MapR 5.1 is at End of Life (EOL) and no longer supported. Please see the latest documentation. This documentation is not being updated.

5.1 Reference
This section provides information about development content including MapR-FS and MapReduce development topics and reference content.
- Development Guide
- Reference Guide
  - MapR Control System
  - Hadoop Commands
  - HBase Shell for MapR-DB
    You can manage MapR-DB tables using HBase shell commands and additional HBase shell commands included in the MapR distribution of Hadoop.
  - YARN commands
  - maprcli and REST API Syntax
    - Overview
      Each command reference page includes the command syntax, a table that describes the parameters, and examples of command usage.
    - acl
      Describes the acl commands used to access control lists (ACLs).
    - alarm
      Describes the alarm commands that perform functions related to system alarms.
    - audit
      Describes commands used to audit operations related to cluster management and data access.
    - blacklist
      Describes commands used to blacklist and to list blacklisted users.
    - cluster
      Manages cluster features, gateways, and cluster-wide settings.
    - config
      Manages configuration values for the MapR cluster.
    - dashboard info
      Displays a summary of information about the cluster.
    - dialhome
    - disk
      Describes command for working with disks.
      - disk add
        Adds one or more disks to the specified node. Permissions required: fc or a.
      - disk list
        Lists the disks on a node.
      - disk listall
        Lists all disks.
      - disk remove
        Removes a disk from MapR-FS. Permissions required: fc or a.
    - dump
      Returns key information about volumes, containers, storage pools, and MapR cluster services for debugging and troubleshooting.
    - entity
      Manages entities (users and groups).
    - fid
      Displays information about MapR-DB or file-system components that are identified by a FID.
    - job
      Manages Hadoop jobs running on the cluster.
    - license
      Manages MapR licenses.
    - nagios generate
      Generates a Nagios Object Definition file that describes the cluster nodes and the services running on each.
    - nfsmgmt
      Refreshes NFS exports and server cache.
    - node
      Manages nodes in the cluster
    - rlimit
      Manages resource usage limits for the cluster.
    - schedule
      Manages schedules.
    - service list
      Lists all services on the specified node, the memory allocated for each service, the state of each service, and log path for each service.
    - setloglevel
      Sets log level on individual services.
    - stream
      Manages stream functionality.
    - table
      Performs functions related to MapR-DB tables.
    - task
      Manipulates information about the Hadoop jobs that are running on your cluster.
    - trace
      Lets you view and modify the trace buffer, and the trace levels for the system modules.
    - urls
      Displays the status page URL for the specified service.
    - virtualip
      Manages virtual IP addresses for NFS nodes.
    - volume
      Manages volumes, snapshots and mirrors.
  - Alarms Reference
  - Utilities
  - Default MapR Configurations
  - Configuration Files
  - MapR Environment
  - MapR Parameters
  - Best Practices
  - Language Support for MapR-DB Tables
  - Glossary
    This section contains defintions for commonly used terms in MapR Converged Data Platform environments.
  - Source Code for MapR Software
- Glossary
  This section contains defintions for commonly used terms in MapR Converged Data Platform environments.

disk

Describes command for working with disks.

Disk Fields

The following table shows the fields displayed in the output of the disk list and disk listall commands. You can choose which fields (columns) to display and sort in ascending or descending order by any single field.

Verbose Name	Terse Name	Description
hostname	hn	Hostname of node which owns this disk/partition.
diskname	n	Name of the disk or partition.
status	st	Disk status: 0 = Good 1 = Bad disk
powerstatus	pst	Disk power status: 0 = Active/idle (normal operation) 1 = Standby (low power mode) 2 = Sleeping (lowest power mode, drive is completely shut down)
mount	mt	Disk mount status 0 = unmounted 1 = mounted
fstype	fs	File system type
modelnum	mn	Model number
serialnum	sn	Serial number
firmwareversion	fw	Firmware version
vendor	ven	Vendor name
totalspace	dst	Total disk space, in MB
usedspace	dsu	Disk space used, in MB
availablespace	dsa	Disk space available, in MB
	err	Disk error message, in English. Note that this will not be translated. Only sent if st == 1.
	ft	Disk failure time, MapR disks only. Only sent if st == 1.