线程池异常：.RejectedExecutionException
0
悬赏园豆：100
[已解决问题]
解决于 2019-11-26 09:58
如下所示，线程已经没有任务了，一直出现该异常；求解。
spring.thread.pool.corePoolSize=10
spring.thread.pool.maxPoolSize=100
spring.thread.pool.keepAliveSeconds=300
spring.thread.pool.queueCapacity=200
spring.thread.pool.threadNamePrefix=AbilityExecutor
问题定位到这一行： 其中，mod = 4
for(int i=0;i<mod;i++) {
calls.add(new TicketArchiveCallable(idleSleep,
pooltimeout,topic+String.valueOf(i),props,ticketTransferService,cacheCapCodeService,rzLines,serilNumbePath));
}
CompletionService<Boolean> completionService=null;
try {
completionService = new ExecutorCompletionService<Boolean>(
executorService);
List<Future<Boolean>> futures=new ArrayList();
for (int i = 0; i < calls.size(); i++) {
//异常提示在这一行
futures.add(completionService.submit(calls.get(i)));
}
java.util.concurrent.RejectedExecutionException: Task java.util.concurrent.ExecutorCompletionService$QueueingFuture@47a627cc rejected from java.util.concurrent.ThreadPoolExecutor@5acbef42[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 4]
at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2063) ~[?:1.8.0_144]
at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:830) ~[?:1.8.0_144]
at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1379) ~[?:1.8.0_144]
at java.util.concurrent.ExecutorCompletionService.submit(ExecutorCompletionService.java:181) ~[?:1.8.0_144]
at com.aspire.ability.file.job.NewTicketArchiveJob.run(NewTicketArchiveJob.java:150) [Ability-Work-1.0.1-OnLine-File.jar:1.0.1-OnLine]
at sun.reflect.GeneratedMethodAccessor261.invoke(Unknown Source) ~[?:?]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_144]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_144]
at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:65) [spring-context-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) [spring-context-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_144]
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [?:1.8.0_144]
最佳答案
0
AbortPolicy是线程池默认的拒绝策略，当你的线程跑满，并且等待队列也满了以后，再执行任务，就会报错，抛弃掉新增的任务
你的线程池最大是100，队列是200，所以你任务跑多了，就会报错
收获园豆：100
谢谢解答，但是 mod=4 ，每分钟启动一次，每次启动4条线程； 而且线程都没有任务执行（因为处理线程没有满足需要处理任务的条件）
List<Callable<Boolean>> calls=new ArrayList();
for(int i=0;i<mod;i++) {
calls.add(new TicketArchiveCallable(idleSleep,
pooltimeout,topic+String.valueOf(i),props,ticketTransferService,cacheCapCodeService,rzLines,serilNumbePath));
}@南小鸟: 肯定还是拒绝问题，你可以DEBUG跟到AbortPolicy里看一下，你的线程池是什么情况，或者用Jconsole看一下，另外使用线程池的话，最好重写ThreadFactory，给线程一个明确的名字，这样排查问题会方便一点
@杨宇的爸爸: 好的谢谢。
