Enabling Impersonation for the HPE Ezmeral Data Fabric Superuser

Provides a procedure necessary to implement superuser impersonation.

1. Open the following file in a text editor:

   /opt/mapr/hadoop/hadoop-2.7.0/etc/hadoop/core-site.xml

2. Add the following hadoop.proxyuser properties:

   <property>
           <name>hadoop.proxyuser.mapr.hosts</name>
           <value>*</value>
   </property><property>
           <name>hadoop.proxyuser.mapr.groups</name>
           <value>*</value>
   </property>

   The hosts setting (*) allows the mapr superuser to connect from any host to impersonate a user.

   The groups setting (*) allows the mapr superuser to impersonate any user in any group.

   Note: Do not use anything other than a single asterisk here. Other parts of HPE Ezmeral Data Fabric ignore the values here and treat them as if each is set to a single asterisk.
3. Close the file, saving any changes that you made.