org.apache.hadoop.hbase.quotas

类 DefaultOperationQuota

java.lang.Object

org.apache.hadoop.hbase.quotas.DefaultOperationQuota

所有已实现的接口:

OperationQuota

直接已知子类:

ExceedOperationQuota

@InterfaceAudience.Private
 @InterfaceStability.Evolving
public class DefaultOperationQuota
extends Object
implements OperationQuota

嵌套类概要

从接口继承的嵌套类/接口 org.apache.hadoop.hbase.quotas.OperationQuota

OperationQuota.OperationType

字段概要

字段

限定符和类型	字段和说明
protected List<QuotaLimiter>	limiters
protected long	readAvailable
protected long	readCapacityUnitConsumed
protected long	readCapacityUnitDiff
protected long	readConsumed
protected long	readDiff
protected long	writeAvailable
protected long	writeCapacityUnitConsumed
protected long	writeCapacityUnitDiff
protected long	writeConsumed
protected long	writeDiff

构造器概要

构造器

构造器和说明
DefaultOperationQuota(org.apache.hadoop.conf.Configuration conf, List<QuotaLimiter> limiters) NOTE: The order matters.
DefaultOperationQuota(org.apache.hadoop.conf.Configuration conf, QuotaLimiter... limiters)

方法概要

限定符和类型	方法和说明
void	addGetResult(Result result) Add a get result.
void	addMutation(Mutation mutation) Add a mutation result.
void	addScanResult(List<Result> results) Add a scan result.
void	checkQuota(int numWrites, int numReads, int numScans) Checks if it is possible to execute the specified operation.
void	close() Cleanup method on operation completion
long	getReadAvailable()
long	getWriteAvailable()
protected void	updateEstimateConsumeQuota(int numWrites, int numReads, int numScans) Update estimate quota(read/write size/capacityUnits) which will be consumed

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

limiters

protected final List<QuotaLimiter> limiters

writeAvailable

protected long writeAvailable

readAvailable

protected long readAvailable

writeConsumed

protected long writeConsumed

readConsumed

protected long readConsumed

writeCapacityUnitConsumed

protected long writeCapacityUnitConsumed

readCapacityUnitConsumed

protected long readCapacityUnitConsumed

writeDiff

protected long writeDiff

readDiff

protected long readDiff

writeCapacityUnitDiff

protected long writeCapacityUnitDiff

readCapacityUnitDiff

protected long readCapacityUnitDiff

构造器详细资料

DefaultOperationQuota

public DefaultOperationQuota(org.apache.hadoop.conf.Configuration conf,
                             QuotaLimiter... limiters)

DefaultOperationQuota

public DefaultOperationQuota(org.apache.hadoop.conf.Configuration conf,
                             List<QuotaLimiter> limiters)

NOTE: The order matters. It should be something like [user, table, namespace, global]

方法详细资料

checkQuota

public void checkQuota(int numWrites,
                       int numReads,
                       int numScans)
                throws RpcThrottlingException

从接口复制的说明: OperationQuota

Checks if it is possible to execute the specified operation. The quota will be estimated based on the number of operations to perform and the average size accumulated during time.

指定者:

checkQuota 在接口中 OperationQuota

参数:

numWrites - number of write operation that will be performed

numReads - number of small-read operation that will be performed

numScans - number of long-read operation that will be performed

抛出:

RpcThrottlingException - if the operation cannot be performed because RPC quota is exceeded.

close

public void close()

从接口复制的说明: OperationQuota

Cleanup method on operation completion

指定者:

close 在接口中 OperationQuota

getReadAvailable

public long getReadAvailable()

指定者:

getReadAvailable 在接口中 OperationQuota

返回:

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

getWriteAvailable

public long getWriteAvailable()

指定者:

getWriteAvailable 在接口中 OperationQuota

返回:

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

addGetResult

public void addGetResult(Result result)

从接口复制的说明: OperationQuota

Add a get result. This will be used to calculate the exact quota and have a better short-read average size for the next time.

指定者:

addGetResult 在接口中 OperationQuota

addScanResult

public void addScanResult(List<Result> results)

从接口复制的说明: OperationQuota

Add a scan result. This will be used to calculate the exact quota and have a better long-read average size for the next time.

指定者:

addScanResult 在接口中 OperationQuota

addMutation

public void addMutation(Mutation mutation)

从接口复制的说明: OperationQuota

Add a mutation result. This will be used to calculate the exact quota and have a better mutation average size for the next time.

指定者:

addMutation 在接口中 OperationQuota

updateEstimateConsumeQuota

protected void updateEstimateConsumeQuota(int numWrites,
                                          int numReads,
                                          int numScans)

Update estimate quota(read/write size/capacityUnits) which will be consumed

参数:

numWrites - the number of write requests

numReads - the number of read requests

numScans - the number of scan requests