org.apache.hadoop.hbase.quotas

类 TimeBasedLimiter

java.lang.Object

org.apache.hadoop.hbase.quotas.TimeBasedLimiter

所有已实现的接口:

QuotaLimiter

@InterfaceAudience.Private
 @InterfaceStability.Evolving
public class TimeBasedLimiter
extends Object
implements QuotaLimiter

Simple time based limiter that checks the quota Throttle

方法概要

限定符和类型	方法和说明
void	checkQuota(long writeReqs, long estimateWriteSize, long readReqs, long estimateReadSize, long estimateWriteCapacityUnit, long estimateReadCapacityUnit) Checks if it is possible to execute the specified operation.
void	consumeRead(long size, long capacityUnit) Removes or add back some read amount to the quota.
void	consumeWrite(long size, long capacityUnit) Removes or add back some write amount to the quota.
long	getReadAvailable()
long	getWriteAvailable()
void	grabQuota(long writeReqs, long writeSize, long readReqs, long readSize, long writeCapacityUnit, long readCapacityUnit) Removes the specified write and read amount from the quota.
boolean	isBypass()
String	toString()
void	update(TimeBasedLimiter other)

从类继承的方法 java.lang.Object

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

方法详细资料

update

public void update(TimeBasedLimiter other)

checkQuota

public void checkQuota(long writeReqs,
                       long estimateWriteSize,
                       long readReqs,
                       long estimateReadSize,
                       long estimateWriteCapacityUnit,
                       long estimateReadCapacityUnit)
                throws RpcThrottlingException

从接口复制的说明: QuotaLimiter

Checks if it is possible to execute the specified operation.

指定者:

checkQuota 在接口中 QuotaLimiter

参数:

writeReqs - the write requests that will be checked against the available quota

estimateWriteSize - the write size that will be checked against the available quota

readReqs - the read requests that will be checked against the available quota

estimateReadSize - the read size that will be checked against the available quota

estimateWriteCapacityUnit - the write capacity unit that will be checked against the available quota

estimateReadCapacityUnit - the read capacity unit that will be checked against the available quota

抛出:

RpcThrottlingException - thrown if not enough available resources to perform operation.

grabQuota

public void grabQuota(long writeReqs,
                      long writeSize,
                      long readReqs,
                      long readSize,
                      long writeCapacityUnit,
                      long readCapacityUnit)

从接口复制的说明: QuotaLimiter

Removes the specified write and read amount from the quota. At this point the write and read amount will be an estimate, that will be later adjusted with a consumeWrite()/consumeRead() call.

指定者:

grabQuota 在接口中 QuotaLimiter

参数:

writeReqs - the write requests that will be removed from the current quota

writeSize - the write size that will be removed from the current quota

readReqs - the read requests that will be removed from the current quota

readSize - the read size that will be removed from the current quota

writeCapacityUnit - the write capacity unit that will be removed from the current quota

readCapacityUnit - the read capacity unit num that will be removed from the current quota

consumeWrite

public void consumeWrite(long size,
                         long capacityUnit)

从接口复制的说明: QuotaLimiter

Removes or add back some write amount to the quota. (called at the end of an operation in case the estimate quota was off)

指定者:

consumeWrite 在接口中 QuotaLimiter

consumeRead

public void consumeRead(long size,
                        long capacityUnit)

从接口复制的说明: QuotaLimiter

Removes or add back some read amount to the quota. (called at the end of an operation in case the estimate quota was off)

指定者:

consumeRead 在接口中 QuotaLimiter

isBypass

public boolean isBypass()

指定者:

isBypass 在接口中 QuotaLimiter

返回:

true if the limiter is a noop

getWriteAvailable

public long getWriteAvailable()

指定者:

getWriteAvailable 在接口中 QuotaLimiter

返回:

the number of bytes available to write to avoid exceeding the quota

getReadAvailable

public long getReadAvailable()

指定者:

getReadAvailable 在接口中 QuotaLimiter

返回:

the number of bytes available to read to avoid exceeding the quota

toString

public String toString()

覆盖:

toString 在类中 Object