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https://issues.apache.org/jira/browse/BEAM-12847?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Valentyn Tymofieiev updated BEAM-12847:
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Component/s: sdk-py-core
> Error running Top transform in Dataflow
> ---------------------------------------
>
> Key: BEAM-12847
> URL: https://issues.apache.org/jira/browse/BEAM-12847
> Project: Beam
> Issue Type: Bug
> Components: runner-dataflow, sdk-py-core
> Affects Versions: 2.32.0
> Reporter: Miren Esnaola
> Priority: P2
> Labels: interrupts
>
> When running the following transform in Dataflow (the problem does not happen
> with the direct running)... I is a streaming pipeline where I am using a
> SlidingWindow.
> {code:java}
> beam.combiners.Top.Of(n=10, key=lambda item: item[1]).without_defaults()
> {code}
>
> I am getting an error
>
> {code:java}
> Error message from worker: generic::unknown: Traceback (most recent call
> last): File
> "/usr/local/lib/python3.7/site-packages/apache_beam/runners/worker/sdk_worker.py",
> line 284, in _execute response = task() File
> "/usr/local/lib/python3.7/site-packages/apache_beam/runners/worker/sdk_worker.py",
> line 357, in <lambda> lambda: self.create_worker().do_instruction(request),
> request) File
> "/usr/local/lib/python3.7/site-packages/apache_beam/runners/worker/sdk_worker.py",
> line 602, in do_instruction getattr(request, request_type),
> request.instruction_id) File
> "/usr/local/lib/python3.7/site-packages/apache_beam/runners/worker/sdk_worker.py",
> line 639, in process_bundle bundle_processor.process_bundle(instruction_id))
> File
> "/usr/local/lib/python3.7/site-packages/apache_beam/runners/worker/bundle_processor.py",
> line 994, in process_bundle element.data) File
> "/usr/local/lib/python3.7/site-packages/apache_beam/runners/worker/bundle_processor.py",
> line 222, in process_encoded self.output(decoded_value) File
> "apache_beam/runners/worker/operations.py", line 351, in
> apache_beam.runners.worker.operations.Operation.output File
> "apache_beam/runners/worker/operations.py", line 353, in
> apache_beam.runners.worker.operations.Operation.output File
> "apache_beam/runners/worker/operations.py", line 215, in
> apache_beam.runners.worker.operations.SingletonConsumerSet.receive File
> "apache_beam/runners/worker/operations.py", line 921, in
> apache_beam.runners.worker.operations.CombineOperation.process File
> "apache_beam/runners/worker/operations.py", line 925, in
> apache_beam.runners.worker.operations.CombineOperation.process File
> "/usr/local/lib/python3.7/site-packages/apache_beam/transforms/combiners.py",
> line 835, in extract_only return self.combine_fn.extract_output(accumulator)
> File
> "/usr/local/lib/python3.7/site-packages/apache_beam/transforms/combiners.py",
> line 502, in extract_output heap.sort(reverse=True) File
> "apache_beam/transforms/cy_combiners.py", line 389, in
> apache_beam.transforms.cy_combiners.ComparableValue.__lt__ AssertionError
> passed through: ==>
> dist_proc/dax/workflow/worker/fnapi_service_impl.cc:644{code}
>
> {{What might be the cause of this issue?}}
>
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