def stop(self):
logging.info('Stopping worker watchdog.')
self._worker_manager.configure(
event_pb2.WorkerHeartbeatRequest(
watchdog_config=event_pb2.WatchdogConfig(timeout_ms=-1, )))
self._running = False
self.join()
def __exit__(self, exc_type, exc_val, exc_tb):
logging.info('Disabling worker watchdog.')
self._worker_manager.configure(
event_pb2.WorkerHeartbeatRequest(
watchdog_config=event_pb2.WatchdogConfig(timeout_ms=-1, )))
self._running = False
self.join()
def _reset_manager(self, stopping=False):
"""Reset the graph, session and worker manager."""
self._graph = ops.Graph()
self._session = session_lib.Session(
target=self._target,
graph=self._graph,
config=self._config,
)
if self._devices is None:
self._devices = all_worker_devices(self._session)
with self._graph.as_default():
self._worker_manager = WorkerHeartbeatManager.from_devices(
self._session, self._devices)
if stopping:
timeout_ms = -1
shutdown_mode = event_pb2.NOT_CONFIGURED
else:
timeout_ms = self.shutdown_timeout * 1000
shutdown_mode = event_pb2.WAIT_FOR_COORDINATOR
self._worker_manager.configure(
event_pb2.WorkerHeartbeatRequest(
watchdog_config=event_pb2.WatchdogConfig(
timeout_ms=timeout_ms),
shutdown_mode=shutdown_mode))
def configure_and_run(self):
logging.info('Enabling worker watchdog.')
self._running = True
self._worker_manager.configure(
event_pb2.WorkerHeartbeatRequest(
watchdog_config=event_pb2.WatchdogConfig(
timeout_ms=self.shutdown_timeout * 1000, )))
self.start()
def shutdown(self, timeout_ms=10000):
"""Shutdown all workers after `shutdown_timeout_secs`."""
logging.info('Shutting down %s.', self)
req = event_pb2.WorkerHeartbeatRequest(
watchdog_config=event_pb2.WatchdogConfig(timeout_ms=timeout_ms))
self.configure(req)
# Wait for workers to shutdown. This isn't strictly required
# but it avoids triggering multiple checkpoints with the same lame worker.
logging.info('Waiting %dms for worker shutdown.', timeout_ms)
time.sleep(timeout_ms / 1000)
def shutdown(self, wait_time_in_ms=60000):
"""Shutdown all workers after `shutdown_timeout_secs`."""
logging.info('Shutting down %s.', self)
req = event_pb2.WorkerHeartbeatRequest(
watchdog_config=event_pb2.WatchdogConfig(timeout_ms=wait_time_in_ms),
shutdown_mode=event_pb2.SHUTDOWN_AFTER_TIMEOUT)
self.configure(req)
# Wait for workers to shutdown.
sleep_sec = 10.0 + wait_time_in_ms / 1000
logging.info('Waiting %.2f seconds for worker shutdown.', sleep_sec)
time.sleep(sleep_sec)
def shutdown(self, timeout_ms=10000):
"""Shutdown all workers after `shutdown_timeout_secs`."""
logging.info('Shutting down %s.', self)
req = event_pb2.WorkerHeartbeatRequest(
watchdog_config=event_pb2.WatchdogConfig(timeout_ms=timeout_ms),
shutdown_mode=event_pb2.WAIT_FOR_COORDINATOR)
self.configure(req)
# Wait for workers to shutdown. If we continue immediately, we can create a
# new heartbeat manager before the workers shutdown: this keeps the workers
# alive and can introduce confusing behavior.
sleep_sec = 10.0 + timeout_ms / 1000
logging.info('Waiting %.2f seconds for worker shutdown.', sleep_sec)
time.sleep(sleep_sec)
def _reset_manager(self):
"""Reset the graph, session and worker manager."""
self._graph = ops.Graph()
self._session = session_lib.Session(
target=self._target,
graph=self._graph,
)
if self._devices is None:
self._devices = all_worker_devices(self._session)
with self._graph.as_default():
self._worker_manager = WorkerHeartbeatManager.from_devices(
self._session, self._devices)
self._worker_manager.configure(
event_pb2.WorkerHeartbeatRequest(
watchdog_config=event_pb2.WatchdogConfig(
timeout_ms=self.shutdown_timeout * 1000, )))
def shutdown(self, timeout_ms=10000):
"""Shutdown all workers after `shutdown_timeout_secs`."""
req = event_pb2.WorkerHeartbeatRequest(
watchdog_config=event_pb2.WatchdogConfig(timeout_ms=timeout_ms))
self.configure(req)
