io.reactivex.exceptions.CompositeException: 3 exceptions occurred.

Test code:

fun main() {
    /*RxJavaPlugins.setErrorHandler {
        it.cause?.let {
            throw it
        }
    }*/

    val obs1 = Observable.create<String> {
        it.onError(Throwable())
    }
    val obs2 = Observable.create<String> {
        it.onError(Throwable())
    }
    val obs3 = Observable.create<String> {
        it.onError(Throwable())
    }
    val obs4 = Observable.create<String> {
        Thread.sleep(1000)
        it.onError(Throwable())
    }.subscribeOn(Schedulers.io())

    val composite = CompositeDisposable()

    val dis = Observable.mergeDelayError(arrayListOf(obs1, obs2, obs3, obs4)).subscribe({
        print(it)
    }, {
        print(it.message)
    })
    composite.add(dis)
    composite.clear()

}

[akarnokd]

Please read https://github.com/ReactiveX/RxJava/wiki/What’s-different-in-2.0#error-handling . Exceptions gathered by mergeDelayError are reported to the global error handler upon disposing the sequence so that errors possibly important to the developer are not lost.

[yanweiqiang]

Again, exceptions gathered by mergeDelayError are reported to the global error handler upon disposing the sequence. Where did you set RxJavaPlugins.setErrorHandler(e -> { });?

I’m very sorry, it’s my fault. I think because my code logic has something wrong. The RxJavaPlugins.setErrorHandler(e -> { }); set after the exception occured. Thank you very much.