[jira] [Created] (MADLIB-1371) DL: Exception during madlib_keras_fit when model_arch_id is passed as NULL

[Nikhil (JIRA)]

Nikhil created MADLIB-1371:
------------------------------

             Summary: DL: Exception during madlib_keras_fit when model_arch_id 
is passed as NULL
                 Key: MADLIB-1371
                 URL: https://issues.apache.org/jira/browse/MADLIB-1371
             Project: Apache MADlib
          Issue Type: Bug
          Components: Deep Learning
            Reporter: Nikhil
             Fix For: v1.17


While calling madlib_keras_fit, if we pass in the model arch id as NULL, we get 
the following exception

{code}

SELECT madlib_keras_fit(
 'cifar_10_sample_batched',
 'keras_saved_out',
 'model_arch',
 NULL, --null model arch
 $$ optimizer=SGD(lr=0.01, decay=1e-6, nesterov=True), 
loss='categorical_crossentropy', metrics=['mae']$$::text,
 $$ batch_size=2, epochs=1, verbose=0 $$::text,
 3,
 NULL);


LINE 1: ...el_arch, model_weights FROM model_arch WHERE model_id = None
                                                                   ^
QUERY:  SELECT model_arch, model_weights FROM model_arch WHERE model_id = None
CONTEXT:  Traceback (most recent call last):
  PL/Python function "madlib_keras_fit", line 21, in <module>
    madlib_keras.fit(**globals())
  PL/Python function "madlib_keras_fit", line 42, in wrapper
  PL/Python function "madlib_keras_fit", line 95, in fit
PL/Python function "madlib_keras_fit"
{code}
 



 We should instead error out gracefully and print a more meaningful error 
message 

 

 



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