Module org.elasticsearch.server

Package org.elasticsearch.common.util.concurrent

Class TaskExecutionTimeTrackingEsThreadPoolExecutor

java.lang.Object

java.util.concurrent.AbstractExecutorService

java.util.concurrent.ThreadPoolExecutor

org.elasticsearch.common.util.concurrent.EsThreadPoolExecutor

org.elasticsearch.common.util.concurrent.TaskExecutionTimeTrackingEsThreadPoolExecutor

All Implemented Interfaces:

Executor, ExecutorService

public final class TaskExecutionTimeTrackingEsThreadPoolExecutor
extends EsThreadPoolExecutor

An extension to thread pool executor, which tracks statistics for the task execution time.

Nested Class Summary

Nested classes/interfaces inherited from class java.util.concurrent.ThreadPoolExecutor

ThreadPoolExecutor.AbortPolicy, ThreadPoolExecutor.CallerRunsPolicy, ThreadPoolExecutor.DiscardOldestPolicy, ThreadPoolExecutor.DiscardPolicy

Method Summary

Modifier and Type	Method	Description
protected void	afterExecute(Runnable r, Throwable t)
protected void	appendThreadPoolExecutorDetails(StringBuilder sb)	Append details about this thread pool to the specified StringBuilder.
protected void	beforeExecute(Thread t, Runnable r)
int	getCurrentQueueSize()	Returns the current queue size (operations that are queued)
Map<Runnable,Long>	getOngoingTasks()	Returns the set of currently running tasks and their start timestamp.
double	getTaskExecutionEWMA()	Returns the exponentially weighted moving average of the task execution time
long	getTotalTaskExecutionTime()	Returns the total time (in nanoseconds) spend executing tasks in this executor.
protected Runnable	unwrap(Runnable runnable)
protected Runnable	wrapRunnable(Runnable command)

Methods inherited from class org.elasticsearch.common.util.concurrent.EsThreadPoolExecutor

execute, getTasks, toString

Methods inherited from class java.util.concurrent.ThreadPoolExecutor

allowCoreThreadTimeOut, allowsCoreThreadTimeOut, awaitTermination, finalize, getActiveCount, getCompletedTaskCount, getCorePoolSize, getKeepAliveTime, getLargestPoolSize, getMaximumPoolSize, getPoolSize, getQueue, getRejectedExecutionHandler, getTaskCount, getThreadFactory, isShutdown, isTerminated, isTerminating, prestartAllCoreThreads, prestartCoreThread, purge, remove, setCorePoolSize, setKeepAliveTime, setMaximumPoolSize, setRejectedExecutionHandler, setThreadFactory, shutdown, shutdownNow, terminated

Methods inherited from class java.util.concurrent.AbstractExecutorService

invokeAll, invokeAll, invokeAny, invokeAny, newTaskFor, newTaskFor, submit, submit, submit

Methods inherited from class java.lang.Object

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

Method Details

wrapRunnable

protected Runnable wrapRunnable(Runnable command)

Overrides:

wrapRunnable in class EsThreadPoolExecutor

unwrap

protected Runnable unwrap(Runnable runnable)

Overrides:

unwrap in class EsThreadPoolExecutor

getTaskExecutionEWMA

public double getTaskExecutionEWMA()

Returns the exponentially weighted moving average of the task execution time

getTotalTaskExecutionTime

public long getTotalTaskExecutionTime()

Returns the total time (in nanoseconds) spend executing tasks in this executor.

getCurrentQueueSize

public int getCurrentQueueSize()

Returns the current queue size (operations that are queued)

beforeExecute

protected void beforeExecute(Thread t,
 Runnable r)

Overrides:

beforeExecute in class ThreadPoolExecutor

afterExecute

protected void afterExecute(Runnable r,
 Throwable t)

Overrides:

afterExecute in class EsThreadPoolExecutor

appendThreadPoolExecutorDetails

protected void appendThreadPoolExecutorDetails(StringBuilder sb)

Description copied from class: EsThreadPoolExecutor

Append details about this thread pool to the specified StringBuilder. All details should be appended as key/value pairs in the form "%s = %s, "

Overrides:

appendThreadPoolExecutorDetails in class EsThreadPoolExecutor

Parameters:

sb - the StringBuilder to append to

getOngoingTasks

public Map<Runnable,Long> getOngoingTasks()

Returns the set of currently running tasks and their start timestamp.

Note that it is possible for a task that has just finished execution to be temporarily both in the returned map, and its total execution time to be included in the return value of getTotalTaskExecutionTime(). However, it is guaranteed that the task is reflected in at least one of those two values.