# Buggy code
def get_event_iter_returns(self, jid, minions, timeout=None):
    """
    Gather the return data from the event system, break hard when timeout
    is reached.
    """
    log.trace("entered - function get_event_iter_returns()")
    if timeout is None:
        timeout = self.opts["timeout"]

    timeout_at = time.time() + timeout

    found = set()
    # Check to see if the jid is real, if not return the empty dict
    if self.returners["{0}.get_load".format(self.opts["master_job_cache"])](jid) == {}:
        log.warning("jid does not exist")
        yield {}
        # stop the iteration, since the jid is invalid
        raise StopIteration()
    # Wait for the hosts to check in
    while True:
        try:
            raw = self.event.get_event(timeout)
        except tornado.iostream.StreamClosedError:
            if self.auto_reconnect:
                log.warning("Connection to master lost. Reconnecting.")
                self.event.close_pub()
                self.event.connect_pub(timeout=self._get_timeout(timeout))
                continue
            else:
                raise
        if raw is None or time.time() > timeout_at:
            # Timeout reached
            break
        if "minions" in raw.get("data", {}):
            continue
        try:
            found.add(raw["id"])
            ret = {raw["id"]: {"ret": raw["return"]}}
        except KeyError:
            # Ignore other erroneous messages
            continue
        if "out" in raw:
            ret[raw["id"]]["out"] = raw["out"]
        yield ret
        time.sleep(0.02)


# Traceback (OSError)
2016-10-25 18:22:57,094 [salt.log.setup   ][ERROR   ][20141] An un-handled exception was caught by salt's global exception handler:
OSError: [Errno 3] No such process
Traceback (most recent call last):
File "/usr/lib/python2.7/atexit.py", line 24, in _run_exitfuncs
func(*targs, **kargs)
File "/usr/lib/python2.7/multiprocessing/util.py", line 321, in _exit_function
p._popen.terminate()
File "/usr/lib/python2.7/multiprocessing/forking.py", line 171, in terminate
os.kill(self.pid, signal.SIGTERM)
OSError: [Errno 3] No such process

# Fixed code
def get_event_iter_returns(self, jid, minions, timeout=None):
    """
    Gather the return data from the event system, break hard when timeout
    is reached.
    """
    log.trace("entered - function get_event_iter_returns()")
    if timeout is None:
        timeout = self.opts["timeout"]

    timeout_at = time.time() + timeout

    found = set()
    # Check to see if the jid is real, if not return the empty dict
    if self.returners["{0}.get_load".format(self.opts["master_job_cache"])](jid) == {}:
        log.warning("jid does not exist")
        yield {}
        # stop the iteration, since the jid is invalid
        raise StopIteration()
    # Wait for the hosts to check in
    while True:
        raw = self.event.get_event(timeout, auto_reconnect=self.auto_reconnect)
        if raw is None or time.time() > timeout_at:
            # Timeout reached
            break
        if "minions" in raw.get("data", {}):
            continue
        try:
            found.add(raw["id"])
            ret = {raw["id"]: {"ret": raw["return"]}}
        except KeyError:
            # Ignore other erroneous messages
            continue
        if "out" in raw:
            ret[raw["id"]]["out"] = raw["out"]
        yield ret
        time.sleep(0.02)