转载请注明出处:http://www.cnblogs.com/wubdut/p/4681286.html platform: Ubuntu 14.04 LTS hadoop 1.2.1 1. install ssh: $sudo apt-get install openssh-server $sudo apt-get install openssh-client 2. ssh no password access: $ssh wubin (your computer) $ssh-keygen $…

Purpose(目标) This document describes how to set up and configure a single-node Hadoop installation so that you can quickly perform simple operations using Hadoop MapReduce and the Hadoop Distributed File System (HDFS). 这个文档描述了如何安装和配置一个单节点的Hadoop安装,这样很…

一.环境准备 1.系统环境 CentOS 7 2.软件环境 OpenJDK # 查询可安装的OpenJDK软件包[root@server1] yum search java | grep jdk...# 选择1.8.0版本安装,包括运行环境(openjdk)和开发环境(openjdk-devel)[root@server1] -openjdk.x86_64 java--openjdk-devel.x86_64 SSH [root@server1] yum install -y ssh Hadoo…

he Apache Hadoop software library is a framework that allows for the distributed processing of large data sets across clusters of computers using simple programming models The Apache™ Hadoop® project develops open-source software for reliable, scalab…

Hadoop MapReduce Next Generation - Setting up a Single Node Cluster. Purpose This document describes how to set up and configure a single-node Hadoop installation so that you can quickly perform simple operations using Hadoop MapReduce and the Hadoop…

Hadoop: Setting up a Single Node Cluster. Hadoop: Setting up a Single Node Cluster. Purpose Prerequisites Supported Platforms Required Software Installing Software Download Prepare to Start the Hadoop Cluster Standalone Operation Pseudo-Distributed O…

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…

一.现象 三台机器 crxy99,crxy98,crxy97(crxy99是NameNode+DataNode,crxy98和crxy97是DataNode) 按正常命令启动HDFS之后,HDFS一直处于安全模式(造成启动Hive的时候失败,不能向HDFS上写数据),正常情况下是在启动的前30秒处于安全模式,之后就退出了. 可以采取强制退出安全模式的方式; 安全模式的相关命令: 获取安全模式的状态: hdfs dfsadmin -safemode get 安全模式打开 hdfs dfsadmin…

Apache Hadoop 2.9.2 完全分布式部署(HDFS) 作者:尹正杰 版权声明:原创作品,谢绝转载!否则将追究法律责任. 一.环境准备 1>.操作平台 [root@node101.yinzhengjie.org.cn ~]# cat /etc/redhat-release CentOS Linux release (Core) [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# uname…

集群中遇到了文件个数超出限制的错误: 0)昨天晚上spark 任务突然抛出了异常:org.apache.hadoop.hdfs.protocol.NSQuotaExceededException: The NameSpace quota (directories and files) of directory /mydir is exceeded: quota=100000 file count=100001 1)错误提示内容信息:集群中遇到了文件个数超出限制的错误. 2)问题错误来自于hado…