org.apache.hadoop.hbase.quotas

类 QuotaCache

java.lang.Object

org.apache.hadoop.hbase.quotas.QuotaCache

所有已实现的接口:

Stoppable

@InterfaceAudience.Private
 @InterfaceStability.Evolving
public class QuotaCache
extends Object
implements Stoppable

Cache that keeps track of the quota settings for the users and tables that are interacting with it. To avoid blocking the operations if the requested quota is not in cache an "empty quota" will be returned and the request to fetch the quota information will be enqueued for the next refresh. TODO: At the moment the Cache has a Chore that will be triggered every 5min or on cache-miss events. Later the Quotas will be pushed using the notification system.

字段概要

字段

限定符和类型	字段和说明
static String	REFRESH_CONF_KEY

构造器概要

构造器

构造器和说明
QuotaCache(RegionServerServices rsServices)

方法概要

限定符和类型	方法和说明
QuotaLimiter	getNamespaceLimiter(String namespace) Returns the limiter associated to the specified namespace.
QuotaLimiter	getTableLimiter(TableName table) Returns the limiter associated to the specified table.
QuotaLimiter	getUserLimiter(org.apache.hadoop.security.UserGroupInformation ugi, TableName table) Returns the limiter associated to the specified user/table.
UserQuotaState	getUserQuotaState(org.apache.hadoop.security.UserGroupInformation ugi) Returns the QuotaState associated to the specified user.
boolean	isStopped()
void	start()
void	stop(String why)

从类继承的方法 java.lang.Object

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

字段详细资料

REFRESH_CONF_KEY

public static final String REFRESH_CONF_KEY

另请参阅:

常量字段值

构造器详细资料

QuotaCache

public QuotaCache(RegionServerServices rsServices)

方法详细资料

start

public void start()
           throws IOException

抛出:

IOException

stop

public void stop(String why)

指定者:

stop 在接口中 Stoppable

isStopped

public boolean isStopped()

指定者:

isStopped 在接口中 Stoppable

getUserLimiter

public QuotaLimiter getUserLimiter(org.apache.hadoop.security.UserGroupInformation ugi,
                                   TableName table)

Returns the limiter associated to the specified user/table.

参数:

ugi - the user to limit

table - the table to limit

返回:

the limiter associated to the specified user/table

getUserQuotaState

public UserQuotaState getUserQuotaState(org.apache.hadoop.security.UserGroupInformation ugi)

Returns the QuotaState associated to the specified user.

参数:

ugi - the user

返回:

the quota info associated to specified user

getTableLimiter

public QuotaLimiter getTableLimiter(TableName table)

Returns the limiter associated to the specified table.

参数:

table - the table to limit

返回:

the limiter associated to the specified table

getNamespaceLimiter

public QuotaLimiter getNamespaceLimiter(String namespace)

Returns the limiter associated to the specified namespace.

参数:

namespace - the namespace to limit

返回:

the limiter associated to the specified namespace