나는 자정에 매일 작업을 실행하는 Grails 애플리케이션을 가지고있다. grails와 gpar로 엄청난 양의 데이터 처리하기
package threading
import static grails.async.Promises.task
import static groovyx.gpars.GParsExecutorsPool.withPool
class ComplexJob {
static triggers = {
simple repeatInterval: 30 * 1000l
}
def execute() {
if (Person.count == 5000) {
println "Executing job"
withPool 10000, {
Person.listOrderByAge(order: "asc").each { p ->
task {
log.info "Started ${p}"
Thread.sleep(15000l - (-1 * p.age))
}.onComplete {
log.info "Completed ${p}"
}
}
}
}
}
}
이 같은
repeatInterval
테스트 목적만을위한 것입니다 무시 : 내 예를 들어, 응용 프로그램에서 나는 석영 작업에서 다음 만 개
Person
기록을 가지고 않습니다. 작업이 나는 다음과 같은 예외를 얻을 실행됩니다 경우 :
2014-11-14 16:11:51,880 quartzScheduler_Worker-3 grails.plugins.quartz.listeners.ExceptionPrinterJobListener - Exception occurred in job: Grails Job
org.quartz.JobExecutionException: java.lang.IllegalStateException: The thread pool executor cannot run the task. The upper limit of the thread pool size has probably been reached. Current pool size: 1000 Maximum pool size: 1000 [See nested exception: java.lang.IllegalStateException: The thread pool executor cannot run the task. The upper limit of the thread pool size has probably been reached. Current pool size: 1000 Maximum pool size: 1000]
at grails.plugins.quartz.GrailsJobFactory$GrailsJob.execute(GrailsJobFactory.java:111)
at org.quartz.core.JobRunShell.run(JobRunShell.java:202)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573)
Caused by: java.lang.IllegalStateException: The thread pool executor cannot run the task. The upper limit of the thread pool size has probably been reached. Current pool size: 1000 Maximum pool size: 1000
at org.grails.async.factory.gpars.LoggingPoolFactory$3.rejectedExecution(LoggingPoolFactory.groovy:100)
at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:821)
at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1372)
at groovyx.gpars.scheduler.DefaultPool.execute(DefaultPool.java:155)
at groovyx.gpars.group.PGroup.task(PGroup.java:305)
at groovyx.gpars.group.PGroup.task(PGroup.java:286)
at groovyx.gpars.dataflow.Dataflow.task(Dataflow.java:93)
at org.grails.async.factory.gpars.GparsPromise.<init>(GparsPromise.groovy:41)
at org.grails.async.factory.gpars.GparsPromiseFactory.createPromise(GparsPromiseFactory.groovy:68)
at grails.async.Promises.task(Promises.java:123)
at threading.ComplexJob$_execute_closure1_closure3.doCall(ComplexJob.groovy:20)
at threading.ComplexJob$_execute_closure1.doCall(ComplexJob.groovy:19)
at groovyx.gpars.GParsExecutorsPool$_withExistingPool_closure2.doCall(GParsExecutorsPool.groovy:192)
at groovyx.gpars.GParsExecutorsPool.withExistingPool(GParsExecutorsPool.groovy:191)
at groovyx.gpars.GParsExecutorsPool.withPool(GParsExecutorsPool.groovy:162)
at groovyx.gpars.GParsExecutorsPool.withPool(GParsExecutorsPool.groovy:136)
at threading.ComplexJob.execute(ComplexJob.groovy:18)
at grails.plugins.quartz.GrailsJobFactory$GrailsJob.execute(GrailsJobFactory.java:104)
... 2 more
2014-11-14 16:12:06,756 Actor Thread 20 org.grails.async.factory.gpars.LoggingPoolFactory - Async execution error: A DataflowVariable can only be assigned once. Only re-assignments to an equal value are allowed.
java.lang.IllegalStateException: A DataflowVariable can only be assigned once. Only re-assignments to an equal value are allowed.
at groovyx.gpars.dataflow.expression.DataflowExpression.bind(DataflowExpression.java:368)
at groovyx.gpars.group.PGroup$4.run(PGroup.java:315)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
2014-11-14 16:12:06,756 Actor Thread 5 org.grails.async.factory.gpars.LoggingPoolFactory - Async execution error: A DataflowVariable can only be assigned once. Only re-assignments to an equal value are allowed.
java.lang.IllegalStateException: A DataflowVariable can only be assigned once. Only re-assignments to an equal value are allowed.
at groovyx.gpars.dataflow.expression.DataflowExpression.bind(DataflowExpression.java:368)
at groovyx.gpars.group.PGroup$4.run(PGroup.java:315)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
내가 아마이 계산을 할 수 withPool(10000)
를 사용하는 동안 스레드 풀은 10000로 설정되어 있지 않은 것처럼 보인다 (이제 인쇄 문을 로그를) 청크? 그렇다면 어떻게 최신 항목이 처리되었는지 (예 : 계속할 위치)를 알 수 있습니까?
작은 풀 (예외가 표시되면 1000)을 사용하지 않는 이유는 무엇입니까? 작업을 수행하는 데 10000 개의 스레드를 만드는 것이 순차적으로 수행하는 것보다 빠르지는 않습니다. –
Grails 앱에서 Spring 배치와 같이 일괄 처리를 위해 실제로 설계된 것을 사용하지 않는 이유는 무엇입니까? 그것이 내가하는 일이며, 잘 작동합니다. –
풀 크기가 클수록 처리 속도가 빠릅니다. 얼마 전 나는 100 개의 쓰레드를 사용했고 실제로 JVM 효율성에 큰 문제를 야기했습니다. 시행 착오 끝에 15 개의 쓰레드만으로 충분했다. – Opal