org.apache.hadoop.hbase.ipc

类 FastPathBalancedQueueRpcExecutor

java.lang.Object

org.apache.hadoop.hbase.ipc.RpcExecutor

org.apache.hadoop.hbase.ipc.BalancedQueueRpcExecutor

org.apache.hadoop.hbase.ipc.FastPathBalancedQueueRpcExecutor

@InterfaceAudience.Private
public class FastPathBalancedQueueRpcExecutor
extends BalancedQueueRpcExecutor

Balanced queue executor with a fastpath. Because this is FIFO, it has no respect for ordering so a fast path skipping the queuing of Calls if an Handler is available, is possible. Just pass the Call direct to waiting Handler thread. Try to keep the hot Handlers bubbling rather than let them go cold and lose context. Idea taken from Apace Kudu (incubating). See https://gerrit.cloudera.org/#/c/2938/7/src/kudu/rpc/service_queue.h

嵌套类概要

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

RpcExecutor.Handler, RpcExecutor.QueueBalancer

字段概要

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

CALL_QUEUE_CODEL_DEFAULT_INTERVAL, CALL_QUEUE_CODEL_DEFAULT_LIFO_THRESHOLD, CALL_QUEUE_CODEL_DEFAULT_TARGET_DELAY, CALL_QUEUE_CODEL_INTERVAL, CALL_QUEUE_CODEL_LIFO_THRESHOLD, CALL_QUEUE_CODEL_TARGET_DELAY, CALL_QUEUE_HANDLER_FACTOR_CONF_KEY, CALL_QUEUE_TYPE_CODEL_CONF_VALUE, CALL_QUEUE_TYPE_CONF_DEFAULT, CALL_QUEUE_TYPE_CONF_KEY, CALL_QUEUE_TYPE_DEADLINE_CONF_VALUE, CALL_QUEUE_TYPE_FIFO_CONF_VALUE, currentQueueLimit, DEFAULT_CALL_QUEUE_SIZE_HARD_LIMIT, numCallQueues, QUEUE_MAX_CALL_DELAY_CONF_KEY, queues

构造器概要

构造器

构造器和说明
FastPathBalancedQueueRpcExecutor(String name, int handlerCount, int maxQueueLength, PriorityFunction priority, org.apache.hadoop.conf.Configuration conf, Abortable abortable)
FastPathBalancedQueueRpcExecutor(String name, int handlerCount, String callQueueType, int maxQueueLength, PriorityFunction priority, org.apache.hadoop.conf.Configuration conf, Abortable abortable)

方法概要

限定符和类型	方法和说明
boolean	dispatch(CallRunner callTask) Add the request to the executor queue
protected RpcExecutor.Handler	getHandler(String name, double handlerFailureThreshhold, BlockingQueue<CallRunner> q, AtomicInteger activeHandlerCount) Override if providing alternate Handler implementation.

从类继承的方法 org.apache.hadoop.hbase.ipc.RpcExecutor

computeNumCallQueues, getActiveHandlerCount, getActiveReadHandlerCount, getActiveScanHandlerCount, getActiveWriteHandlerCount, getBalancer, getCallQueueCountsSummary, getCallQueueSizeSummary, getName, getNumGeneralCallsDropped, getNumLifoModeSwitches, getQueueLength, getQueues, getReadQueueLength, getScanQueueLength, getWriteQueueLength, initializeQueues, isCodelQueueType, isDeadlineQueueType, isFifoQueueType, onConfigurationChange, resizeQueues, start, startHandlers, startHandlers, stop

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

FastPathBalancedQueueRpcExecutor

public FastPathBalancedQueueRpcExecutor(String name,
                                        int handlerCount,
                                        int maxQueueLength,
                                        PriorityFunction priority,
                                        org.apache.hadoop.conf.Configuration conf,
                                        Abortable abortable)

FastPathBalancedQueueRpcExecutor

public FastPathBalancedQueueRpcExecutor(String name,
                                        int handlerCount,
                                        String callQueueType,
                                        int maxQueueLength,
                                        PriorityFunction priority,
                                        org.apache.hadoop.conf.Configuration conf,
                                        Abortable abortable)

方法详细资料

getHandler

protected RpcExecutor.Handler getHandler(String name,
                                         double handlerFailureThreshhold,
                                         BlockingQueue<CallRunner> q,
                                         AtomicInteger activeHandlerCount)

从类复制的说明: RpcExecutor

Override if providing alternate Handler implementation.

覆盖:

getHandler 在类中 RpcExecutor

dispatch

public boolean dispatch(CallRunner callTask)
                 throws InterruptedException

从类复制的说明: RpcExecutor

Add the request to the executor queue

覆盖:

dispatch 在类中 BalancedQueueRpcExecutor

抛出:

InterruptedException