YARN Commands

This section describes the YARN commands.

Commands

All YARN commands are invoked by the /usr/bin/yarn script.

Usage: yarn [--config confdir] [COMMAND] [COMMAND_OPTIONS]

COMMAND_OPTION	Description
`--config confdir`	Overrides the default Configuration directory. Default is `/conf`.
`COMMAND`	Commands
`COMMAND_OPTIONS`	Command options

The following yarn commands may be run on MapR distribution of Apache Hadoop:

Command	Description
`application`	Lists applications, or prints the status or kills the specified application.
`classpath`	Prints the class path needed to get the Hadoop jar and the required libraries
debugcontrol	Saves additional DEBUG logs for scheduling to a separate file without restarting the RM
`daemonlog`	Gets and sets the log level for each daemon
`jar`	Runs jar file
`logs`	Dumps container logs
node	Prints node report(s)
queue	Prints queue information
`rmadmin`	Performs administrative tasks for Resource Manager
`version`	Print the version

The following yarn commands are not supported on the MapR distribution of Apache Hadoop:

You can use the maprcli node services command or the Control System to start the services. For more information, see Managing Services.