运行hadoop自带示例程序wordcount
创建 a.txt
[[email protected] ~]$ vim a.txt
spark hadoop spark
hadoop yarn resouremanager
yarn
hadoop
创建 b.txt
[[email protected] ~]$ vim b.txt
1001 aaa
1002 bbb
hadoop
hadoop1
创建 wordcount/input hdfs的目录
hadoop fs -mkdir -p /wordcount1/input1
将 a.txt 和 b.txt 上传到 hdfs 的 wordcount/input
hadoop fs -put a.txt /wordcount/input
hadoop fs -put b.txt /wordcount/input
运行自带wordcount程序
hadoop jar hadoop-mapreduce-examples-2.7.7.jar wordcount /wordcount/input /output
查看运行结果
hadoop fs -cat /output/part-r-00000