MapR 5.2 is at End of Life (EOL) and no longer supported. Please see the latest documentation. This documentation is not being updated.

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About MapR 5.2
This site contains the main documentation for Version 5.2 of the MapR Converged Data Platform, including installation, configuration, administration, and reference information.
Version 5.2.1 Release Notes
5.2.1 is the latest maintenance release of the MapR Converged Data Platform 5.2. These notes list the differences between 5.2.1 and 5.2.0. Use these when you install 5.2.1 or upgrade to 5.2.1.
List of YARN Enhancements in Version 5.2.1
Bug fixes from various Hadoop versions backported into 2.7.0 and used in MapR Converged Data Platform 5.2.1

MapR 5.2 Documentation

About MapR 5.2
This site contains the main documentation for Version 5.2 of the MapR Converged Data Platform, including installation, configuration, administration, and reference information.
- MapR System Overview
  MapR is a complete enterprise-grade distribution for Apache Hadoop. The MapR Converged Data Platform has been engineered to improve Hadoop’s reliability, performance, and ease of use.
- MapR Sandbox for Hadoop
  The MapR Sandbox for Hadoop is a fully-functional single-node cluster that gently introduces business analysts, current and aspiring Hadoop developers, and administrators (database, system, and Hadoop) to the big data promises of Hadoop and its ecosystem.
- Version 5.2.2 Release Notes
  5.2.2 is the latest maintenance release of the MapR Converged Data Platform 5.2. These notes list the differences between 5.2.2 and 5.2.0. Use these when you install 5.2.2 or upgrade to 5.2.2.
- Version 5.2.1 Release Notes
  5.2.1 is the latest maintenance release of the MapR Converged Data Platform 5.2. These notes list the differences between 5.2.1 and 5.2.0. Use these when you install 5.2.1 or upgrade to 5.2.1.
  - What's New in Version 5.2.1
    Provides a summary of new functionality in the 5.2.1 maintenance release.
  - Packages and Dependencies for MapR 5.2.1
    Details about packages and dependencies for the MapR Converged Data Platform software and Hadoop ecosystem components for the MapR 5.2.1 release.
  - Installation and Upgrade Notes
    Read this before installing or upgrading to Version 5.2.2, 5.2.1, or 5.2.0.
  - List of YARN Enhancements in Version 5.2.1
    Bug fixes from various Hadoop versions backported into 2.7.0 and used in MapR Converged Data Platform 5.2.1
  - Operational Changes for 5.2.1
    Summary of functional changes new to Version 5.2.1
  - Known Issues
  - Issues Resolved in 5.2.1
- Version 5.2 Release Notes
  These release notes contain information about Version 5.2 of the MapR Converged Data Platform.

List of YARN Enhancements in Version 5.2.1

Bug fixes from various Hadoop versions backported into 2.7.0 and used in MapR Converged Data Platform 5.2.1

MapR 5.2 runs the 2.7.0 version of Hadoop. In the MapR Converged Data Platform 5.2.1 release, a number of bug fixes from various Hadoop versions were backported into 2.7.0.

Bug fixes backported in 5.2.1

The following bug fixes were backported from Hadoop 2.7.3 to Hadoop 2.7.0 for MapR 5.2.1:

YARN-3727: Localization failure happened due to existing cache directories
MAPREDUCE-25695: Allow AM to specify a port range for starting its webapp

See List of YARN Enhancements in Version 5.2.0 for backports in Mapr Converged Data Platform 5.2.0