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.
  - Upgrade Workflows
    This section describes three common methods for upgrading from one MapR core release to another. The workflows in this section introduce you to the high-level steps for each method and provide links to pages showing more detail.
  - Upgrading MapR Core
    Describes the process of upgrading MapR core.
    - Upgrading and Your License
      If you are upgrading from MapR version 5.0 or earlier, the Base License file must be manually updated on all nodes in your cluster.
    - MapR Core Upgrade Process
      When you upgrade MapR core, you will also upgrade a number of cluster components.
    - Planning Your MapR Core Upgrade
      Describes how to develop a successful plan for your upgrade process.
    - Preparing to Upgrade MapR Core
      Complete these pre-upgrade steps for MapR core.
    - Upgrading MapR Core With the MapR Installer
      If the cluster that you want to upgrade was installed using the MapR Installer, use the MapR Installer to upgrade MapR core.
    - Upgrading MapR Core Without the MapR Installer
      You can upgrade MapR core without using the MapR Installer.
    - Finishing the MapR Core Upgrade
      This section provides post-upgrade steps for MapR core.
  - Upgrading Ezmeral Ecosystem Packs
    Describes how to upgrade Ezmeral Ecosystem Packs (EEPs), either as part of a MapR core upgrade or to take advantage of a new EEP for the current version of MapR core.
  - Preparing the Cluster for a Maintenance Update
    This section identifies how to prepare for applying either a minor update or a patch.
  - Performing a Maintenance Update
    Perform a maintenance update when you want to upgrade to a new patch version of MapR core or apply a patch.
- Setting Up Clients and Services
  Describes how to set up and use interfaces to an cluster from a client computer.
- 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 Core Upgrade Process

When you upgrade MapR core, you will also upgrade a number of cluster components.

The following cluster components are upgraded with MapR core:

Storage Layer: MapR File System fileserver and Container Location Database (CLDB) services
Cluster Management Services: ZooKeeper and Warden
NFS server
Web server, including the Control System user interface and REST API to cluster services
The maprcli commands for managing cluster services
Any new features and performance enhancements introduced with the new version.

When you upgrade MapR core, the following changes occur within the /opt/mapr directory:

If required, additional folders are added.
Product binaries are replaced by binaries associated with the new version.

Existing configuration files remain in the active directory and default configuration files associated with the new version are installed in a new directory:

Default Configuration File Directories	Active Configuration File Directories
`/opt/mapr/conf.new`	`/opt/mapr/conf`
`/opt/mapr/conf/conf.d.new`	`/opt/mapr/conf/conf.d`

When MapR core includes an updated hadoop common version, a new hadoop directory is installed and the following changes also occur:

The /opt/mapr/conf/hadoop_version file reflects the new hadoop version number.
Paths in the /opt/mapr/conf/conf.d/warden.<servicename>.conf files reflect the new hadoop directory.
The following symlinks in /opt/mapr/lib reflect the new hadoop version:
- hadoop-auth-2.x.x.jar
- hadoop-yarn-api-2.x.x.jar
- hadoop-yarn-client-2.x.x.jar
- hadoop-yarn-common-2.x.x.jar
- hadoop-common-2.x.x.jar
A new hadoop 2.x directory is created under /opt/mapr/hadoop.
If a hadoop 2.x directory already exists, the configuration files from the existing hadoop 2.x directory will replace the default configuration files in the new 2.x hadoop directory thereby retaining the existing configuration. The existing hadoop 2.x directory is also moved into the following directory: /opt/mapr/hadoop/OLD_HADOOP_VERSION.