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  1. Preface
  2. Introduction to Big Data Management Administration
  3. Authentication
  4. Running Mappings on a Cluster with Kerberos Authentication
  5. Authorization
  6. Cluster Configuration
  7. Cloud Provisioning Configuration
  8. Data Integration Service Processing
  9. Connections
  10. Multiple Blaze Instances on a Cluster
  11. Monitoring REST API

Big Data Management Administrator Guide

Big Data Management Administrator Guide

HDFS Permissions

HDFS Permissions

HDFS permissions determine what a user can do to files and directories stored in HDFS. To access a file or directory, a user must have permission or belong to a group that has permission.
HDFS permissions are similar to permissions for UNIX or Linux systems. For example, a user requires the
r
permission to read a file and the
w
permission to write a file.
When a user or application attempts to perform an action, HDFS checks if the user has permission or belongs to a group with permission to perform that action on a specific file or directory.

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