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.
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.
- Application Development Process
  Before you start developing applications on the HPE Ezmeral Data Fabric platform, consider how you will get the data into the platform, the storage format of the data, the type of processing or modeling that is required, and how the data will be accessed.
  - Step 1: Select a Data Storage Format
    Consider the data format options and determine how you want to use to store your data.
  - Step 2: Write Data to HPE Ezmeral Data Fabric
    Depending on your use case, move existing data onto the HPE Ezmeral Data Fabric platform or write data directly to the platform.
  - Step 3: Explore Ways to Work With the Data
    Once the data is in the HPE Ezmeral Data Fabric platform, explore the various features and components available on the platform and determine your path. You may want to access data in its initial format or perform some data modeling or processing prior to accessing the data.
  - Step 4: Set Up the Development Environment
    Before you start building the application, figure out how your the application will connect to the cluster and what the library dependencies and installation requirements are.
    - Connect to the Cluster
      Application are often run on nodes that are not part of the Data Fabric cluster. There are many methods to connect to a MapR cluster; this section briefly describes each option.
    - HPE Ezmeral Data Fabric Database JSON Application Requirements
      The following tables include the minimal node requirements for building and running HPE Ezmeral Data Fabric Database JSON table applications.
    - HPE Ezmeral Data Fabric Database Binary Application Requirements
      The following tables include the minimal node requirements for building and running HPE Ezmeral Data Fabric Database binary table applications.
    - HPE Ezmeral Data Fabric Streams Application Requirements
      The following tables include the minimal node requirements for building and running HPE Ezmeral Data Fabric Streams consumer and producer applications.
    - file system Application Requirements
      The following tables include the minimal node requirements for building and running file system applications.
    - YARN Application Requirements
      The following tables include the minimal node requirements for building and running YARN applications.
  - Step 5: Build the Application
    Start building an application! This section lists a few of the sample applications available in HPE Ezmeral Data Fabric.
- File Store and Apps
  The following sections provide information about accessing the File Store with C and Java applications.
- HPE Ezmeral Data Fabric Database and Apps
  This section contains information about developing client applications for JSON and key-value tables.
- HPE Ezmeral Data Fabric Streams and Apps
  HPE Ezmeral Data Fabric Streams brings integrated publish and subscribe messaging to HPE Ezmeral Data Fabric.
- MapReduce and Apps
  This section contains information associated with developing YARN applications.
- Kubernetes Interfaces for Data Fabric
  This section describes how to leverage the capabilities of the Kubernetes Interfaces for Data Fabric.
- Ecosystem Components
  The following sections provide information about each open-source project that is supported by the HPE Ezmeral Data Fabric.
- Maven and the HPE Ezmeral Data Fabric
  This section discusses topics associated with Maven and the HPE Ezmeral Data Fabric.
- Developer's Reference
  This section contains in-depth information for the developer.
- API Documentation
  HPE Ezmeral Data Fabric supports public APIs for file system, HPE Ezmeral Data Fabric Database, and HPE Ezmeral Data Fabric Streams. These APIs are available for application-development purposes.
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.

Step 4: Set Up the Development Environment

Before you start building the application, figure out how your the application will connect to the cluster and what the library dependencies and installation requirements are.

Applications are often run on edge nodes which are nodes that are not part of the cluster. Setting up an edge node so that it can be used to develop and run applications consists of the following steps:

Selecting a client that you will use to connect to the cluster.
Installing additional clients required for your use case.
Determining the application dependencies.

NOTE The dependencies to build and run applications differ based on your use case and the various types of data or tools that are part of an application.

The following sub-topics include the various methods to connect to the cluster, and minimal requirements to build and run applications.