About Release 7.6.1
This site contains documentation for HPE Ezmeral Data Fabric release 7.6.1, including installation, configuration, administration, and reference content, as well as content for the associated ecosystem components and drivers.
7.6.1 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.
7.6.1 Data Fabric
HPE Ezmeral Data Fabric is the industry-leading data platform for AI and analytics that solves enterprise business needs.
7.6.1 Administration
This section describes how to manage the nodes and services that make up a cluster.
7.6.1 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.
- 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.
  - HPE Ezmeral Data Fabric Database Shell (JSON Tables)
    The mapr dbshell is a tool that enables you to create and perform basic manipulation of JSON tables and documents. You run dbshell by typing mapr dbshell on the command line after logging into a node in a HPE Ezmeral Data Fabric cluster.
  - Utilities for HPE Ezmeral Data Fabric Database JSON Tables
    HPE Ezmeral Data Fabric Database JSON provides utilities to copy, export, and import data, compare table content, and verify the consistency of secondary indexes.
  - HPE Ezmeral Data Fabric Database HBase Shell (Binary Tables)
    You can manage HPE Ezmeral Data Fabric Database tables using HBase shell commands and additional HBase shell commands included in the HPE Ezmeral Data Fabric distribution of Hadoop.
  - Utilities for HPE Ezmeral Data Fabric Database Binary Tables
    HPE Ezmeral Data Fabric Database provides utilities to copy and compare data in HPE Ezmeral Data Fabric Database binary tables.
  - HPE Ezmeral Data Fabric Streams Utilities
  - YARN Commands
    This section describes the YARN commands.
    - yarn application
      The yarn application lists applications, or prints the status or kills the specified application.
    - yarn classpath
    - yarn daemonlog
    - yarn debugcontrol
      used to save additional DEBUG logs for scheduling in YARN to a separate file without restarting the RM.
    - yarn jar
    - yarn logs
      Dumps the YARN container logs.
    - yarn node
    - yarn queue
    - yarn rmadmin
    - yarn version
  - Source Code for HPE Ezmeral Data Fabric Software
    HPE releases source code to the open-source community for enhancements that HPE has made to the Apache Hadoop project and other ecosystem components.
  - Hadoop Commands
    This section describes the Hadoop commands.
- 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.

yarn node

Prints node report(s)

Syntax

yarn node
     [-list [-states <States>] | [-all]]
     [-status NodeId]

Parameters

Parameter Description

-list [-states <states>] | [-all]]

Parameter	Description
-list [-states <states>] \| [-all]]	Lists all running nodes. Optionally, filter nodes based on state or choose to list all the nodes. Use `-states <states>` to filter nodes based on a comma-separate list of node states. Use -`all` to list all nodes.
-status NodeId	Prints the status report of the node.

Lists all running nodes. Optionally, filter nodes based on state or choose to list all the nodes.

Use -states <states> to filter nodes based on a comma-separate list of node states.
Use -all to list all nodes.

-status NodeId Prints the status report of the node.