HDFS中常用到的命令

1、hadoop fs

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hadoop fs -ls / hadoop fs -lsr hadoop fs -mkdir /user/hadoop hadoop fs -put a.txt /user/hadoop/ hadoop fs -get /user/hadoop/a.txt / hadoop fs -cp src dst hadoop fs -mv src dst hadoop fs -cat /user/hadoop/a.txt hadoop fs -rm /user/hadoop/a.txt hadoop fs -rmr /user/hadoop/a.txt hadoop fs -text /user/hadoop/a.txt hadoop fs -copyFromLocal localsrc dst 與hadoop fs -put功能類似。 hadoop fs -moveFromLocal localsrc dst 將本地文件上傳到hdfs，同時刪除本地文件。

2、hadoop fsadmin 

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hadoop dfsadmin -report hadoop dfsadmin -safemode enter | leave | get | wait hadoop dfsadmin -setBalancerBandwidth 1000

3、hadoop fsck

4、start-balancer.sh