HPE Ezmeral Data Fabric 6.2 is In Maintenance and transitions to "End of Maintenance" in June 2024. Please see the latest documentation.

About Release 6.2
This site contains documentation for HPE Ezmeral Data Fabric release 6.2 including installation, configuration, administration, and reference content, as well as content for the associated bundled ecosystem components and drivers.
6.2 Installation
This section contains information about installing and upgrading HPE Ezmeral 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.
6.2 Data Fabric
HPE Ezmeral Data Fabric is the industry-leading data platform for AI and analytics that solves enterprise business needs.
- HPE Ezmeral Data Fabric File Store
  HPE Ezmeral Data Fabric File Store is a distributed file system for data storage, data management, and data protection. File Store 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.
- HPE Ezmeral Data Fabric Database
  HPE Ezmeral Data Fabric Database is an enterprise-grade, high-performance, NoSQL database management system that you can use for real-time, operational analytics.
- HPE Ezmeral Data Fabric Streams
  HPE Ezmeral Data Fabric Streams brings integrated publish and subscribe messaging to the Data Fabric Converged Data Platform.
- Kubernetes Interfaces for Data Fabric
  This section describes the Kubernetes Interfaces for Data Fabric, which include the Container Storage Interface (CSI) driver for multiple container-orchestration systems, and the FlexVolume driver for Kubernetes.
  - CSI Storage Plugin Overview
    This page describes how the Container Storage Interface (CSI) Storage Plugin can be used to expose the HPE Ezmeral Data Fabric to the containerized workload on Kubernetes.
  - Kubernetes Interfaces for Data Fabric FlexVolume Driver
    Describes how the FlexVolume driver for Kubernetes Interfaces for Data Fabric integrates with Kubernetes to provide persistent data for containers.
    - Static vs. Dynamic Provisioning
      Describes static and dynamic storage provisioning using the FlexVolume driver on a Kubernetes cluster.
    - POSIX Integration and Licensing
      Explains how the basic and platinum POSIX clients are supported on a Kubernetes cluster,
- Cluster Management
  Provides a synopsis of the various cluster components and their management.
- Performance
  Describes how to tune system performance, manage RDMA, and optimize CLDB tables.
- Security
  Provides an overview of the data-fabric security features.
- YARN
- Client Connections
  The following sections describe how a client connects to local and remote data-fabric clusters.
6.2 Administration
This section describes how to manage the nodes and services that make up a cluster.
6.2 Development
This section contains information related to application development for Ezmeral ecosystem components and HPE Ezmeral 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.

POSIX Integration and Licensing

Explains how the basic and platinum POSIX clients are supported on a Kubernetes cluster,

The data-fabric POSIX client provides fast-data access between the container and the data-fabric filesystem. For FlexVolume plug-in, the POSIX client is installed onto all Kubernetes worker nodes when you install the volume plug-in through its .yaml configuration file. For CSI Driver, the POSIX client is installed onto the CSI Driver container only.

For static provisioning, the volume plug-in uses the POSIX client to mount the data-fabric filesystem. The provisioner does not use the POSIX client to provision volumes, but a provisioned volume is mounted through POSIX when the plug-in is called after PV creation.

Support for Basic and Platinum Licenses

By default, the product includes the Basic POSIX client package, but you can enable the Platinum license, if needed. See Enabling the Platinum Posix Client for FlexVolume Driver and CSI Driver. Only the POSIX client is supported. NFSv3 and NFSv4 are currently not supported.

While the Platinum POSIX client offers up to five times better performance than the Basic POSIX client, resource utilization is significantly higher for the Platinum client. For a comparison of the Basic and Platinum packages, see Preparing for Installation.

Mounting Multiple MapR Paths

It is inefficient in both host resources and licenses to mount multiple data-fabric paths in the same Pod. In FlexVolume Driver, multiple mount points will consume additional resources on the Kubernetes host node. A more resource-efficient strategy is to use subpaths. See Using subpaths in the Kubernetes documentation.