About Release 7.9.0
This site contains documentation for HPE Ezmeral Data Fabric release 7.9.0, including installation, configuration, administration, and reference content, as well as content for the associated ecosystem components and drivers.
7.9.0 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.
7.9.0 Data Fabric
HPE Ezmeral Data Fabric is the industry-leading data platform for AI and analytics that solves enterprise business needs.
7.9.0 Administration
This section describes how to manage the nodes and services that make up a cluster.
7.9.0 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.
- 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.
- Apache Kafka Wire Protocol Service
  HPE Ezmeral Data Fabric Streams supports Apache Kafka Wire Protocol Service. Apache Kafka Wire Protocol Service is a TCP/IP service that emulates a Kafka cluster backed by HPE Ezmeral Data Fabric Streams. The service makes it possible for Apache Kafka clients written in any programming language to access topics in HPE Ezmeral Data Fabric Streams.
- 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.
  - Ecosystem Packs
  - Apache Airflow
    This topic provides an overview of Apache Airflow on HPE Ezmeral Data Fabric.
  - AsyncHBase
    - Configuring the Default Database for AsyncHBase
      For AsynchHBase 1.7 and later, you can configure whether AsyncHBase accesses HBase tables or MapR-DB tables by default. If this value is not configured, AsyncHBase will determine the table type.
    - Compiling and Running AsyncHBase Applications
      When you compile or run AsyncHBase applications, you need to include the required AsyncHBase libraries.
    - AsyncHBase Script
      Data Fabric provides an AsyncHBase script that you can use to run applications and generate the AsyncHBase classpath.
    - AsyncHBase Behavior with HPE Ezmeral Data Fabric Database Binary Tables
      After you install AsyncHBase, you can use the AsyncHBase libraries to provide asynchronous access to HPE Ezmeral Data Fabric Database binary tables. However, it is important to note the behavior that is specific to using AsyncHBase with HPE Ezmeral Data Fabric Database.
    - Using OpenTSDB with AsyncHBase
      OpenTSDB can use Data Fabric’s AsyncHBase to perform time-series data-plots on HPE Ezmeral Data Fabric Database binary tables.
    - GetRequest API
      MapR includes an additional constructor for the GetRequest class which takes an extra qualifier.
  - Cascading
  - Apache Drill
  - Hadoop
  - HBase
  - HBase Client and HPE Ezmeral Data Fabric Database Binary Tables
  - HCatalog
  - Hive
  - HttpFS
  - Hue
  - Livy
    Apache Livy is primarily used to provide integration between Hue and Spark.
  - HPE Ezmeral Data Fabric Streams Clients and Tools
    Describes the supported HPE Ezmeral Data Fabric Streams tools and clients.
  - NiFi
    This topic provides an overview of Apache NiFi on HPE Ezmeral Data Fabric.
  - OTel
    This topic provides an overview of OpenTelemetry on HPE Ezmeral Data Fabric.
  - Ranger
  - Apache Spark
  - YARN
  - Zeppelin
- 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.

AsyncHBase Behavior with HPE Ezmeral Data Fabric Database Binary Tables

After you install AsyncHBase, you can use the AsyncHBase libraries to provide asynchronous access to HPE Ezmeral Data Fabric Database binary tables. However, it is important to note the behavior that is specific to using AsyncHBase with HPE Ezmeral Data Fabric Database.

The Scanner.setMaxNumKeyValues method, when run against HPE Ezmeral Data Fabric Database binary tables, does not behave as documented.: According to the AsyncHBase documentation, this method sets “the maximum number of KeyValues the server is allowed to return in a single RPC response.”
When you use this method with HPE Ezmeral Data Fabric Database binary tables, the value for the maximum number of key values is ignored and the full set of KeyValues is always returned.

List<RegionClientStats> regionStats() is not supported: As of AsyncHBase 1.7-1603, List<RegionClientStats> regionStats() is not supported and when it is used the API does not return statistics.

HPE Ezmeral Data Fabric Database ignores HBase configurations in the asynchbase.conf file: As of AsyncHBase 1.7-1603, the conf object can be used to override Hbase properties that were previously only configured in the asynchbase.conf file. The asynchbase.conf file is located in the asynchbase installation directory. HPE Ezmeral Data Fabric Database does not use these Hbase configurations and therefore they are ignored by HPE Ezmeral Data Fabric Database

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HPE Ezmeral Data Fabric – Customer-Managed 7.9.0 Documentation
Abstract	This site contains documentation for the customer-managed platform of the HPE Ezmeral Data Fabric version 7.9.0 including installation, configuration, administration, and reference content, as well as content for the associated bundled ecosystem components and drivers.
Published	November 2024
Edition	7.9.0