MapR 5.0 Documentation : Upgrading HttpFS

If you installed HttpFS with the MapR Installer, use the latest version of the MapR Installer to perform the upgrade. 

Complete the following steps to upgrade HttpFS:

1. Update Repositories or Download Packages

MapR's rpm and deb repositories always contain the HttpFS version recommended for the latest release of the MapR core. For more details on setting up repositories, see Preparing Packages and Repositories.

To update the repository cache

If you plan to install from a repository, update the repository cache on each node where HttpFS is installed:

On RedHat / CentOS
# yum clean all
# zypper refresh
On Ubuntu
# apt-get update

2. Backup Configuration Files

If you have changed configuration properties, save configuration files to a backup location on all nodes where HttpFS is installed. 
For example, you may want to backup the following configuration files:

  •  /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

3. Uninstall HttpFS and Install a New HttpFS Package

Run the following set of commands as root or with sudo

On RedHat / CentOS
yum remove mapr-httpfs
rm -rf /opt/mapr/httpfs/
yum install mapr-httpfs
On Ubuntu
apt-get autoremove mapr-httpfs
rm -rf /opt/mapr/httpfs/
apt-get install mapr-httpfs
zypper remove mapr-httpfs
rm -rf /opt/mapr/httpfs/
zypper install mapr-httpfs

4.Migrate HttpFS Configuration

If you saved configuration files to a backup location, migrate the custom configuration settings from the backup location to the installation folder. 

5. Start HttpFS Services

sudo -u mapr /opt/mapr/httpfs/httpfs-1.0/sbin/ start