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HDFS filesystem permission

Robeen Member Posts: 1,990 Silver Badge


I would like to know why I am getting permission denied when I execute 'touch test01.txt' in hdfs home directory:


-bash-4.2$ touch test01.txt

touch: cannot touch ‘test01.txt’: Permission denied

Also , I would like to know on what storage is our HDFS?




  • nihitthakkar
    nihitthakkar Member Posts: 106 Red Ribbon

    The Hadoop Distributed File System (HDFS) is the primary distributed data storage system used by Hadoop applications. Its cluster employs a NameNode and DataNode architecture to implement a distributed file system that provides high-performance access to data. The HDFS implements a permissions model for that shares much of the POSIX model. You must be the owner of a file or directory to change its permissions. You can specify the –R option to make recursive changes with the chgrp, chmod and chown commands through the directory structure you specify.

  • Robeen
    Robeen Member Posts: 1,990 Silver Badge

    When you say "primary distributed data storage system" do you mean hardware?

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