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.
    - Installing MapR NFS
      Describes how to install the NFS service on a node.
    - Before You Start Using MapR NFS
  - 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.
  - 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.

Before You Start Using MapR NFS

Make sure the following conditions are met before using the MapR NFS gateway:

The stock Linux NFS service must not be running. Linux NFS and MapR NFS cannot run concurrently.
MapR NFSv3 and NFSv4 should not be installed on the same node.
The lock manager (nlockmgr) must be disabled.
On Red Hat and CentOS v6.0 and higher, the rpcbind service must be running.
You can use the command ps ax | grep rpcbind to check.
On Red Hat and CentOS v5.x and lower, and on Ubuntu and SLES, the portmapper service must be running.
You can use the command ps ax | grep portmap to check.
The mapr-nfs package for NFSv3 or mapr-nfs4server package for NFSv4 must be present and installed.
You can list the contents in the /opt/mapr/roles directory to check for nfs in the list.
Make sure you have applied a Community Edition (M3) license or an Enterprise Edition (M5) license (paid or trial) to the cluster.
See Adding a License.
Make sure the MapR NFS service is started.
See Starting, Stopping, and Restarting MapR NFSv3 or Starting, Stopping, and Restarting MapR NFSv4.
Verify that the primary group of the user listed for mapr.daemon.user in the /opt/mapr/conf/daemon.conf file is mapr.daemon.group.
Restart Warden after any changes to daemon.conf.

For information about mounting the cluster using:

NFSv3, see Accessing Data with NFS v3.
NFSv4, see Accessing Data with NFS v4.

For information on upgrading your cluster, see Upgrading MapR Core.

WARNING To preserve compatibility with 32-bit applications and system calls, MapR-NFS uses 32-bit inode numbers by default. On 64-bit clients, this default forces the client's 64-bit inode numbers to be hashed down to 32 bits. Hashing 64-bit inodes down to 32 bits can potentially cause inum conflicts. To change the default behavior to 64-bit inode numbers, set the value of the Use32BitFileId property to 0 in the nfsserver.conf file, then restart the NFS server.