tvalentyn opened a new issue, #31294:
URL: https://github.com/apache/beam/issues/31294

   ### What happened?
   
   Sample failure:
   
   ```
   $ pytest 
apache_beam/ml/inference/tensorflow_inference_test.py::TFRunInferenceTest::test_predict_numpy_with_batch_size
   
==================================================================================================================================
 test session starts 
===================================================================================================================================
   platform linux -- Python 3.9.18, pytest-7.4.4, pluggy-1.5.0
   rootdir: /home/valentyn/projects/beam/beam/beam/sdks/python
   configfile: pytest.ini
   plugins: xdist-3.6.1, requests-mock-1.12.1, timeout-2.3.1, hypothesis-6.102.1
   timeout: 600.0s
   timeout method: signal
   timeout func_only: False
   collected 1 item                                                             
                                                                                
                                                                                
                                            
   
   apache_beam/ml/inference/tensorflow_inference_test.py F                      
                                                                                
                                                                                
                                      [100%]
   
   
========================================================================================================================================
 FAILURES 
========================================================================================================================================
   
_________________________________________________________________________________________________________________
 TFRunInferenceTest.test_predict_numpy_with_batch_size 
__________________________________________________________________________________________________________________
   
   self = 
<apache_beam.ml.inference.tensorflow_inference_test.TFRunInferenceTest 
testMethod=test_predict_numpy_with_batch_size>
   
       def test_predict_numpy_with_batch_size(self):
   >     model = _create_mult2_model()
   
   apache_beam/ml/inference/tensorflow_inference_test.py:220: 
   _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
   apache_beam/ml/inference/tensorflow_inference_test.py:68: in 
_create_mult2_model
       inputs = tf.keras.Input(shape=(3))
   
test-suites/tox/py39/build/srcs/sdks/python/target/.tox-py39-ml/py39-ml/lib/python3.9/site-packages/keras/src/layers/core/input_layer.py:143:
 in Input
       layer = InputLayer(
   
test-suites/tox/py39/build/srcs/sdks/python/target/.tox-py39-ml/py39-ml/lib/python3.9/site-packages/keras/src/layers/core/input_layer.py:46:
 in __init__
       shape = backend.standardize_shape(shape)
   _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
   
   shape = 3
   
       def standardize_shape(shape):
           if not isinstance(shape, tuple):
               if shape is None:
                   raise ValueError("Undefined shapes are not supported.")
               if not hasattr(shape, "__iter__"):
   >               raise ValueError(f"Cannot convert '{shape}' to a shape.")
   E               ValueError: Cannot convert '3' to a shape.
   
   
test-suites/tox/py39/build/srcs/sdks/python/target/.tox-py39-ml/py39-ml/lib/python3.9/site-packages/keras/src/backend/common/variables.py:530:
 ValueError
   
   ```
   
   ### Issue Failure
   
   Failure: Test is continually failing
   
   ### Issue Priority
   
   Priority: 2 (backlog / disabled test but we think the product is healthy)
   
   ### 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: Spark Runner
   - [ ] Component: Flink Runner
   - [ ] Component: Samza Runner
   - [ ] Component: Twister2 Runner
   - [ ] Component: Hazelcast Jet Runner
   - [ ] Component: Google Cloud Dataflow Runner


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