Pre-Upgrade Steps for HttpFS

You need to back up configuration files if you made configuration changes that you want to carry over to the next version. Typically, the following configuration files contain changes:
  • /opt/mapr/httpfs/httpfs-1.0/share/hadoop/httpfs/tomcat/webapps/webhdfs/WEB-INF/web.xml
  • /opt/mapr/httpfs/httpfs-1.0/share/hadoop/httpfs/tomcat/conf/server.xml
  • /opt/mapr/httpfs/httpfs-1.0/share/hadoop/httpfs/tomcat/conf/tomcat-users.xml
To back up configuration files, copy the files to a location outside the MapR installation. After upgrading, you can reapply changes to the updated httpFS installation using the backup.