Is it assumed that CompositeException is eligible to modify the cause of exceptions passed in constructor of CompositeException? · Issue #6747 · ReactiveX/RxJava (original) (raw)

Since RxJava modifies exceptions during call of getCause method of CompositeException instance and connect these exceptions in chains we have finally millions of exceptions and quickly getting out of memory.

    @Test
    public void compositeExceptionIssue() {
        Single
            .just(new Throwable("ROOT ERROR"))
            .flatMapCompletable(rootError -> Observable
                .range(1, 10)
                .flatMapCompletable(testNumber -> Completable
                    .mergeArrayDelayError(
                        Completable.error(new RuntimeException("Test#" + testNumber + "A", rootError)),
                        Completable.error(new RuntimeException("Test#" + testNumber + "B", rootError))
                    )
                    .doOnError(Throwable::getCause)
                    .onErrorComplete()
                )
                .doOnComplete(() -> {
                    rootError.printStackTrace();
                })
            )
            .blockingAwait();
    }

This simple test demonstrates that cause of rootError throwable is changed.