shunping opened a new issue, #33356:
URL: https://github.com/apache/beam/issues/33356
### What happened?
Code to reproduce:
```python
import apache_beam as beam
from apache_beam.options.pipeline_options import PipelineOptions
from apache_beam.transforms import window
class _Unpicklable(object):
def __init__(self, value):
self.value = value
def __getstate__(self):
raise NotImplementedError()
def __setstate__(self, state):
raise NotImplementedError()
class _UnpicklableCoder(beam.coders.Coder):
def encode(self, value):
return str(value.value).encode()
def decode(self, encoded):
return _Unpicklable(int(encoded.decode()))
def to_type_hint(self):
return _Unpicklable
def is_deterministic(self):
return True
beam.coders.registry.register_coder(_Unpicklable, _UnpicklableCoder)
def pipeline_fn(root):
values = [_Unpicklable(i) for i in range(5)]
#return root | beam.Create(values) | beam.Reshuffle() | beam.Map(lambda x:
x.value*2)
return root | beam.Create(values).with_output_types(_Unpicklable) \
| beam.WindowInto(window.SlidingWindows(size=3, period=1)) \
| beam.Reshuffle().with_output_types(_Unpicklable) \
| beam.Map(lambda x: x.value*2)
options = PipelineOptions(runner='DirectRunner', direct_num_workers=1)
pipeline = beam.Pipeline(options=options)
out = pipeline_fn(pipeline)
result = pipeline.run()
result.wait_until_finish()
```
### Issue Priority
Priority: 2 (default / most bugs should be filed as P2)
### Issue Components
- [X] Component: Python SDK
- [ ] Component: Java SDK
- [ ] Component: Go SDK
- [ ] Component: Typescript SDK
- [ ] Component: IO connector
- [ ] Component: Beam YAML
- [ ] Component: Beam examples
- [ ] Component: Beam playground
- [ ] Component: Beam katas
- [ ] Component: Website
- [ ] Component: Infrastructure
- [ ] Component: Spark Runner
- [ ] Component: Flink Runner
- [ ] Component: Samza Runner
- [ ] Component: Twister2 Runner
- [ ] Component: Hazelcast Jet Runner
- [ ] Component: Google Cloud Dataflow Runner
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