When an exception is thrown on the java server during oneway function processing, it appears to send a message back to the client. The java client disregards the incoming recv_ call from the server. The tornado bindings should do the same thing.
Without this patch, the incoming response from the server hits the getattr() and it crashes because the function does not exist. With this patch, it gets discarded correctly, as there isn't a future registered by oneway functions.