InterruptedException 没有在 RxJava onError 回调中捕获？

Question

下面我有一个简单的代码

    compositeDisposable.add(Observable.create<Int> { Thread.sleep(1000) }
        .subscribeOn(Schedulers.io())
        .observeOn(AndroidSchedulers.mainThread())
        .subscribe({}, {Log.d("Track", it.localizedMessage)}, {}))
    Handler().postDelayed({compositeDisposable.clear()}, 100)

故意使用Thread.sleep(1000)，就是为了触发InterruptedException。我故意延迟 100 毫秒，以确保链中的睡眠已经开始，并将其处理掉。

（注意，我知道使用 Thread.sleep 不是首选。我只是编写这段代码来测试和理解为什么 onError 在这种情况下没有被调用，以及如何防止无需在 RxJava 链中使用 try-catch 即可优雅地崩溃）

当时，当它被触发时，错误不是 onError 的原因（即没有达到 Log。而是抛出以下错误并使应用程序崩溃。

io.reactivex.exceptions.UndeliverableException: java.lang.InterruptedException
    at io.reactivex.plugins.RxJavaPlugins.onError(RxJavaPlugins.java:366)
    at io.reactivex.internal.operators.observable.ObservableCreate$CreateEmitter.onError(ObservableCreate.java:74)
    at io.reactivex.internal.operators.observable.ObservableCreate.subscribeActual(ObservableCreate.java:43)
    at io.reactivex.Observable.subscribe(Observable.java:11194)
    at io.reactivex.internal.operators.observable.ObservableSubscribeOn$SubscribeTask.run(ObservableSubscribeOn.java:96)
    at io.reactivex.Scheduler$DisposeTask.run(Scheduler.java:463)
    at io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:66)
    at io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:57)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:301)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
    at java.lang.Thread.run(Thread.java:764)
 Caused by: java.lang.InterruptedException
    at java.lang.Thread.sleep(Native Method)
    at java.lang.Thread.sleep(Thread.java:373)
    at java.lang.Thread.sleep(Thread.java:314)
    at com.elyeproj.porterduff.AnimateDrawPorterDuffView$startAnimate.subscribe(AnimateDrawPorterDuffView.kt:45)
    at io.reactivex.internal.operators.observable.ObservableCreate.subscribeActual(ObservableCreate.java:40)
    at io.reactivex.Observable.subscribe(Observable.java:11194) 
    at io.reactivex.internal.operators.observable.ObservableSubscribeOn$SubscribeTask.run(ObservableSubscribeOn.java:96) 
    at io.reactivex.Scheduler$DisposeTask.run(Scheduler.java:463) 
    at io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:66) 
    at io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:57) 
    at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:301) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641) 
    at java.lang.Thread.run(Thread.java:764)

为什么 InterruptedException 没有被 RxJava 中的 onError 捕获？

Answer 1

正如@akarnokd 所指出的，在https://github.com/ReactiveX/RxJava/wiki/What's-different-in-2.0#error-handling 中，看起来 RxJava 在抛出之前已经被处理掉了，因此后来抛出的错误得到了解决。要解决这个问题只需要注册

 RxJavaPlugins.setErrorHandler { e -> /*Do whatever we need with the error*/ }

InterruptedException 没有在 RxJava onError 回调中捕获？

InterruptedException not caught on RxJava onError callback?

java

exception

kotlin

rx-java2

thread-sleep