/a6844814-495e-45f6-a665-ff006311cdc1. Name node is in safe mode.
 3 The reported blocks 0 needs additional 22 blocks to reach the threshold 0.9990 of total blocks 22.
 4 The number of live datanodes 0 has reached the minimum number 0. Safe mode will be turned off automatically once the thresholds have been reached.
 5     at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkNameNodeSafeMode(FSNamesystem.java:1366)
 6     at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirsInt(FSNamesystem.java:4258)
 7     at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirs(FSNamesystem.java:4233)
 8     at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.mkdirs(NameNodeRpcServer.java:853)
 9     at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.mkdirs(ClientNamenodeProtocolServerSideTranslatorPB.java:600)
10     at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
11     at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:619)
12     at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:975)
13     at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2040)
14     at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2036)
15     at java.security.AccessController.doPrivileged(Native Method)
16     at javax.security.auth.Subject.doAs(Subject.java:415)
17     at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1656)
18     at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2034)
19
20     at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:522)
21     at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:677)
22     at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:621)
23     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
24     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
25     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
26     at java.lang.reflect.Method.invoke(Method.java:606)
27     at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
28     at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
29 Caused by: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.server.namenode.SafeModeException): Cannot create directory /tmp/hive/root/a6844814-495e-45f6-a665-ff006311cdc1. Name node is in safe mode.
30 The reported blocks 0 needs additional 22 blocks to reach the threshold 0.9990 of total blocks 22.
31 The number of live datanodes 0 has reached the minimum number 0. Safe mode will be turned off automatically once the thresholds have been reached.
32     at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkNameNodeSafeMode(FSNamesystem.java:1366)
33     at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirsInt(FSNamesystem.java:4258)
34     at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirs(FSNamesystem.java:4233)
35     at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.mkdirs(NameNodeRpcServer.java:853)
36     at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.mkdirs(ClientNamenodeProtocolServerSideTranslatorPB.java:600)
37     at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
38     at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:619)
39     at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:975)
40     at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2040)
41     at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2036)
42     at java.security.AccessController.doPrivileged(Native Method)
43     at javax.security.auth.Subject.doAs(Subject.java:415)
44     at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1656)
45     at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2034)
46
47     at org.apache.hadoop.ipc.Client.call(Client.java:1469)
48     at org.apache.hadoop.ipc.Client.call(Client.java:1400)
49     at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:232)
50     at com.sun.proxy.$Proxy19.mkdirs(Unknown Source)
51     at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.mkdirs(ClientNamenodeProtocolTranslatorPB.java:539)
52     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
53     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
54     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
55     at java.lang.reflect.Method.invoke(Method.java:606)
56     at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:187)
57     at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
58     at com.sun.proxy.$Proxy20.mkdirs(Unknown Source)
59     at org.apache.hadoop.hdfs.DFSClient.primitiveMkdir(DFSClient.java:2742)
60     at org.apache.hadoop.hdfs.DFSClient.mkdirs(DFSClient.java:2713)
61     at org.apache.hadoop.hdfs.DistributedFileSystem$17.doCall(DistributedFileSystem.java:870)
62     at org.apache.hadoop.hdfs.DistributedFileSystem$17.doCall(DistributedFileSystem.java:866)
63     at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
64     at org.apache.hadoop.hdfs.DistributedFileSystem.mkdirsInternal(DistributedFileSystem.java:866)
65     at org.apache.hadoop.hdfs.DistributedFileSystem.mkdirs(DistributedFileSystem.java:859)
66     at org.apache.hadoop.hive.ql.session.SessionState.createPath(SessionState.java:639)
67     at org.apache.hadoop.hive.ql.session.SessionState.createSessionDirs(SessionState.java:574)
68     at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:508)
69     ... 8 more

于是使用下面命令退出安全模式~

1 1 hadoop dfsadmin -safemode leave

但是又出现了这样的问题 让我如何是好~