how to : Execute HDFS commands from DataNode

previous post - move file from DataNode system to NameNode

command work on NameNode from DataNode or any other Hadoop installed system(which may/may not be part of hadoop cluster)

HDFS 'FS' command execute from DataNode

    bdalab@solai:/opt$ hadoop fs -fs hdfs://masterNodeIP:9000/ -rm /input/log.csv

Above command will be executed from DataNode, File '/input/log.csv' will be removed from NameNode.
here, masterNodeIP -> IP address of remote system

List/show all the files in NameNode from DataNode

    bdalab@solai:/opt$ hadoop fs -fs hdfs://masterNodeIP:9000/ -ls /

Create dir 'pjt' in NameNode from DataNode

    bdalab@solai:/opt$ hadoop fs -fs hdfs://masterNodeIP:9000/ -mkdir /pjt

all the above command will be run from DataNode and executed on NameNode

Next : Hive table Partition - resolved issue