ScheduledThreadPoolExecutor with corePoolSize = 0 causes 100% load on one CPU core

Question

Given is the following configuration of a ScheduledThreadPoolExecutor that runs a simple task every five seconds:

int corePoolSize = 0;
ScheduledExecutorServ         


        

Answer 1

It looks like you have hit JDK-8129861 that has been fixed in Java 9. It may also be related to JDK-8022642.