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
  - 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.
    - KSQL
      KSQL is an open-source streaming SQL engine that implements continuous, interactive queries.
      - KSQL Security
        Discusses KSQL security topics.
      - KSQL Configuration
        Set KSQL configuration and security parameters in the ksql-server.properties file. The default port for KSQL is 8084.
        KSQL Configuration Parameters
        KSQL Security Parameters
        Describes KSQL security parameters.
      - KSQL Reference
        KSQL-specific commands are commands for setting your KSQL configuration, exiting the CLI, and so on.
      - Pipe Code Sample
        Provides sample code for a Pipe example.
      - KSQL Demo
        The following demo example creates a stream, performs a non-persistent query, and a persistent query.
    - Kafka Streams
      Kafka Streams is a programming library used for creating Java or Scala streaming applications and, specifically, building streaming applications that transform input topics into output topics.
    - Kafka REST Proxy
      The Kafka REST Proxy provides a RESTful interface to HPE Ezmeral Data Fabric Streams clusters to consume and produce messages and to perform administrative operations.
    - Kafka Connect
      Kafka Connect is a utility for streaming data between HPE Ezmeral Data Fabric Streams and other storage systems.
    - Kafka Schema Registry
      Kafka Schema Registry provides a RESTful interface for storing and retrieving schemas.
    - Structured Streaming in Spark
      Starting in EEP 5.0.0, structured streaming is supported in Spark.
  - 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.

KSQL Configuration

Set KSQL configuration and security parameters in the ksql-server.properties file. The default port for KSQL is 8084.

Configuring KSQL to Run in Non-Interactive (Headless) Mode

To run KSQL in non-interactive mode, set the parameters shown and then start KSQL.

NOTE

Note that the ksql.default.stream parameter is optional, but recommended. This parameter sets the default stream to consume from and send the messages to. The default stream is used if the topic name does not include the stream name. For example, if a message is sent to exampleTopic and this parameter is set to /exampleStream, then the message is sent to /exampleStream:exampleTopic.

Set the following properties in the /opt/mapr/ksql/ksql-<version>/etc/ksql/ksql-server.properties file:

ksql.command.topic.suffix=commands
ksql.service.id=app2
listeners=http://localhost:8084
ksql.default.stream=/sample-stream

Start KSQL:

$ KSQL_INSTALL_DIR/bin/ksql-server-start /opt/mapr/ksql/ksql-<version>/etc/ksql/ksql-server.properties --queries-file some-queries-file.sql

Configuring KSQL to Run in Interactive Mode

The following example shows the configuration parameters that you must set in the ksql-server.properties file to run KSQL in interactive (distributed) mode:

ksql.command.topic.suffix=commands
            ksql.service.id=app2
            listeners=http://192.168.121.73:8084
            ksql.default.stream=/sample-stream

NOTE

You must set the listeners parameter to an actual IP address.

For more information

For installation information, see Installing KSQL.
For Apache Kafka information, see the Apache Kafka Streams API, Apache Kafka Producer Clients, and the Apache Kafka Consumer Clients.

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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	December 2024
Edition	7.9.0