hdfs shell常用命令

hadoop shell常用命令

hadoop fs -ls /user/deploy/recsys/workspace/ouyangyewei

查看ouyangyewei目录文件

hadoop fs -mkdir /user/deploy/recsys/workspace/ouyangyewei/input

在ouyangyewei目录下创建input文件夹

hadoop fs -rm /user/deploy/recsys/workspace/ouyangyewei/input/input.txt

删除input.txt文件

hadoop fs -rmr /user/deploy/recsys/workspace/ouyangyewei/input

删除input目录以及目录下的所有文件

hadoop fs -put ./input.txt /home/deploy/recsys/workspace/ouyangyewei/input

把当前目录下的input.txt文件复制到input目录下

hadoop fs -put /home/pms/ouyangyewei/data/categoryLevel3.txt /user/pms/ouyangyewei/input/category_level
将本地服务器上的categoryLevel.txt文件移动到hdfs上

hadoop fs -dus /data/share/trackinfo/ds=2014-05-12

查看文件 “/data/share/trackinfo/ds=2014-05-12”的大小（以字节为单位）

hadoop jar recommender-dm-1.0-SNAPSHOT-lib.jar com.yhd.ml.statistics.click.WordCount /home/deploy/recsys/workspace/ouyangyewei/input /home/deploy/recsys/workspace/ouyangyewei/output

运行Job，指定的jar包是recommender-dm-1.0-SNAPSHOT-lib.jar，主类是com.yhd.ml.statistics.click.WordCount，输入目录是input，输出目录是output

hadoop job -kill job_201403291618_274044

杀掉hadoop的job

hadoop fs -du -h /user/hive/pms/pms_bought

查看/user/hive/pms/pms_bought目录下每个子文件的大小

hadoop fs -du -h /user/hive/pms/pms_bought

查看/user/hive/pms/pms_bought目录总容量大小