转载自:http://www.waitig.com/hadoop-name-node-is-in-safe-mode.html 在使用Hadoop建立文件的时候,出现“Cannot create directory /user/hadoop/input. Name node is in safe mode.”问题的原因及解决方案 问题描述 将本地文件复制到hdfs上去或者在hafs上新建文件时会出现“Cannot … directory … Name node is in safe mode”的…

在执行mdrill创建表的时候报如下异常(蓝色部分为关键): [mdrill@hadoop1101 bin]$ ./bluewhale mdrill create ./create.sql higo execute [create, ./create.sql] Exception in thread "main" org.apache.hadoop.ipc.RemoteException: org.apache.hadoop.hdfs.server.namenode.SafeModeE…

FAILED: Error in metadata: MetaException(message:Got exception: org.apache.hadoop.ipc.RemoteException org.apache.hadoop.hdfs.server.namenode.SafeModeException: Cannot create directory /user/hive/warehouse/page_view. Name node is in safe mode. 在安装hive…

今天在hdfs上面创建文件夹的时候报了:org.apache.hadoop.dfs.SafeModeException: Cannot delete /user/hadoop/input. Name node is in safe mode 据资料是说hdfs刚刚启动,还在验证和适配,所以进入安全模式,等一会儿就好了,然后我等了几分钟并没有好..(惊了) 然后找到了解决安全模式的办法: 用户可以通过dfsadmin -safemode value   来操作安全模式,参数value的说明如下:…

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…

1.hadoop3: mkdir: cannot create directory `/usr/local/hadoop/bin/../logs': Permission denied把所有Datanode节点执行下面命令[hadoop@hadoop3 local]$ chown -R  hadoop:hadoop  hadoop-0.20.2/…

运行hadoop程序时,有时候会报以下错误:org.apache.hadoop.dfs.SafeModeException: Cannot delete /user/hadoop/input. Name node is in safe mode 这个错误应该还满常见的吧(至少我运行的时候是这样的) 那我们来分析下这个错误,从字面上来理解: Name node is in safe mode 说明Hadoop的NameNode处在安全模式下. 那什么是Hadoop的安全模式呢? 在分布式文件系统启…

Gradle Goodness: Task Output Annotations Create Directory Automatically One of the great features of Gradle is incremental build support. With incremental build support a task is only executed if it is really necessary. For example if a task generate…

启动hadoop时,报错“mkdir: cannot create directory ‘/soft/hadoop-2.7.3/logs’: Permission denied” 注:/soft/hadoop-2.7.3为hadoop的安装目录,具体目录因人而异 原因:/soft目录的用户权限为root,需要修改为centos用户权限 注:centos为本机的用户名,具体用户名因人而异 解决办法: 1.切换到root用户 su root 2.递归修改/soft目录的用户权限 chown -R c…

以下是我的程序(取自headfirst Java): import javax.sound.midi.*; public class MiniMiniMusicApp { public static void main(String[] args) { MiniMiniMusicApp mini = new MiniMiniMusicApp(); mini.play(); } public void play() { try { Sequencer player = MidiSystem.get…