HPE Ezmeral Data Fabric 6.1.x is In Maintenance and transitions to "End of Maintenance" in June 2024. Please see the latest documentation.

About MapR 6.1
This site contains the main documentation for Version 6.1 of the MapR Converged Data Platform, including installation, configuration, administration, and reference information.
6.1 Installation
This section contains information about installing and upgrading MapR software. It also contains information about how to migrate data and applications from an Apache Hadoop cluster to a MapR cluster.
- Planning the Cluster
  Describes information and factors used in planning your cluster.
- Installing MapR and MapR Ecosystem Components
  Describes how to install MapR software and ecosystem components with or without the MapR Installer.
- Installing the File Migration Service on the Edge Cluster
  Describes how to install the File Migration service on CentOS nodes.
- Installing the MapR XD Distributed File and Object Store
  Describes how to install MapR XD software with or without the MapR Installer.
- Installing MapR Data Fabric for Kubernetes
  This section describes how to plan for and install the MapR Container Storage Interface (CSI) Storage Plugin and the MapR Data Fabric for Kubernetes FlexVolume Driver.
- Installing MapR in the Cloud
  Provides an overview of MapR cloud installer capabilities.
- Installing Metering
  This section describes how to install Metering by using the MapR Installer or manual steps.
- Upgrading MapR Core or EEP Components
  Depending on your current configuration, you may choose to upgrade the release version (core), ecosystem components, clients, or monitoring components.
- Setting Up Clients and Services
  Describes how to set up and use interfaces to an cluster from a client computer.
  - Direct Access NFS™
    Describes how to configure Direct Access NFS to mount the MapR File System to a local directory.
  - MapR Client
    Describes how to install the MapR client to run Hadoop commands, jobs, and applications from a client machine.
  - MapR POSIX Clients
    Describes how to install the POSIX loopback NFS, and the FUSE-based POSIX clients.
    - Installing the mapr-loopbacknfs Package
      MapR POSIX clients enable application servers, web servers, and other client nodes and applications to read and write directly and securely to a MapR cluster.
    - Installing FUSE-based POSIX Client Packages
      Describes how to install a FUSE-based Basic or Platinum POSIX client package.
  - HPE Ezmeral Data Fabric PACC
    This container gives you seamless access to MapR Data Platform cluster services.
  - Running Hadoop Commands on a Mac and Windows Client
    The location from which you run Hadoop commands depends on your machine.
  - Installing the MAST Gateway
    Describes how to install the MapR Automated Storage Tiering (MAST) Gateway service.
  - Enabling Soft Mount and Setting the Timeout
    Describes how to enable soft mount, and set the RPC timeout for MapR components.
  - Troubleshooting
    Describes changes to core-site.xml file to troubleshoot issues.
- Setting Up the Control System
  Describes how to configure and access the Control System.
- Migrating to MapR
  Provides instructions for migrating business-critical data and applications from an Apache Hadoop cluster to a MapR cluster.
- Applying a Patch
  You can apply a patch by using the MapR Installer, by using the command line (a manual process), or by using an Installer Stanza.
6.1 MapR Data Platform
MapR Data Platform is the industry-leading data platform for AI and analytics that solves enterprise business needs.
6.1 Administration
This section describes how to manage the nodes and services that make up a cluster.
6.1 Development
This section contains information related to application development for Ezmeral ecosystem components and MapR Data Platform products, including the file system, Database (Key-Value and JSON), and Event Streams.
Other Docs
This section contains release-independent information, including: MapR Installer documentation, Ecosystem release notes, interoperability matrices, security vulnerabilities, and links to other MapR version documentation.
Glossary
Definitions for commonly used terms in MapR Converged Data Platform environments.

MapR POSIX Clients

Describes how to install the POSIX loopback NFS, and the FUSE-based POSIX clients.

This section contains instructions for installing the MapR POSIX Clients. The MapR software provides a POSIX loopback NFS client package, and FUSE-based POSIX Basic and Platinum client packages. Each FUSE-based POSIX client package implies a specific MapR filesystem throughput optimization of n/G per second. These clients can be installed and used according to the same principles as the POSIX loopback NFS client.

Overview of loopback NFS and FUSE-based POSIX Clients

The NFS version 3.0 protocol does not have secure data transit, nor authentication capabilities to authenticate users who connect to the MapR NFS version 3.0 server. Any client and any user can connect to the MapR NFS server, remotely.

Loopback NFS tightens security and ensures that only authenticated users can access the NFS server. The loopback NFS client runs on the same node as the NFS server, and can connect to only that NFS server based on the ticket generated. Remote clients cannot access the server.

TIP For enhanced performance and reliability, use a FUSE-based POSIX client that works similar to the loopback NFS server in terms of security and authentication, and always set the MAPR_SUBNETS enivronment variable.

NOTE NFS version 4.0 has in-built security and authentication. Remote clients and users can access MapR NFS version 4.0 servers securely.