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

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5.1 Reference
This section provides information about development content including MapR-FS and MapReduce development topics and reference content.
Reference Guide
maprcli and REST API Syntax
cluster
Manages cluster features, gateways, and cluster-wide settings.
cluster mapreduce get
Displays the cluster-wide default for the MapReduce mode.

MapR 5.1 Documentation

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.
      - cluster feature enable
        Allows features to be enabled. Used after upgrading.
      - cluster feature list
        Allows features to be listed. Used after upgrading.
      - cluster gateway delete
        Deletes the list of MapR gateways from a source MapR cluster.
      - cluster gateway get
        Lists the MapR gateways that a source MapR cluster is using.
      - cluster gateway list
        Lists all of the gateways that a source MapR cluster is using.
      - cluster gateway local
        Lists the gateways that are configured on the MapR cluster where this command is run.
      - cluster gateway resolve
        Lists the gateways configured on MapR cluster that are up and running at the time that the command is issued.
      - cluster gateway set
        Specifies the locations of the MapR gateways that a source MapR cluster can use for table replication to a destination MapR cluster or for indexing table data in an Elasticsearch cluster.
      - cluster mapreduce get
        Displays the cluster-wide default for the MapReduce mode.
      - cluster mapreduce set
        Sets the cluster-wide MapReduce mode.
    - 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.
    - 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.

cluster mapreduce get

Displays the cluster-wide default for the MapReduce mode.

Syntax

CLI

maprcli cluster mapreduce get

REST

http[s]://<host>:<port>/rest/cluster/mapreduce/get

Output Fields

Field	Description
default_mode	Displays either `yarn` or `classic`.
mapreduce_version	Displays the hadoop version associated with the default_mode.

Sample Output

default_mode  mapreduce_version  
            classic       0.20.2

Examples

CLI

maprcli cluster mapreduce get

REST

https://r1n1.sj.us:8443/rest/cluster/mapreduce/get