YARN CLI
This section includes the reference documentation for the YARN shell.
All YARN commands are invoked by the bin/yarn script. Running the bin/yarn script without arguments prints the description for all commands.
The script usage is as follows:
$ yarn [SHELL_OPTIONS] COMMAND [GENERIC_OPTIONS] [SUB_COMMAND] [COMMAND_OPTIONS]YARN has an option parsing framework that employs parsing generic options as well as running classes.
| Field | Description |
|---|---|
SHELL_OPTIONS |
The common set of shell options |
GENERIC_OPTIONS |
The common set of options supported by multiple commands |
COMMAND_OPTIONS |
Various commands with their options are described in the following sections |
User commands
| Command | Description |
|---|---|
Used to print application reports, kill application, and manage long running application |
|
Prints applicationattempt reports |
|
Prints the classpath needed to get the Hadoop JAR and the required libraries |
|
Prints container(s) report |
|
Runs a JAR file. Users can bundle their YARN code in a JAR file and execute it using this command |
|
Dumps the container logs |
|
Prints node report(s) |
|
Prints queue information |
|
Displays YARN applications and the resources they consume |
|
Prints the Hadoop version |
|
Displays computed Hadoop environment variables |
Administration commands
| Command | Description |
|---|---|
Gets/sets the log level for a log identified by a qualified class name in the daemon dynamically |
|
Starts the NodeManager |
|
Starts the web proxy server |
|
Starts the ResourceManager |
|
Runs ResourceManager admin client |
|
Updates scheduler configuration. Note, this feature is in alpha phase and is subject to change |
|
Runs Shared Cache Manager admin client |
|
Starts the Shared Cache Manager |
|
Starts the TimeLineServer |
|
Starts the RegistryDNS server |