feast.errors.FeastClassImportError: Could not import class 'MyCustomEngine' from module 'feast_custom_engine'

[newsbreak-tonglin]

try to add a custom engine(https://docs.feast.dev/how-to-guides/customizing-feast/creating-a-custom-materialization-engine), but got some errors below: feast.errors.FeastClassImportError: Could not import class 'MyCustomEngine' from module 'feast_custom_engine'

my project structure: . ├── init.py ├── data │   ├── driver_stats.parquet │   ├── online_store.db │   └── registry.db ├── entity_example.py ├── example.py ├── feast_custom_engine │   ├── init.py │   ├── pycache │   │   └── init.cpython-38.pyc │   └── my_custom_engine.py └── feature_store.yaml

command: PYTHONPATH=$PYTHONPATH:/Users/xx/feast_test/my_project/feast_custom_engine feast --log-level DEBUG materialize 2022-01-01 2022-12-12

error details: Traceback (most recent call last): File "/Users/xx/.pyenv/versions/3.8.10/bin/feast", line 8, in sys.exit(cli()) File "/Users/xx/.pyenv/versions/3.8.10/lib/python3.8/site-packages/click/core.py", line 829, in call return self.main(*args, **kwargs) File "/Users/xx/.pyenv/versions/3.8.10/lib/python3.8/site-packages/click/core.py", line 782, in main rv = self.invoke(ctx) File "/Users/xx/.pyenv/versions/3.8.10/lib/python3.8/site-packages/click/core.py", line 1259, in invoke return _process_result(sub_ctx.command.invoke(sub_ctx)) File "/Users/xx/.pyenv/versions/3.8.10/lib/python3.8/site-packages/click/core.py", line 1066, in invoke return ctx.invoke(self.callback, **ctx.params) File "/Users/xx/.pyenv/versions/3.8.10/lib/python3.8/site-packages/click/core.py", line 610, in invoke return callback(*args, **kwargs) File "/Users/xx/.pyenv/versions/3.8.10/lib/python3.8/site-packages/click/decorators.py", line 21, in new_func return f(get_current_context(), *args, **kwargs) File "/Users/xx/.pyenv/versions/3.8.10/lib/python3.8/site-packages/feast/cli.py", line 550, in materialize_command store.materialize( File "/Users/xx/.pyenv/versions/3.8.10/lib/python3.8/site-packages/feast/usage.py", line 285, in wrapper raise exc.with_traceback(traceback) File "/Users/xx/.pyenv/versions/3.8.10/lib/python3.8/site-packages/feast/usage.py", line 274, in wrapper return func(*args, **kwargs) File "/Users/xx/.pyenv/versions/3.8.10/lib/python3.8/site-packages/feast/feature_store.py", line 1342, in materialize provider.materialize_single_feature_view( File "/Users/xx/.pyenv/versions/3.8.10/lib/python3.8/site-packages/feast/infra/passthrough_provider.py", line 246, in materialize_single_feature_view jobs = self.batch_engine.materialize(registry, [task]) File "/Users/xx/.pyenv/versions/3.8.10/lib/python3.8/site-packages/feast/infra/passthrough_provider.py", line 89, in batch_engine engine_class = importer.import_class(engine_module, engine_class_name) File "/Users/xx/.pyenv/versions/3.8.10/lib/python3.8/site-packages/feast/importer.py", line 41, in import_class raise FeastClassImportError(module_name, class_name) from None feast.errors.FeastClassImportError: Could not import class 'MyCustomEngine' from module 'feast_custom_engine'

[niklasvm]

Hey @newsbreak-tonglin

It looks like you may need to rename init.py to __init__.py to make MyCustomEngine importable.

[newsbreak-tonglin]

@niklasvm It is init.py actually, but it still can't be imported

[niklasvm]

What does your feature_store.yaml look like? Based on your screenshot I would expect this to work:

batch_engine: feature_custom_engine.feast_custom_engine.MyCustomEngine

[newsbreak-tonglin]

@niklasvm feature_custom_engine.feast_custom_engine.MyCustomEngine doesn't work, below is my feature_store.yaml

project: my_project registry: data/registry.db batch_engine: feature_custom_engine.feast_custom_engine.MyCustomEngine provider: local online_store: path: data/online_store.db offline_store: type: file

[stale[bot]]

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