org.apache.hadoop.mapred.tools

类 MRAdmin

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.hadoop.mapred.tools.MRAdmin

所有已实现的接口:

Configurable, Tool

public class MRAdmin
extends Configured
implements Tool

Administrative access to Hadoop Map-Reduce. Currently it only provides the ability to connect to the JobTracker and 1) refresh the service-level authorization policy, 2) refresh queue acl properties.

构造器概要

构造器

构造器和说明
MRAdmin()
MRAdmin(Configuration conf)

方法概要

方法

限定符和类型	方法和说明
static void	main(String[] args)
int	refreshSuperUserGroupsConfiguration() refreshSuperUserGroupsConfiguration JobTracker.
int	run(String[] args) Execute the command with the given arguments.

从类继承的方法 org.apache.hadoop.conf.Configured

getConf, setConf

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从接口继承的方法 org.apache.hadoop.conf.Configurable

getConf, setConf

构造器详细资料

MRAdmin

public MRAdmin()

MRAdmin

public MRAdmin(Configuration conf)

方法详细资料

refreshSuperUserGroupsConfiguration

public int refreshSuperUserGroupsConfiguration()
                                        throws IOException

refreshSuperUserGroupsConfiguration JobTracker.

返回:

exitcode 0 on success, non-zero on failure

抛出:

IOException

run

public int run(String[] args)
        throws Exception

从接口复制的说明: Tool

Execute the command with the given arguments.

指定者:

run 在接口中 Tool

参数:

args - command specific arguments.

返回:

exit code.

抛出:

Exception

main

public static void main(String[] args)
                 throws Exception

抛出:

Exception