(2)配置环境变量 JAVA_HOME=/soft/jdk1.7.0_45 (必须要写,hadoop会去找名叫JAVA_HOME的值) HADOOP_HOME=/soft/hadoop-2.7.5 (必须要写)PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/soft/jdk1.7.0_45/bin:/soft/hadoop-2.7.5/bin:/so...
javac -classpath $HADOOP_HOME/share/hadoop/common/hadoop-common-2.6.1.jar: $HADOOP_HOME/share/hadoop/mapreduce/hadoop-mapreduce-client-core-2.6.1.jar: $HADOOP_HOME /share/hadoop/common/lib/commons-cli-1.2.jar -d ./classes XXX.java 然后将所有class文件组装成jar包: $JAVA_HOME/bin/jar -c...
<value>$HADOOP_HOME,$HADOOP_HOME/share/hadoop/common/*, $HADOOP_HOME/share/hadoop/common/lib/*, $HADOOP_HOME/share/hadoop/hdfs/*,$HADOOP_HOME/share/hadoop/hdfs/lib/*, $HADOOP_HOME/share/hadoop/yarn/*,$HADOOP_HOME/share/hadoop/yarn/lib/*, $HADOOP_HOME/share/hadoop/mapreduce/*,$HADOOP...
Hadoop下载地址:https://archive.apache.org/dist/hadoop/common/hadoop-3.1.3/ 解压 $ tar -zxvf hadoop-3.1.3.tar.gz -C /opt/module/ 添加到环境变量 $ sudo vim /etc/profile.d/my_env.sh #HADOOP_HOME export HADOOP_HOME=/opt/module/hadoop-3.1.3 export PATH=$PATH:$HADOOP_HOME/bin export ...
<value>JAVA_HOME,HADOOP_COMMON_HOME,HADOOP_HDFS_HOME,HADOOP_CONF_DIR,CLASSPATH_PREPEND_DISTCACHE,HADOOP_YARN_HOME,HADOOP_MAPRED_HOME</value> </property> </configuration> 5、修改hadoop-env.sh,配置java jdk路径,大概在27行配置,如下: export JAVA_HOME=/usr/lib/JDK_2021/jdk1.8.0_301 ...
This command was run using /home/hadoop/apps/hadoop-2.7.5/share/hadoop/common/hadoop-common-2.7.5.jar [potter@potter2 bin]$ 1. 2. 3. 4. 5. 6. 7. 8. 4、Hadoop初始化 [hadoop@hadoop1 ~]$ hadoop namenode -format 5、启动
JAVA_HOME,HADOOP_COMMON_HOME,HADOOP_HDFS_HOME,HADOOP_CO NF_DIR,CLASSPATH_PREPEND_DISTCACHE,HADOOP_YARN_HOME,HADOOP_MAP RED_HOME MapReduce 配置文件-配置 mapred-site.xml [hadoop@hadoop102 hadoop]$ vim mapred-site.xml mapred-site.xml内容如下: ...
<value>JAVA_HOME,HADOOP_COMMON_HOME,HADOOP_HDFS_HOME,HADOOP_CONF_DIR,CLASSPATH_PREPEND_DISTCACHE,HADOOP_YARN_HOME,HADOOP_MAPRED_HOME</value> </property> </configuration> (4)MapReduce配置文件 配置mapred-site.xml [gakki@hadoop102 hadoop]$ vim mapred-site.xml ...
(4)Hadoop Common——支持其他模块的工具模块 包括以下几部分: Configuration 公共的配置,包括集群节点、节点资源、IP、主机名、参数等配置项 RPC 远程过程调用,是分布式框架中多个节点之间进行网络通讯的首选方式,高效、稳定、安全,Hadoop中实现了Hadoop RPC框架。
https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-common/SingleCluster.html 在Configuration中可找到: 图1-1-1:Apache官网Hadoop配置信息 二、运行调试 1. 目录及文件准备 在运行程序前需要先创建存放数据的目录及数据文件。 (1) 创建数据文件目录,后面介绍的模式都会用到此目录: ...