Big Data Management Administrator Guide > Running Mappings on a Cluster with Kerberos Authentication > Running Mappings with Kerberos Authentication Overview
  

Running Mappings with Kerberos Authentication Overview

You can run mappings on a Hadoop cluster that uses MIT or Microsoft Active Directory (AD) Kerberos authentication. Kerberos is a network authentication protocol that uses tickets to authenticate access to services and nodes in a network.
If the Informatica domain uses Kerberos authentication, you must configure a one-way cross-realm trust to enable the Hadoop cluster to communicate with the Informatica domain. The Informatica domain uses Kerberos authentication on an AD service. The Hadoop cluster uses Kerberos authentication on an MIT service. Enable the cross-realm trust to enable the MIT service to communicate with the AD service.
Based on whether the Informatica domain uses Kerberos authentication or not, you might need to perform the following tasks to run mappings on a Hadoop cluster that uses Kerberos authentication: