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
    - Drill Tutorial
    - Drill-on-YARN
      - Drill-on-YARN Overview
      - Configuring Drill to Run Under YARN
      - Migrate Drill to Run Under YARN
        Explains how to migrate Drill to run under YARN instead of the Warden service.
      - Additional Drill-on-YARN Configuration Options
        Mapping of drill-env.sh to drill-on-yarn.conf Options
      - Multiple Drill Clusters within YARN
      - Drill-on-YARN Command Line Tool
      - Application Master Web UI
      - Drill-on-YARN Limitations
      - Configuring Drill-on-Yarn on a Secure Cluster
        Describes how to enable SASL for Drill and SQLLine to run Drill-on-YARN in a secure cluster.
    - Configuring Drill
      Lists the data-fabric-specific configuration for Drill.
    - Working with Drill
    - Securing Drill
      An administrator can install Drill with the default security configuration or manually configure custom security for Drill.
    - Data Fabric Drill Drivers
      HPE Ezmeral Data Fabric provides Drill ODBC and JDBC drivers that you can download and use to connect Drill to BI tools. The drivers are updated periodically to include support for new functionality in Drill.
    - Drill Configuration Files
      The Drill installation includes configuration files with start-up options that you can modify prior to starting Drill.
    - Mask Sensitive Data in Query Logs and Profiles
      Starting in Drill 1.20.2 (EEP 9.0.0 installed on Core 7.1.0), you can define a set of rules in a JSON file to mask sensitive data in Drill query logs and query profiles.
    - Monitoring Drill Metrics
    - Optimizing Queries with Indexes
      HPE Ezmeral Data Fabric Database provides a highly scalable key-value database platform on which you can run SQL queries using Drill. As a part of the 6.0 release, HPE Ezmeral Data Fabric Database natively supports indexes on secondary fields in JSON tables.
    - Drill Limitations
      Provides information about Drill limitations and solutions where applicable.
    - Vulnerability Reports
      Provides vulnerability information in relation to 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.

Mapping of drill-env.sh to drill-on-yarn.conf Options

When you run Drill as a standalone application, you set startup options, such as Drillbit memory, in the $DRILL_HOME/conf/drill-env.sh start up script. Under YARN, Drill still reads $DRILL_SITE/drill-env.sh for configuration options, however Drill-on-YARN provides the $DRILL_SITE/drill-on-yarn.conf file to configure options that were formerly set in drill-env.sh.

The following table maps the drill-env.sh environment variables to their equivalent configuration parameters in drill-on-yarn.conf:

drill-env.sh Environment Variable	drill-on-yarn.conf Configuration Parameter
DRILL_MAX_DIRECT_MEMORY *	drill.yarn.drillbit.max-direct-memory
DRILL_HEAP *	drill.yarn.drillbit.heap
DRILL_JAVA_OPTS	drill.yarn.drillbit.vm-args (Added to those in drill-env.sh.)
SERVER_GC_OPTS (to add GC logging)	Drill.yarn.drillbit.log-gc (To enable GC logging)
DRILL_HOME	Set automatically when files are localized (drill.yarn.drill-install. localize is true), else drill.yarn.drill-install. drill-home.
DRILL_CONF_DIR	Set automatically when files are localized, else uses the normal defaults.
DRILL_LOG_DIR	Set automatically to point to YARN’s log directory unless disabled by setting drill.yarn.drillbit. disable-yarn-logs to false. If disabled, uses the normal Drill defaults.
DRILL_CLASSPATH_PREFIX *	Drill.yarn.drillbit. prefix-class-path
HADOOP_CLASSPATH *	drill.yarn.hadoop.class-path (or, better drill.yarn.drillbit. extn-class-path.)
HBASE_CLASSPATH *	Drill.yarn.hadoop. hbase-class-path (or, better drill.yarn.drillbit. extn-class-path.)
EXTN_CLASSPATH * (New in Drill 1.8.)	Drill.yarn.drillbit. extn-class-path
DRILL_CLASSPATH *	drill.yarn.drillbit.class-path

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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