timeout behaviour when computation fails

[nimatrueway]

timeout(1.second) {
  throw new Throwable("failed computation")
}

Currently, timeout is implemented using race which results in a behaviour where in the face of computation failure the block still waits until the timeout timer kicks in and the block fails with a timeout exception.

// currently: throws after 1 second
TimeoutException(s"Timed out after 1 second")

I believe though, the typical expectation of timeout is to quickly fail the block with the same exception as the failed computation throws and do not wait for the timeout timer to trigger.

// expected: immediately throw
Throwable("failed computation")

I'm pretty confident that we are aligned on this, so I'll prepare a small PR

[adamw]

Of course, you are right - thank you :)