org.apache.hadoop.hbase.ipc

类 SimpleRpcScheduler

java.lang.Object

org.apache.hadoop.hbase.ipc.RpcScheduler

org.apache.hadoop.hbase.ipc.SimpleRpcScheduler

所有已实现的接口:

ConfigurationObserver

@InterfaceAudience.LimitedPrivate(value={"Coprocesssor","Phoenix"})
@InterfaceStability.Evolving
public class SimpleRpcScheduler
extends RpcScheduler
implements ConfigurationObserver

The default scheduler. Configurable. Maintains isolated handler pools for general ('default'), high-priority ('priority'), and replication ('replication') requests. Default behavior is to balance the requests across handlers. Add configs to enable balancing by read vs writes, etc. See below article for explanation of options.

另请参阅:

Overview on Request Queuing

嵌套类概要

从类继承的嵌套类/接口 org.apache.hadoop.hbase.ipc.RpcScheduler

RpcScheduler.Context

字段概要

从类继承的字段 org.apache.hadoop.hbase.ipc.RpcScheduler

IPC_SERVER_MAX_CALLQUEUE_LENGTH, IPC_SERVER_PRIORITY_MAX_CALLQUEUE_LENGTH

构造器概要

构造器

构造器和说明
SimpleRpcScheduler(org.apache.hadoop.conf.Configuration conf, int handlerCount, int priorityHandlerCount, int replicationHandlerCount, PriorityFunction priority, Abortable server, int highPriorityLevel)
SimpleRpcScheduler(org.apache.hadoop.conf.Configuration conf, int handlerCount, int priorityHandlerCount, int replicationHandlerCount, PriorityFunction priority, int highPriorityLevel)

方法概要

方法

限定符和类型	方法和说明
boolean	dispatch(CallRunner callTask) Dispatches an RPC request asynchronously.
int	getActiveReadRpcHandlerCount() Retrieves the number of active write rpc handler when use RWQueueRpcExecutor.
int	getActiveRpcHandlerCount() Retrieves the number of active handler.
int	getActiveScanRpcHandlerCount() Retrieves the number of active write rpc handler when use RWQueueRpcExecutor.
int	getActiveWriteRpcHandlerCount() Retrieves the number of active write rpc handler when use RWQueueRpcExecutor.
int	getGeneralQueueLength() Retrieves length of the general queue for metrics.
long	getNumGeneralCallsDropped() If CoDel-based RPC executors are used, retrieves the number of Calls that were dropped from general queue because RPC executor is under high load; returns 0 otherwise.
long	getNumLifoModeSwitches() If CoDel-based RPC executors are used, retrieves the number of Calls that were picked from the tail of the queue (indicating adaptive LIFO mode, when in the period of overloade we serve last requests first); returns 0 otherwise.
int	getPriorityQueueLength() Retrieves length of the priority queue for metrics.
int	getReadQueueLength() Retrieves length of the read queue for metrics when use RWQueueRpcExecutor.
int	getReplicationQueueLength() Retrieves length of the replication queue for metrics.
int	getScanQueueLength() Retrieves length of the scan queue for metrics when use RWQueueRpcExecutor.
int	getWriteQueueLength() Retrieves length of the write queue for metrics when use RWQueueRpcExecutor.
void	init(RpcScheduler.Context context) Does some quick initialization.
void	onConfigurationChange(org.apache.hadoop.conf.Configuration conf) This method would be called by the ConfigurationManager object when the Configuration object is reloaded from disk.
void	start() Prepares for request serving.
void	stop() Stops serving new requests.

从类继承的方法 java.lang.Object

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

构造器详细资料

SimpleRpcScheduler

public SimpleRpcScheduler(org.apache.hadoop.conf.Configuration conf,
                  int handlerCount,
                  int priorityHandlerCount,
                  int replicationHandlerCount,
                  PriorityFunction priority,
                  Abortable server,
                  int highPriorityLevel)

参数:

conf -

handlerCount - the number of handler threads that will be used to process calls

priorityHandlerCount - How many threads for priority handling.

replicationHandlerCount - How many threads for replication handling.

highPriorityLevel -

priority - Function to extract request priority.

SimpleRpcScheduler

public SimpleRpcScheduler(org.apache.hadoop.conf.Configuration conf,
                  int handlerCount,
                  int priorityHandlerCount,
                  int replicationHandlerCount,
                  PriorityFunction priority,
                  int highPriorityLevel)

方法详细资料

init

public void init(RpcScheduler.Context context)

从类复制的说明: RpcScheduler

Does some quick initialization. Heavy tasks (e.g. starting threads) should be done in RpcScheduler.start(). This method is called before start.

指定者:

init 在类中 RpcScheduler

参数:

context - provides methods to retrieve runtime information from

start

public void start()

从类复制的说明: RpcScheduler

Prepares for request serving. An implementation may start some handler threads here.

指定者:

start 在类中 RpcScheduler

stop

public void stop()

从类复制的说明: RpcScheduler

Stops serving new requests.

指定者:

stop 在类中 RpcScheduler

dispatch

public boolean dispatch(CallRunner callTask)
                 throws InterruptedException

从类复制的说明: RpcScheduler

Dispatches an RPC request asynchronously. An implementation is free to choose to process the request immediately or delay it for later processing.

指定者:

dispatch 在类中 RpcScheduler

参数:

callTask - the request to be dispatched

抛出:

InterruptedException

onConfigurationChange

public void onConfigurationChange(org.apache.hadoop.conf.Configuration conf)

从接口复制的说明: ConfigurationObserver

This method would be called by the ConfigurationManager object when the Configuration object is reloaded from disk.

指定者:

onConfigurationChange 在接口中 ConfigurationObserver

getGeneralQueueLength

public int getGeneralQueueLength()

从类复制的说明: RpcScheduler

Retrieves length of the general queue for metrics.

指定者:

getGeneralQueueLength 在类中 RpcScheduler

getPriorityQueueLength

public int getPriorityQueueLength()

从类复制的说明: RpcScheduler

Retrieves length of the priority queue for metrics.

指定者:

getPriorityQueueLength 在类中 RpcScheduler

getReplicationQueueLength

public int getReplicationQueueLength()

从类复制的说明: RpcScheduler

Retrieves length of the replication queue for metrics.

指定者:

getReplicationQueueLength 在类中 RpcScheduler

getActiveRpcHandlerCount

public int getActiveRpcHandlerCount()

从类复制的说明: RpcScheduler

Retrieves the number of active handler.

指定者:

getActiveRpcHandlerCount 在类中 RpcScheduler

getNumGeneralCallsDropped

public long getNumGeneralCallsDropped()

从类复制的说明: RpcScheduler

If CoDel-based RPC executors are used, retrieves the number of Calls that were dropped from general queue because RPC executor is under high load; returns 0 otherwise.

指定者:

getNumGeneralCallsDropped 在类中 RpcScheduler

getNumLifoModeSwitches

public long getNumLifoModeSwitches()

从类复制的说明: RpcScheduler

If CoDel-based RPC executors are used, retrieves the number of Calls that were picked from the tail of the queue (indicating adaptive LIFO mode, when in the period of overloade we serve last requests first); returns 0 otherwise.

指定者:

getNumLifoModeSwitches 在类中 RpcScheduler

getWriteQueueLength

public int getWriteQueueLength()

从类复制的说明: RpcScheduler

Retrieves length of the write queue for metrics when use RWQueueRpcExecutor.

指定者:

getWriteQueueLength 在类中 RpcScheduler

getReadQueueLength

public int getReadQueueLength()

从类复制的说明: RpcScheduler

Retrieves length of the read queue for metrics when use RWQueueRpcExecutor.

指定者:

getReadQueueLength 在类中 RpcScheduler

getScanQueueLength

public int getScanQueueLength()

从类复制的说明: RpcScheduler

Retrieves length of the scan queue for metrics when use RWQueueRpcExecutor.

指定者:

getScanQueueLength 在类中 RpcScheduler

getActiveWriteRpcHandlerCount

public int getActiveWriteRpcHandlerCount()

从类复制的说明: RpcScheduler

Retrieves the number of active write rpc handler when use RWQueueRpcExecutor.

指定者:

getActiveWriteRpcHandlerCount 在类中 RpcScheduler

getActiveReadRpcHandlerCount

public int getActiveReadRpcHandlerCount()

从类复制的说明: RpcScheduler

Retrieves the number of active write rpc handler when use RWQueueRpcExecutor.

指定者:

getActiveReadRpcHandlerCount 在类中 RpcScheduler

getActiveScanRpcHandlerCount

public int getActiveScanRpcHandlerCount()

从类复制的说明: RpcScheduler

Retrieves the number of active write rpc handler when use RWQueueRpcExecutor.

指定者:

getActiveScanRpcHandlerCount 在类中 RpcScheduler