Details
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Bug
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Status: Resolved
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P1
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Resolution: Fixed
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None
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None
Description
Hi,
I'm trying to set a timer from a timer callback in the Python SDK:
class GenerateLoad(beam.DoFn): timer_spec = userstate.TimerSpec('timer', userstate.TimeDomain.WATERMARK) def process(self, element, timer=beam.DoFn.TimerParam(timer_spec)): self.key = element[0] timer.set(0) @userstate.on_timer(timer_spec) def process_timer(self, timer=beam.DoFn.TimerParam(timer_spec)): timer.set(0)
This yields the following Python stack trace:
INFO:apache_beam.utils.subprocess_server:Caused by: java.lang.RuntimeException: Error received from SDK harness for instruction 4: Traceback (most recent call last): INFO:apache_beam.utils.subprocess_server: File "apache_beam/runners/worker/sdk_worker.py", line 245, in _execute INFO:apache_beam.utils.subprocess_server: response = task() INFO:apache_beam.utils.subprocess_server: File "apache_beam/runners/worker/sdk_worker.py", line 302, in <lambda> INFO:apache_beam.utils.subprocess_server: lambda: self.create_worker().do_instruction(request), request) INFO:apache_beam.utils.subprocess_server: File "apache_beam/runners/worker/sdk_worker.py", line 471, in do_instruction INFO:apache_beam.utils.subprocess_server: getattr(request, request_type), request.instruction_id) INFO:apache_beam.utils.subprocess_server: File "apache_beam/runners/worker/sdk_worker.py", line 506, in process_bundle INFO:apache_beam.utils.subprocess_server: bundle_processor.process_bundle(instruction_id)) INFO:apache_beam.utils.subprocess_server: File "apache_beam/runners/worker/bundle_processor.py", line 910, in process_bundle INFO:apache_beam.utils.subprocess_server: element.timer_family_id, timer_data) INFO:apache_beam.utils.subprocess_server: File "apache_beam/runners/worker/operations.py", line 688, in process_timer INFO:apache_beam.utils.subprocess_server: timer_data.fire_timestamp) INFO:apache_beam.utils.subprocess_server: File "apache_beam/runners/common.py", line 990, in process_user_timer INFO:apache_beam.utils.subprocess_server: self._reraise_augmented(exn) INFO:apache_beam.utils.subprocess_server: File "apache_beam/runners/common.py", line 1043, in _reraise_augmented INFO:apache_beam.utils.subprocess_server: raise_with_traceback(new_exn) INFO:apache_beam.utils.subprocess_server: File "apache_beam/runners/common.py", line 988, in process_user_timer INFO:apache_beam.utils.subprocess_server: self.do_fn_invoker.invoke_user_timer(timer_spec, key, window, timestamp) INFO:apache_beam.utils.subprocess_server: File "apache_beam/runners/common.py", line 517, in invoke_user_timer INFO:apache_beam.utils.subprocess_server: self.user_state_context, key, window, timestamp)) INFO:apache_beam.utils.subprocess_server: File "apache_beam/runners/common.py", line 1093, in process_outputs INFO:apache_beam.utils.subprocess_server: for result in results: INFO:apache_beam.utils.subprocess_server: File "/Users/max/Dev/beam/sdks/python/apache_beam/testing/load_tests/pardo_test.py", line 185, in process_timer INFO:apache_beam.utils.subprocess_server: timer.set(0) INFO:apache_beam.utils.subprocess_server: File "apache_beam/runners/worker/bundle_processor.py", line 589, in set INFO:apache_beam.utils.subprocess_server: self._timer_coder_impl.encode_to_stream(timer, self._output_stream, True) INFO:apache_beam.utils.subprocess_server: File "apache_beam/coders/coder_impl.py", line 651, in encode_to_stream INFO:apache_beam.utils.subprocess_server: value.hold_timestamp, out, True) INFO:apache_beam.utils.subprocess_server: File "apache_beam/coders/coder_impl.py", line 608, in encode_to_stream INFO:apache_beam.utils.subprocess_server: millis = value.micros // 1000 INFO:apache_beam.utils.subprocess_server:AttributeError: 'NoneType' object has no attribute 'micros' [while running 'GenerateLoad']
Looking at the code base, I'm not sure we have tests for timer output timestamps. Am I missing something?
