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关闭不优雅 #16

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@LongLongATime

ThreadPoolImpl.destroy调用的是ThreadPoolExecutor.shutdown方法,该方法会把线程池状态设置为SHUTDOWN,不会接收新任务,并中断线程池里空闲的线程(中断信号并不代表线程会停止,需要线程监听中断信号)。但不会阻塞等待线程池队列里的任务执行完成,这会导致队列中的任务丢弃。可以参考Spring的ThreadPoolTaskExecutor.shutdown方法,在ThreadPoolExecutor.shutdown后,执行ThreadPoolExecutor.awaitTermination等待队列中的任务完成后才停止应用。

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