Code First

开启：sudo sbin/hadoop-daemon.sh start namenodesudo sbin/hadoop-daemon.sh start  datanode关闭：sudo sbin/hadoop-daemon.sh start namenodesudo sbin/hadoop-daemon.sh stop datanode或者:sbin/stop-all.sh...

前提是已经搭建好了Hadoop平台：如下第一步：创建HDFS目录：文件输入目录： hadoop fs -mkdir -p /csz/wordcount/input第二步：新建数据文件：mywordI thought a thought. But the thought I thought wasn't the thought I thought I

第一步：mysql已经安装好了第二步下载hive包并tar开第三步：修改环境变量：第四步：修改Hive的配置文件 到hive 配置文件目录中cd /home/hadoop/hive-2.1.1/conf/把初始化的文件 复制一份出来 并且改名cp hive-env.sh.template hive-env.shcp hive-default.xml.template hive-site.xml...

Ubuntu环境：打开~/.bashrc，添加行：把那些/etc/profile中的环境变量全部加进入1使生效：source .bashrc

命令：bin>>导入hive:  ./sqoop import --connect jdbc:mysql://127.0.0.1:3306/test --username root --password root --table info --delete-target-dir --num-mappers 1 --hive-import --hive-database test --h...

全局的配置/etc/profilesudo nano /etc/profile# /etc/profile: system-wide .profile file for the Bourne shell (sh(1))# and Bourne compatible shells (bash(1), ksh(1), ash(1), ...).if [ "${PS1-}" ]; th...

2018-03-21 12:07:07,545 INFO org.apache.hadoop.hdfs.server.common.Storage: Lock on /workspace/hadoop/dfs/data/in_use.lock acquired by nodename 20317@cuishizhou012018-03-21 12:07:07,547 WARN org.apache

sqoop安装： 下载： sqoop-1.4.6-cdh5.5.2.tar.gz 解压：sudo tar -zxvd sqoop-1.4.6-cdh5.5.2.tar.gz 配置：sudo nano /etc/profileexport SQOOP_HOME=/usr/sqoop/sqoop-1.4.6-cdh5.5.2export PATH=$PATH:$SQOOP_HOEM...