Chris Chandler created BEAM-12391:
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Summary: WriteToAvro fails if fastavro loads its python
implementation of writer
Key: BEAM-12391
URL: https://issues.apache.org/jira/browse/BEAM-12391
Project: Beam
Issue Type: Bug
Components: io-py-avro
Affects Versions: 2.29.0, 2.28.0, 2.27.0, 2.26.0, 2.25.0
Reporter: Chris Chandler
It's possible for fastavro to fail to correctly load its cython implementation
of the Writer class in which case it will silently fall back to a pure python
implementation. If this happens there's no outward indication, but line 621 in
io/avroio.py will fail because writer.fo is only present on the cython
implementation.
To reproduce you can modify fastavro's write.py to only use its fallback:
{code}
#from . import _write
from . import _write_py as _write
{code}
And then run a workflow that sinks to WriteToAvro(use_fastavro=True).
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