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LazyTraceThreadPoolTaskScheduler.getScheduledThreadPoolExecutor() cause associated ScheduledThreadPoolExecutor shutdown #1485

ScheduledThreadPoolExecutor executor = this.delegate.getScheduledThreadPoolExecutor(); Nonetheless this: When LazyTraceScheduledThreadPoolExecutor instance is no longer to use, finalize () method will ...
GitHub

AbstractScheduledService.Scheduler.newFixedDelaySchedule & AbstractScheduledService.Scheduler.newFixedRateSchedule should fail fast

Creating a Scheduler using the two existing factory methods doesn't fail fast as I've had this example of stack trace where I was extremely surprised to see none of my classes.