About Release 8.0.0
This site contains documentation for HPE Data Fabric release 8.0.0, including installation, configuration, administration, and reference content, as well as content for the associated ecosystem components and drivers.
8.0.0 Installation
This section contains information about installing HPE Data Fabric software. It also contains information about how to migrate data and applications from an Apache Hadoop cluster to a HPE Ezmeral Data Fabric cluster.
8.0.0 Upgrade
This section describes how to upgrade HPE Data Fabric software.
8.0.0 Data Fabric
HPE Data Fabric is the industry-leading data platform for AI and analytics that solves enterprise business needs.
8.0.0 Administration
This section describes how to manage the nodes and services that make up a cluster.
- Working with Multiple Fabrics Using the Data Fabric UI
  This section describes how you can get started learning about, installing, and using the HPE Data Fabric.
- Administering Users and Clusters
  Lists topics that help manage a Data Fabric cluster.
- Administering Nodes
  Provides a synopsis of managing nodes in a cluster.
- Administering Volumes
  This section provide information about how to organize and manage data using volumes, a unique feature of HPE Data Fabric clusters.
- Administering Files and Directories
- Administering Tables
  Administration of the HPE Data Fabric Database is done primarily via the command line (maprcli) or with the Managed Control System (MCS). Regardless of whether the HPE Data Fabric Database table is used for binary files or JSON documents, the same types of commands are used with slightly different parameter options. HPE Data Fabric Database administration is associated with tables, columns and column families, and table regions.
- Administering Streams
- Administering Data Fabric Gateways
  A HPE Data Fabric gateway mediates one-way communication between a source HPE Data Fabric cluster and a destination cluster. You can replicate HPE Data Fabric Database tables (binary and JSON) and HPE Data Fabric Streams streams. HPE Data Fabric gateways also apply updates from JSON tables to their secondary indexes and propagate Change Data Capture (CDC) logs.
- Administering Services
- Monitoring the Cluster
  This section describes how to monitor the health and performance of a MapR cluster.
- Configuring Security
  Describes how to configure security and manage secure clusters.
- Managing Secure Clusters
  Provides procedures that will enable you to use Data Fabric clusters securely.
- Administering the Data Access Gateway
  The HPE Data Fabric Data Access Gateway is a service that acts as a proxy and gateway for translating requests between lightweight client applications and the HPE Data Fabric cluster. This section describes considerations when upgrading the service, how to modify configuration settings, and how to administer and manage the service.
- Planning for High Availability
- Administrator's Reference
  This section contains in-depth reference information for the administrator.
  - maprcli and REST API Syntax
    This section provides information about the HPE Data Fabric command API. Most commands can be run on the command-line interface (CLI), or by making REST requests programmatically or in a browser.
  - MinIO Client (mc) Commands
    Lists mc commands that you can use to perform operations, such as creating and editing buckets and accounts in HPE Data Fabric Object Store.
  - Utilities
    Contains information about various scripts and utilities, that help setup, maintain, and monitor clusters.
  - Configuration Files
    This section contains reference information about various configuration files.
  - Alarms Reference
    The pages in this section provide details about all of the types of alarms.
  - HPE Data Fabric Environment
    This section provides information associated with the Data Fabric environment.
    - HPE Data Fabric Parameters
      Describes Data Fabric parameters and their default values.
    - Default HPE Data Fabric Configurations
      Lists sources from which default Data Fabric configuration parameters are derived.
    - Environment Variables
      Describes the environment variables specific to the HPE Data Fabric.
    - Ports Used by HPE Data Fabric Software
      Lists the ports used by Data Fabric services.
    - Log Files
      Lists the log files for each HPE Data Fabric component.
      - Increasing Log Retention
      - Setting the Tracing Level
      - Configuring Profiling for Operations
      - Archiving CLDB Logs
      - Enabling Runtime Logging
      - Viewing Audit Logs
      - Viewing Application Logs
        Logging Options
        YARN Log Aggregation
        Enabling YARN Log Aggregation
        Enabling YARN Local-Node Log Aggregation
        Viewing Logs for Completed Applications
        Editing the Retention Settings of Aggregated Logs
        Centralized Logging
        Describes the centralized logging feature of HPE Data Fabric.
      - Viewing the Service Log
        Esplains how to view service logs using Kibana.
    - Cluster Maintenance Schedule
      Lists a sample maintenance schedule for the cluster.
    - Language Support for HPE Data Fabric Database Tables
      This section lists the human languages that HPE Data Fabric tables can store, retrieve, and process.
- Troubleshooting Cluster Administration
  Lists the common errors and their solutions.
- Best Practices for Backing Up HPE Data Fabric Information
  Lists the best practices and performance considerations to follow when backing up HPE Data Fabric information.
- IPv6 Support in Data Fabric
  Describes the IPv6 support feature for Data Fabric.
8.0.0 Development
This section contains information related to application development for Ezmeral ecosystem components and HPE Data Fabric products, including the file system, Database (Key-Value and JSON), and Event Streams.
Other Docs
This section contains release-independent information, including: Installer documentation, Ecosystem release notes, interoperability matrices, security vulnerabilities, and links to other Data Fabric version documentation.
Glossary
Definitions for commonly used terms in MapR Converged Data Platform environments.

YARN Log Aggregation

The YARN Log Aggregation option aggregates and moves log files for completed applications from the local file system to the HPE Data Fabric . This allows users to view the entire set of logs for a particular application using the HistoryServer UI or by running the yarn logs command.

By default, YARN container logs are not aggregated on the Data Fabric . Instead, the logs are retained for 3 hours on the local file system before they are deleted. To enable YARN log aggregation or to edit the configuration of YARN log aggregation, you must edit the yarn-site.xml file in the following directory: /opt/mapr/hadoop/hadoop-2.x.x/etc/hadoop/

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HPE Data Fabric 8.0.0 Software Documentation
Abstract	This site contains documentation for HPE Data Fabric Software version 8.0.0 including installation, configuration, administration, and reference content, as well as content for the associated bundled ecosystem components and drivers.
Published	November 2025
Edition	8.0.0
Topic last updated	2022-07-11