[
https://issues.apache.org/jira/browse/BEAM-7981?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16907813#comment-16907813
]
Ahmet Altay commented on BEAM-7981:
-----------------------------------
Ack. Thank you.
> ParDo function wrapper doesn't support Iterable output types
> ------------------------------------------------------------
>
> Key: BEAM-7981
> URL: https://issues.apache.org/jira/browse/BEAM-7981
> Project: Beam
> Issue Type: Bug
> Components: sdk-py-core
> Reporter: Udi Meiri
> Priority: Major
>
> I believe the bug is in CallableWrapperDoFn.default_type_hints, which
> converts Iterable[str] to str.
> This test will be included (commented out) in
> https://github.com/apache/beam/pull/9283
> {code}
> def test_typed_callable_iterable_output(self):
> @typehints.with_input_types(int)
> @typehints.with_output_types(typehints.Iterable[str])
> def do_fn(element):
> return [[str(element)] * 2]
> result = [1, 2] | beam.ParDo(do_fn)
> self.assertEqual([['1', '1'], ['2', '2']], sorted(result))
> {code}
> Result:
> {code}
> ======================================================================
> ERROR: test_typed_callable_iterable_output
> (apache_beam.typehints.typed_pipeline_test.MainInputTest)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/typehints/typed_pipeline_test.py",
> line 104, in test_typed_callable_iterable_output
> result = [1, 2] | beam.ParDo(do_fn)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/transforms/ptransform.py",
> line 519, in __ror__
> p.run().wait_until_finish()
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/pipeline.py",
> line 406, in run
> self._options).run(False)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/pipeline.py",
> line 419, in run
> return self.runner.run_pipeline(self, self._options)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/direct/direct_runner.py",
> line 129, in run_pipeline
> return runner.run_pipeline(pipeline, options)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/portability/fn_api_runner.py",
> line 366, in run_pipeline
> default_environment=self._default_environment))
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/portability/fn_api_runner.py",
> line 373, in run_via_runner_api
> return self.run_stages(stage_context, stages)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/portability/fn_api_runner.py",
> line 455, in run_stages
> stage_context.safe_coders)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/portability/fn_api_runner.py",
> line 733, in _run_stage
> result, splits = bundle_manager.process_bundle(data_input, data_output)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/portability/fn_api_runner.py",
> line 1663, in process_bundle
> part, expected_outputs), part_inputs):
> File "/usr/lib/python3.7/concurrent/futures/_base.py", line 586, in
> result_iterator
> yield fs.pop().result()
> File "/usr/lib/python3.7/concurrent/futures/_base.py", line 432, in result
> return self.__get_result()
> File "/usr/lib/python3.7/concurrent/futures/_base.py", line 384, in
> __get_result
> raise self._exception
> File "/usr/lib/python3.7/concurrent/futures/thread.py", line 57, in run
> result = self.fn(*self.args, **self.kwargs)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/portability/fn_api_runner.py",
> line 1663, in <lambda>
> part, expected_outputs), part_inputs):
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/portability/fn_api_runner.py",
> line 1601, in process_bundle
> result_future = self._worker_handler.control_conn.push(process_bundle_req)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/portability/fn_api_runner.py",
> line 1080, in push
> response = self.worker.do_instruction(request)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/sdk_worker.py",
> line 343, in do_instruction
> request.instruction_id)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/sdk_worker.py",
> line 369, in process_bundle
> bundle_processor.process_bundle(instruction_id))
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/bundle_processor.py",
> line 593, in process_bundle
> data.ptransform_id].process_encoded(data.data)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/bundle_processor.py",
> line 143, in process_encoded
> self.output(decoded_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/operations.py",
> line 256, in output
> cython.cast(Receiver,
> self.receivers[output_index]).receive(windowed_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/operations.py",
> line 143, in receive
> self.consumer.process(windowed_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/operations.py",
> line 435, in process
> self.output(windowed_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/operations.py",
> line 256, in output
> cython.cast(Receiver,
> self.receivers[output_index]).receive(windowed_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/operations.py",
> line 143, in receive
> self.consumer.process(windowed_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/operations.py",
> line 594, in process
> delayed_application = self.dofn_receiver.receive(o)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/common.py",
> line 776, in receive
> self.process(windowed_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/common.py",
> line 782, in process
> self._reraise_augmented(exn)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/common.py",
> line 849, in _reraise_augmented
> raise_with_traceback(new_exn)
> File
> "/usr/local/google/home/ehudm/virtualenvs/beam-py37/lib/python3.7/site-packages/future/utils/__init__.py",
> line 419, in raise_with_traceback
> raise exc.with_traceback(traceback)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/common.py",
> line 780, in process
> return self.do_fn_invoker.invoke_process(windowed_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/common.py",
> line 441, in invoke_process
> windowed_value, self.process_method(windowed_value.value))
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/common.py",
> line 919, in process_outputs
> self.main_receivers.receive(windowed_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/operations.py",
> line 142, in receive
> self.update_counters_start(windowed_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/operations.py",
> line 122, in update_counters_start
> self.opcounter.update_from(windowed_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/opcounters.py",
> line 196, in update_from
> self.do_sample(windowed_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/opcounters.py",
> line 214, in do_sample
> self.coder_impl.get_estimated_size_and_observables(windowed_value))
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/coders/coder_impl.py",
> line 1024, in get_estimated_size_and_observables
> value.value, nested=nested))
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/coders/coder_impl.py",
> line 220, in get_estimated_size_and_observables
> return self.estimate_size(value, nested), []
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/coders/coder_impl.py",
> line 212, in estimate_size
> return self._get_nested_size(self._size_estimator(value), nested)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/coders/coders.py",
> line 135, in estimate_size
> return len(self.encode(value))
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/coders/coders.py",
> line 326, in encode
> return value.encode('utf-8')
> AttributeError: 'list' object has no attribute 'encode' [while running
> 'ParDo(CallableWrapperDoFn)']
> -------------------- >> begin captured logging << --------------------
> root: INFO: Generating grammar tables from
> /usr/lib/python3.7/lib2to3/Grammar.txt
> root: INFO: Generating grammar tables from
> /usr/lib/python3.7/lib2to3/PatternGrammar.txt
> avro.schema: Level 5: Register new name for 'org.apache.avro.file.Header'
> avro.schema: Level 5: Register new name for 'org.apache.avro.file.magic'
> avro.schema: Level 5: Register new name for 'org.apache.avro.file.sync'
> root: INFO: ==================== <function annotate_downstream_side_inputs at
> 0x7f3a39918158> ====================
> root: DEBUG: 3 [1, 1, 1]
> root: DEBUG: Stages: ['ref_AppliedPTransform_CreatePInput0/Read_3\n
> CreatePInput0/Read:beam:transform:read:v1\n must follow: \n
> downstream_side_inputs: ',
> 'ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4\n
> ParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ', 'ref_AppliedPTransform__MaterializeValues0_5\n
> _MaterializeValues0:beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ']
> root: INFO: ==================== <function fix_side_input_pcoll_coders at
> 0x7f3a39918268> ====================
> root: DEBUG: 3 [1, 1, 1]
> root: DEBUG: Stages: ['ref_AppliedPTransform_CreatePInput0/Read_3\n
> CreatePInput0/Read:beam:transform:read:v1\n must follow: \n
> downstream_side_inputs: ',
> 'ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4\n
> ParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ', 'ref_AppliedPTransform__MaterializeValues0_5\n
> _MaterializeValues0:beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ']
> root: INFO: ==================== <function lift_combiners at 0x7f3a399182f0>
> ====================
> root: DEBUG: 3 [1, 1, 1]
> root: DEBUG: Stages: ['ref_AppliedPTransform_CreatePInput0/Read_3\n
> CreatePInput0/Read:beam:transform:read:v1\n must follow: \n
> downstream_side_inputs: ',
> 'ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4\n
> ParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ', 'ref_AppliedPTransform__MaterializeValues0_5\n
> _MaterializeValues0:beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ']
> root: INFO: ==================== <function expand_sdf at 0x7f3a39918378>
> ====================
> root: DEBUG: 3 [1, 1, 1]
> root: DEBUG: Stages: ['ref_AppliedPTransform_CreatePInput0/Read_3\n
> CreatePInput0/Read:beam:transform:read:v1\n must follow: \n
> downstream_side_inputs: ',
> 'ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4\n
> ParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ', 'ref_AppliedPTransform__MaterializeValues0_5\n
> _MaterializeValues0:beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ']
> root: INFO: ==================== <function expand_gbk at 0x7f3a39918400>
> ====================
> root: DEBUG: 3 [1, 1, 1]
> root: DEBUG: Stages: ['ref_AppliedPTransform_CreatePInput0/Read_3\n
> CreatePInput0/Read:beam:transform:read:v1\n must follow: \n
> downstream_side_inputs: ',
> 'ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4\n
> ParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ', 'ref_AppliedPTransform__MaterializeValues0_5\n
> _MaterializeValues0:beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ']
> root: INFO: ==================== <function sink_flattens at 0x7f3a39918510>
> ====================
> root: DEBUG: 3 [1, 1, 1]
> root: DEBUG: Stages: ['ref_AppliedPTransform_CreatePInput0/Read_3\n
> CreatePInput0/Read:beam:transform:read:v1\n must follow: \n
> downstream_side_inputs: ',
> 'ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4\n
> ParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ', 'ref_AppliedPTransform__MaterializeValues0_5\n
> _MaterializeValues0:beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ']
> root: INFO: ==================== <function greedily_fuse at 0x7f3a39918598>
> ====================
> root: DEBUG: 1 [3]
> root: DEBUG: Stages:
> ['((ref_AppliedPTransform_CreatePInput0/Read_3)+(ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4))+(ref_AppliedPTransform__MaterializeValues0_5)\n
>
> CreatePInput0/Read:beam:transform:read:v1\nParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n_MaterializeValues0:beam:transform:pardo:v1\n
> must follow: \n downstream_side_inputs: ']
> root: INFO: ==================== <function read_to_impulse at 0x7f3a39918620>
> ====================
> root: DEBUG: 1 [4]
> root: DEBUG: Stages:
> ['((ref_AppliedPTransform_CreatePInput0/Read_3)+(ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4))+(ref_AppliedPTransform__MaterializeValues0_5)\n
>
> ParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n_MaterializeValues0:beam:transform:pardo:v1\nCreatePInput0/Read/Impulse:beam:transform:impulse:v1\nCreatePInput0/Read:beam:transform:read_from_impulse_python:v1\n
> must follow: \n downstream_side_inputs: ']
> root: INFO: ==================== <function impulse_to_input at
> 0x7f3a399186a8> ====================
> root: DEBUG: 1 [4]
> root: DEBUG: Stages:
> ['((ref_AppliedPTransform_CreatePInput0/Read_3)+(ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4))+(ref_AppliedPTransform__MaterializeValues0_5)\n
>
> ParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n_MaterializeValues0:beam:transform:pardo:v1\nCreatePInput0/Read:beam:transform:read_from_impulse_python:v1\nCreatePInput0/Read/Impulse:beam:source:runner:0.1\n
> must follow: \n downstream_side_inputs: ']
> root: INFO: ==================== <function inject_timer_pcollections at
> 0x7f3a39918840> ====================
> root: DEBUG: 1 [4]
> root: DEBUG: Stages:
> ['((ref_AppliedPTransform_CreatePInput0/Read_3)+(ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4))+(ref_AppliedPTransform__MaterializeValues0_5)\n
>
> ParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n_MaterializeValues0:beam:transform:pardo:v1\nCreatePInput0/Read:beam:transform:read_from_impulse_python:v1\nCreatePInput0/Read/Impulse:beam:source:runner:0.1\n
> must follow: \n downstream_side_inputs: ']
> root: INFO: ==================== <function sort_stages at 0x7f3a399188c8>
> ====================
> root: DEBUG: 1 [4]
> root: DEBUG: Stages:
> ['((ref_AppliedPTransform_CreatePInput0/Read_3)+(ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4))+(ref_AppliedPTransform__MaterializeValues0_5)\n
>
> ParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n_MaterializeValues0:beam:transform:pardo:v1\nCreatePInput0/Read:beam:transform:read_from_impulse_python:v1\nCreatePInput0/Read/Impulse:beam:source:runner:0.1\n
> must follow: \n downstream_side_inputs: ']
> root: INFO: ==================== <function window_pcollection_coders at
> 0x7f3a39918950> ====================
> root: DEBUG: 1 [4]
> root: DEBUG: Stages:
> ['((ref_AppliedPTransform_CreatePInput0/Read_3)+(ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4))+(ref_AppliedPTransform__MaterializeValues0_5)\n
>
> ParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n_MaterializeValues0:beam:transform:pardo:v1\nCreatePInput0/Read:beam:transform:read_from_impulse_python:v1\nCreatePInput0/Read/Impulse:beam:source:runner:0.1\n
> must follow: \n downstream_side_inputs: ']
> root: INFO: Running
> ((ref_AppliedPTransform_CreatePInput0/Read_3)+(ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4))+(ref_AppliedPTransform__MaterializeValues0_5)
> root: DEBUG: start <DoOperation _MaterializeValues0 output_tags=['out'],
> receivers=[ConsumerSet[_MaterializeValues0.out0,
> coder=WindowedValueCoder[FastPrimitivesCoder], len(consumers)=0]]>
> root: DEBUG: start <DoOperation ParDo(CallableWrapperDoFn)
> output_tags=['out'],
> receivers=[SingletonConsumerSet[ParDo(CallableWrapperDoFn).out0,
> coder=WindowedValueCoder[StrUtf8Coder], len(consumers)=1]]>
> root: DEBUG: start <ImpulseReadOperation
> receivers=[SingletonConsumerSet[CreatePInput0/Read.out0,
> coder=WindowedValueCoder[VarIntCoder], len(consumers)=1]]>
> root: DEBUG: start <DataInputOperation
> receivers=[SingletonConsumerSet[CreatePInput0/Read/Impulse.out0,
> coder=WindowedValueCoder[BytesCoder], len(consumers)=1]]>
> --------------------- >> end captured logging << ---------------------
> ----------------------------------------------------------------------
> Ran 1 test in 0.068s
> FAILED (errors=1)
> Error
> Traceback (most recent call last):
> File "/usr/lib/python3.7/unittest/case.py", line 59, in testPartExecutor
> yield
> File "/usr/lib/python3.7/unittest/case.py", line 615, in run
> testMethod()
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/typehints/typed_pipeline_test.py",
> line 104, in test_typed_callable_iterable_output
> result = [1, 2] | beam.ParDo(do_fn)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/transforms/ptransform.py",
> line 519, in __ror__
> p.run().wait_until_finish()
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/pipeline.py",
> line 406, in run
> self._options).run(False)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/pipeline.py",
> line 419, in run
> return self.runner.run_pipeline(self, self._options)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/direct/direct_runner.py",
> line 129, in run_pipeline
> return runner.run_pipeline(pipeline, options)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/portability/fn_api_runner.py",
> line 366, in run_pipeline
> default_environment=self._default_environment))
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/portability/fn_api_runner.py",
> line 373, in run_via_runner_api
> return self.run_stages(stage_context, stages)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/portability/fn_api_runner.py",
> line 455, in run_stages
> stage_context.safe_coders)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/portability/fn_api_runner.py",
> line 733, in _run_stage
> result, splits = bundle_manager.process_bundle(data_input, data_output)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/portability/fn_api_runner.py",
> line 1663, in process_bundle
> part, expected_outputs), part_inputs):
> File "/usr/lib/python3.7/concurrent/futures/_base.py", line 586, in
> result_iterator
> yield fs.pop().result()
> File "/usr/lib/python3.7/concurrent/futures/_base.py", line 432, in result
> return self.__get_result()
> File "/usr/lib/python3.7/concurrent/futures/_base.py", line 384, in
> __get_result
> raise self._exception
> File "/usr/lib/python3.7/concurrent/futures/thread.py", line 57, in run
> result = self.fn(*self.args, **self.kwargs)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/portability/fn_api_runner.py",
> line 1663, in <lambda>
> part, expected_outputs), part_inputs):
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/portability/fn_api_runner.py",
> line 1601, in process_bundle
> result_future = self._worker_handler.control_conn.push(process_bundle_req)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/portability/fn_api_runner.py",
> line 1080, in push
> response = self.worker.do_instruction(request)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/sdk_worker.py",
> line 343, in do_instruction
> request.instruction_id)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/sdk_worker.py",
> line 369, in process_bundle
> bundle_processor.process_bundle(instruction_id))
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/bundle_processor.py",
> line 593, in process_bundle
> data.ptransform_id].process_encoded(data.data)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/bundle_processor.py",
> line 143, in process_encoded
> self.output(decoded_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/operations.py",
> line 256, in output
> cython.cast(Receiver,
> self.receivers[output_index]).receive(windowed_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/operations.py",
> line 143, in receive
> self.consumer.process(windowed_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/operations.py",
> line 435, in process
> self.output(windowed_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/operations.py",
> line 256, in output
> cython.cast(Receiver,
> self.receivers[output_index]).receive(windowed_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/operations.py",
> line 143, in receive
> self.consumer.process(windowed_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/operations.py",
> line 594, in process
> delayed_application = self.dofn_receiver.receive(o)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/common.py",
> line 776, in receive
> self.process(windowed_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/common.py",
> line 782, in process
> self._reraise_augmented(exn)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/common.py",
> line 849, in _reraise_augmented
> raise_with_traceback(new_exn)
> File
> "/usr/local/google/home/ehudm/virtualenvs/beam-py37/lib/python3.7/site-packages/future/utils/__init__.py",
> line 419, in raise_with_traceback
> raise exc.with_traceback(traceback)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/common.py",
> line 780, in process
> return self.do_fn_invoker.invoke_process(windowed_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/common.py",
> line 441, in invoke_process
> windowed_value, self.process_method(windowed_value.value))
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/common.py",
> line 919, in process_outputs
> self.main_receivers.receive(windowed_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/operations.py",
> line 142, in receive
> self.update_counters_start(windowed_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/operations.py",
> line 122, in update_counters_start
> self.opcounter.update_from(windowed_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/opcounters.py",
> line 196, in update_from
> self.do_sample(windowed_value)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/runners/worker/opcounters.py",
> line 214, in do_sample
> self.coder_impl.get_estimated_size_and_observables(windowed_value))
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/coders/coder_impl.py",
> line 1024, in get_estimated_size_and_observables
> value.value, nested=nested))
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/coders/coder_impl.py",
> line 220, in get_estimated_size_and_observables
> return self.estimate_size(value, nested), []
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/coders/coder_impl.py",
> line 212, in estimate_size
> return self._get_nested_size(self._size_estimator(value), nested)
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/coders/coders.py",
> line 135, in estimate_size
> return len(self.encode(value))
> File
> "/usr/local/google/home/ehudm/src/beam/sdks/python/apache_beam/coders/coders.py",
> line 326, in encode
> return value.encode('utf-8')
> Exception: 'list' object has no attribute 'encode' [while running
> 'ParDo(CallableWrapperDoFn)']
> -------------------- >> begin captured logging << --------------------
> root: INFO: Generating grammar tables from
> /usr/lib/python3.7/lib2to3/Grammar.txt
> root: INFO: Generating grammar tables from
> /usr/lib/python3.7/lib2to3/PatternGrammar.txt
> avro.schema: Level 5: Register new name for 'org.apache.avro.file.Header'
> avro.schema: Level 5: Register new name for 'org.apache.avro.file.magic'
> avro.schema: Level 5: Register new name for 'org.apache.avro.file.sync'
> root: INFO: ==================== <function annotate_downstream_side_inputs at
> 0x7f3a39918158> ====================
> root: DEBUG: 3 [1, 1, 1]
> root: DEBUG: Stages: ['ref_AppliedPTransform_CreatePInput0/Read_3\n
> CreatePInput0/Read:beam:transform:read:v1\n must follow: \n
> downstream_side_inputs: ',
> 'ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4\n
> ParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ', 'ref_AppliedPTransform__MaterializeValues0_5\n
> _MaterializeValues0:beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ']
> root: INFO: ==================== <function fix_side_input_pcoll_coders at
> 0x7f3a39918268> ====================
> root: DEBUG: 3 [1, 1, 1]
> root: DEBUG: Stages: ['ref_AppliedPTransform_CreatePInput0/Read_3\n
> CreatePInput0/Read:beam:transform:read:v1\n must follow: \n
> downstream_side_inputs: ',
> 'ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4\n
> ParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ', 'ref_AppliedPTransform__MaterializeValues0_5\n
> _MaterializeValues0:beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ']
> root: INFO: ==================== <function lift_combiners at 0x7f3a399182f0>
> ====================
> root: DEBUG: 3 [1, 1, 1]
> root: DEBUG: Stages: ['ref_AppliedPTransform_CreatePInput0/Read_3\n
> CreatePInput0/Read:beam:transform:read:v1\n must follow: \n
> downstream_side_inputs: ',
> 'ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4\n
> ParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ', 'ref_AppliedPTransform__MaterializeValues0_5\n
> _MaterializeValues0:beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ']
> root: INFO: ==================== <function expand_sdf at 0x7f3a39918378>
> ====================
> root: DEBUG: 3 [1, 1, 1]
> root: DEBUG: Stages: ['ref_AppliedPTransform_CreatePInput0/Read_3\n
> CreatePInput0/Read:beam:transform:read:v1\n must follow: \n
> downstream_side_inputs: ',
> 'ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4\n
> ParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ', 'ref_AppliedPTransform__MaterializeValues0_5\n
> _MaterializeValues0:beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ']
> root: INFO: ==================== <function expand_gbk at 0x7f3a39918400>
> ====================
> root: DEBUG: 3 [1, 1, 1]
> root: DEBUG: Stages: ['ref_AppliedPTransform_CreatePInput0/Read_3\n
> CreatePInput0/Read:beam:transform:read:v1\n must follow: \n
> downstream_side_inputs: ',
> 'ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4\n
> ParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ', 'ref_AppliedPTransform__MaterializeValues0_5\n
> _MaterializeValues0:beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ']
> root: INFO: ==================== <function sink_flattens at 0x7f3a39918510>
> ====================
> root: DEBUG: 3 [1, 1, 1]
> root: DEBUG: Stages: ['ref_AppliedPTransform_CreatePInput0/Read_3\n
> CreatePInput0/Read:beam:transform:read:v1\n must follow: \n
> downstream_side_inputs: ',
> 'ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4\n
> ParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ', 'ref_AppliedPTransform__MaterializeValues0_5\n
> _MaterializeValues0:beam:transform:pardo:v1\n must follow: \n
> downstream_side_inputs: ']
> root: INFO: ==================== <function greedily_fuse at 0x7f3a39918598>
> ====================
> root: DEBUG: 1 [3]
> root: DEBUG: Stages:
> ['((ref_AppliedPTransform_CreatePInput0/Read_3)+(ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4))+(ref_AppliedPTransform__MaterializeValues0_5)\n
>
> CreatePInput0/Read:beam:transform:read:v1\nParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n_MaterializeValues0:beam:transform:pardo:v1\n
> must follow: \n downstream_side_inputs: ']
> root: INFO: ==================== <function read_to_impulse at 0x7f3a39918620>
> ====================
> root: DEBUG: 1 [4]
> root: DEBUG: Stages:
> ['((ref_AppliedPTransform_CreatePInput0/Read_3)+(ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4))+(ref_AppliedPTransform__MaterializeValues0_5)\n
>
> ParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n_MaterializeValues0:beam:transform:pardo:v1\nCreatePInput0/Read/Impulse:beam:transform:impulse:v1\nCreatePInput0/Read:beam:transform:read_from_impulse_python:v1\n
> must follow: \n downstream_side_inputs: ']
> root: INFO: ==================== <function impulse_to_input at
> 0x7f3a399186a8> ====================
> root: DEBUG: 1 [4]
> root: DEBUG: Stages:
> ['((ref_AppliedPTransform_CreatePInput0/Read_3)+(ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4))+(ref_AppliedPTransform__MaterializeValues0_5)\n
>
> ParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n_MaterializeValues0:beam:transform:pardo:v1\nCreatePInput0/Read:beam:transform:read_from_impulse_python:v1\nCreatePInput0/Read/Impulse:beam:source:runner:0.1\n
> must follow: \n downstream_side_inputs: ']
> root: INFO: ==================== <function inject_timer_pcollections at
> 0x7f3a39918840> ====================
> root: DEBUG: 1 [4]
> root: DEBUG: Stages:
> ['((ref_AppliedPTransform_CreatePInput0/Read_3)+(ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4))+(ref_AppliedPTransform__MaterializeValues0_5)\n
>
> ParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n_MaterializeValues0:beam:transform:pardo:v1\nCreatePInput0/Read:beam:transform:read_from_impulse_python:v1\nCreatePInput0/Read/Impulse:beam:source:runner:0.1\n
> must follow: \n downstream_side_inputs: ']
> root: INFO: ==================== <function sort_stages at 0x7f3a399188c8>
> ====================
> root: DEBUG: 1 [4]
> root: DEBUG: Stages:
> ['((ref_AppliedPTransform_CreatePInput0/Read_3)+(ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4))+(ref_AppliedPTransform__MaterializeValues0_5)\n
>
> ParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n_MaterializeValues0:beam:transform:pardo:v1\nCreatePInput0/Read:beam:transform:read_from_impulse_python:v1\nCreatePInput0/Read/Impulse:beam:source:runner:0.1\n
> must follow: \n downstream_side_inputs: ']
> root: INFO: ==================== <function window_pcollection_coders at
> 0x7f3a39918950> ====================
> root: DEBUG: 1 [4]
> root: DEBUG: Stages:
> ['((ref_AppliedPTransform_CreatePInput0/Read_3)+(ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4))+(ref_AppliedPTransform__MaterializeValues0_5)\n
>
> ParDo(CallableWrapperDoFn):beam:transform:pardo:v1\n_MaterializeValues0:beam:transform:pardo:v1\nCreatePInput0/Read:beam:transform:read_from_impulse_python:v1\nCreatePInput0/Read/Impulse:beam:source:runner:0.1\n
> must follow: \n downstream_side_inputs: ']
> root: INFO: Running
> ((ref_AppliedPTransform_CreatePInput0/Read_3)+(ref_AppliedPTransform_ParDo(CallableWrapperDoFn)_4))+(ref_AppliedPTransform__MaterializeValues0_5)
> root: DEBUG: start <DoOperation _MaterializeValues0 output_tags=['out'],
> receivers=[ConsumerSet[_MaterializeValues0.out0,
> coder=WindowedValueCoder[FastPrimitivesCoder], len(consumers)=0]]>
> root: DEBUG: start <DoOperation ParDo(CallableWrapperDoFn)
> output_tags=['out'],
> receivers=[SingletonConsumerSet[ParDo(CallableWrapperDoFn).out0,
> coder=WindowedValueCoder[StrUtf8Coder], len(consumers)=1]]>
> root: DEBUG: start <ImpulseReadOperation
> receivers=[SingletonConsumerSet[CreatePInput0/Read.out0,
> coder=WindowedValueCoder[VarIntCoder], len(consumers)=1]]>
> root: DEBUG: start <DataInputOperation
> receivers=[SingletonConsumerSet[CreatePInput0/Read/Impulse.out0,
> coder=WindowedValueCoder[BytesCoder], len(consumers)=1]]>
> --------------------- >> end captured logging << ---------------------
> {code}
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