示例说明

最近更新时间: 2026-03-13 09:03:00

数据准备

hdfs dfs -mkdir -p /tmp/test/input/
hdfs dfs -put input.txt /tmp/test/input/

#input.txt示例
LiuYang,female,20
YuanJing,male,10
GuoYijun,male,20
CaiXuyu,female,20
Liyuan,male,20
FangBo,female,50
LiuYang,female,20
YuanJing,male,10
GuoYijun,male,20
CaiXuyu,female,50
FangBo,female,60

运行任务

hadoop jar mapreduce-test-1.0-SNAPSHOT.jar  /tmp/test/input /tmp/test/output

查看结果

hdfs dfs -ls /tmp/test/output/
hdfs dfs -cat /tmp/test/output/part-r-00000