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.
6.1 MapR Data Platform
MapR Data Platform is the industry-leading data platform for AI and analytics that solves enterprise business needs.
- MapR XD Distributed File and Object Store
  MapR XD Distributed File and Object Store is a distributed file system for data storage, data management, and data protection. MapR XD supports mounting and cluster access via NFS and FUSE-based POSIX clients (basic, platinum, or PACC) and also supports access and management via HDFS APIs.
- MapR Database
  MapR Database is an enterprise-grade, high-performance, NoSQL database management system that you can use for real-time, operational analytics.
- MapR Event Store For Apache Kafka
  MapR Event Store For Apache Kafka brings integrated publish and subscribe messaging to the MapR Converged Data Platform.
  - Architecture
    Streams contain topics that have logical collections of messages.
  - Producers
    Producers are data-generating applications, such as sensors in automobiles or activity loggers in servers. Producers create messages with the collected data and publish the messages to MapR Event Store For Apache Kafka topics, specifically, to MapR Event Store For Apache Kafka topic-partitions.
  - Consumers
    Consumers are applications that you create such as analytics applications, reporting tools, or enterprise dashboards.
  - Stream Replication
    You can replicate streams to other MapR clusters worldwide, or to other streams within a MapR cluster.
  - Stream Security
    The adminperm, copyperm, comsumeperm, produceperm, and topicperm security permissions protect topics in a stream from unauthorized access. In addition, MapR supports user impersonation.
- MapR Data Fabric for Kubernetes
  This section describes the MapR Data Fabric for Kubernetes, which include the Container Storage Interface (CSI) driver for multiple container-orchestration systems, and the FlexVolume driver for Kubernetes.
- Cluster Management
  Provides a synopsis of the various cluster components and their management.
- Security
  Provides an overview of the MapR security features.
- YARN
- Client Connections
  The following sections describe how a client connects to local and remote MapR clusters.
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.

Stream Security

The adminperm, copyperm, comsumeperm, produceperm, and topicperm security permissions protect topics in a stream from unauthorized access. In addition, MapR supports user impersonation.

ACE Permissions

The following Access Control Expression (ACE)s are used to protect topics in a stream from unauthorized access. ACEs are set when you create or edit a stream.

adminperm: Determines which users can modify ACEs for a stream, set up replication of a stream, and modify other attributes of a stream.
IMPORTANT By default, only the stream owner can modify this setting; however, a patch is available that changes this behavior. After applying the patch, both the stream owner and the MAPR user can modify this setting. The patch works with MapR Core-6.1.0. To install patches, see Applying a Patch.
copyperm: Determines the users who can run the mapr copystream and mapr diffstreams utilities on the stream.; Users with this permission can publish messages to topics in a stream, read messages in topics from a stream, and create or remove topics in a stream. This permission is a combination of the consumeperm, produceperm, and topicperm permissions.
consumeperm: Determines the users who can read messages in topics from a stream.
produceperm: Determines the users who can publish messages to topics in a stream.
topicperm: Determines the users who can create topics in a stream or remove them.

The following example shows the adminperm, consumeperm, produceperm, and topicperm permissions on a stream named traffic_sensors, which includes the topics traffic_sensors_sf and traffic_sensors_ny.

Figure 1. How permissions grant or deny access to a stream

For general information about ACEs, see ACE Syntax.

User Impersonation

MapR Event Store For Apache Kafka supports user impersonation through the Java API. See MapR Event Store For Apache Kafka Java API Library for more information. MapR Event Store For Apache Kafka does not support user impersonation through the C API or Python API.

Kafka REST supports outbound user impersonation. See User Impersonation for more information.