org.apache.hadoop.mapred

接口 AdminOperationsProtocol

所有超级接口:

VersionedProtocol

所有已知实现类:

JobTracker

public interface AdminOperationsProtocol
extends VersionedProtocol

Protocol for admin operations. This is a framework-public interface and is NOT_TO_BE_USED_BY_USERS_DIRECTLY.

字段概要

字段

限定符和类型	字段和说明
static long	versionID Version 1: Initial version.

方法概要

方法

限定符和类型	方法和说明
void	refreshNodes() Refresh the node list at the JobTracker
void	refreshQueues() Refresh the queue acls in use currently.
boolean	setSafeMode(JobTracker.SafeModeAction safeModeAction) Set safe mode for the JobTracker.

从接口继承的方法 org.apache.hadoop.ipc.VersionedProtocol

getProtocolVersion

字段详细资料

versionID

static final long versionID

Version 1: Initial version. Added refreshQueueAcls. Version 2: Added node refresh facility Version 3: Changed refreshQueueAcls to refreshQueues

另请参阅:

常量字段值

方法详细资料

refreshQueues

void refreshQueues()
                   throws IOException

Refresh the queue acls in use currently. Refresh the queues used by the jobtracker and scheduler. Access control lists and queue states are refreshed.

抛出:

IOException

refreshNodes

void refreshNodes()
                  throws IOException

Refresh the node list at the JobTracker

抛出:

IOException

setSafeMode

boolean setSafeMode(JobTracker.SafeModeAction safeModeAction)
                    throws IOException

Set safe mode for the JobTracker.

参数:

safeModeAction - safe mode action

返回:

current safemode

抛出:

IOException