mkdir: Cannot create directory /file. Name node is in safe mode.

本文介绍在Hadoop的Namenode处于安全模式时,尝试创建目录导致失败的问题及解决方法。通过使用hadoop dfsadmin命令退出安全模式,成功创建了目录。

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刚刚在hadoop想创建一个目录的时候,发现报错了

具体信息如下:

[hadoop@mini1 hadoop-2.6.4]$ hadoop fs -mkdir /file
mkdir: Cannot create directory /file. Name node is in safe mode.

从错误信息可以看到hadoop当前的namenode是处于安全模式。

解决:

[hadoop@mini1 hadoop-2.6.4]$ hadoop  dfsadmin -safemode leave
DEPRECATED: Use of this script to execute hdfs command is deprecated.
Instead use the hdfs command for it.

Safe mode is OFF

再次执行创建目录的的命令,成功

转载于:https://www.cnblogs.com/chunguang-yao/p/10666397.html

Logging initialized using configuration in jar:file:/opt/programs/apache-hive-1.2.2-bin/lib/hive-common-1.2.2.jar!/hive-log4j.properties Exception in thread "main" java.lang.RuntimeException: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.server.namenode.SafeModeException): Cannot create directory /tmp/hive. Name node is in safe mode. The reported blocks 5 has reached the threshold 0.9990 of total blocks 5. The number of live datanodes 1 has reached the minimum number 0. In safe mode extension. Safe mode will be turned off automatically in 7 seconds. at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkNameNodeSafeMode(FSNamesystem.java:1335) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirs(FSNamesystem.java:3871) at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.mkdirs(NameNodeRpcServer.java:984) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.mkdirs(ClientNamenodeProtocolServerSideTranslatorPB.java:634) at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:616) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:982) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2217) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2213) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1758) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2213) at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:522) at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:677) at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:621) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflec
最新发布
06-21
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