PowerScale OneFS HDFS Configuration Guide

Hadoop user and group accounts

Before implementing Hadoop, ensure that the user and groups accounts that you will need to connect over HDFS are configured on the PowerScale cluster.

Additionally, ensure that the user accounts that your Hadoop distribution requires are configured on the PowerScale cluster on a per-zone basis. The user accounts that you need and the associated owner and group settings vary by distribution, requirements, and security policies. The profiles of the accounts, including UIDs and GIDS, on the PowerScale cluster should match the profiles of the accounts on your Hadoop compute clients.

OneFS must be able to look up a local Hadoop user or group by name. If there are no directory services, such as Active Directory or LDAP, that can perform a user lookup, you must create a local Hadoop user or group. If directory services are available, a local user account or user group is not required.