hadoop mradmin
The hadoop mradmin
command runs Map-Reduce
administrative commands.
Syntax
hadoop [ Generic Options ] mradmin
[-refreshServiceAcl]
[-refreshQueues]
[-refreshNodes]
[-refreshUserToGroupsMappings]
[-refreshSuperUserGroupsConfiguration]
[-help [cmd]]
Parameters
The following command parameters are supported for hadoop
mradmin
:
Parameter |
Description |
---|---|
|
Reload the service-level authorization policy file Job tracker will reload the authorization policy file. |
|
Reload the queue acls and state JobTracker will reload the mapred-queues.xml file. |
|
Refresh user-to-groups mappings. |
|
Refresh superuser proxy groups mappings. |
|
Refresh the hosts information at the job tracker. |
|
Displays help for the given command or all commands if none is specified. |
The following generic options are supported for hadoop
mradmin
:
Generic Option |
Description |
---|---|
|
Specify an application configuration file. |
|
Use value for given property. |
|
Specify a filesystem. |
|
Specify a job tracker. |
|
Specify comma separated files to be copied to the map reduce cluster. |
|
Specify comma separated jar files to include in the classpath. |
|
Specify comma separated archives to be unarchived on the computer machines. |