def test_preprocessing_fn(self):
schema_file = os.path.join(self._testdata_path, 'schema_gen/schema.pbtxt')
schema = io_utils.parse_pbtxt_file(schema_file, schema_pb2.Schema())
feature_spec = taxi_utils._get_raw_feature_spec(schema)
working_dir = self.get_temp_dir()
transform_output_path = os.path.join(working_dir, 'transform_output')
transformed_examples_path = os.path.join(
working_dir, 'transformed_examples')
# Run very simplified version of executor logic.
# TODO(kestert): Replace with tft_unit.assertAnalyzeAndTransformResults.
# Generate legacy `DatasetMetadata` object. Future version of Transform
# will accept the `Schema` proto directly.
legacy_metadata = dataset_metadata.DatasetMetadata(
dataset_schema.from_feature_spec(feature_spec))
decoder = tft.coders.ExampleProtoCoder(legacy_metadata.schema)
with beam.Pipeline() as p:
with tft_beam.Context(temp_dir=os.path.join(working_dir, 'tmp')):
examples = (
p
| 'ReadTrainData' >> beam.io.ReadFromTFRecord(
os.path.join(self._testdata_path, 'csv_example_gen/train/*'),
coder=beam.coders.BytesCoder(),
# TODO(b/114938612): Eventually remove this override.
validate=False)
| 'DecodeTrainData' >> beam.Map(decoder.decode))
(transformed_examples, transformed_metadata), transform_fn = (
(examples, legacy_metadata)
| 'AnalyzeAndTransform' >> tft_beam.AnalyzeAndTransformDataset(
taxi_utils.preprocessing_fn))
# WriteTransformFn writes transform_fn and metadata to subdirectories
# tensorflow_transform.SAVED_MODEL_DIR and
# tensorflow_transform.TRANSFORMED_METADATA_DIR respectively.
# pylint: disable=expression-not-assigned
(transform_fn
| 'WriteTransformFn' >> tft_beam.WriteTransformFn(
transform_output_path))
encoder = tft.coders.ExampleProtoCoder(transformed_metadata.schema)
(transformed_examples
| 'EncodeTrainData' >> beam.Map(encoder.encode)
| 'WriteTrainData' >> beam.io.WriteToTFRecord(
os.path.join(transformed_examples_path,
'train/transformed_exmaples.gz'),
coder=beam.coders.BytesCoder()))
# pylint: enable=expression-not-assigned
# Verify the output matches golden output.
# NOTE: we don't verify that transformed examples match golden output.
expected_transformed_schema = io_utils.parse_pbtxt_file(
os.path.join(
self._testdata_path,
'transform/transform_output/transformed_metadata/schema.pbtxt'),
schema_pb2.Schema())
transformed_schema = io_utils.parse_pbtxt_file(
os.path.join(transform_output_path,
'transformed_metadata/schema.pbtxt'),
schema_pb2.Schema())
self.assertEqual(transformed_schema, expected_transformed_schema)
def compare_anomalies(output_uri: Text, expected_uri: Text) -> bool:
"""Compares anomalies files in output uri and recorded uri.
Args:
output_uri: pipeline output artifact uri.
expected_uri: recorded pipeline output artifact uri.
Returns:
boolean whether anomalies are same.
"""
for dir_name, _, leaf_files in tf.io.gfile.walk(expected_uri):
for leaf_file in leaf_files:
expected_file_name = os.path.join(dir_name, leaf_file)
file_name = os.path.join(
dir_name.replace(expected_uri, output_uri, 1), leaf_file)
anomalies = anomalies_pb2.Anomalies()
io_utils.parse_pbtxt_file(os.path.join(output_uri, file_name),
anomalies)
expected_anomalies = anomalies_pb2.Anomalies()
io_utils.parse_pbtxt_file(
os.path.join(expected_uri, expected_file_name),
expected_anomalies)
if expected_anomalies.anomaly_info != anomalies.anomaly_info:
return False
return True
def annotate_schema(
ignore_features: Parameter[str],
original_schema: InputArtifact[standard_artifacts.Schema],
schema: OutputArtifact[standard_artifacts.Schema],
) -> None: # pytype: disable=invalid-annotation,wrong-arg-types
r"""Updates a schema with additional metadata.
Args:
ignore_features: Newline ('\n') separated list of features to mark as
disabled in the output schema.
original_schema: The Schema artifact to modify.
schema: The output Schema with updates.
"""
schema_file = io_utils.get_only_uri_in_dir(original_schema.uri)
dataset_schema = schema_pb2.Schema()
io_utils.parse_pbtxt_file(schema_file, dataset_schema)
ignore_features = ignore_features.split("\n")
for feature in dataset_schema.feature:
if feature.name in ignore_features:
logging.info("Marking '%s' as DISABLED.", feature.name)
feature.lifecycle_stage = schema_pb2.LifecycleStage.DISABLED
io_utils.write_pbtxt_file(os.path.join(schema.uri, "schema.txt"),
dataset_schema)
def testPreprocessingFn(self):
schema_file = os.path.join(self._testdata_path, 'schema_gen/schema.pbtxt')
schema = io_utils.parse_pbtxt_file(schema_file, schema_pb2.Schema())
feature_spec = taxi_utils._get_raw_feature_spec(schema)
working_dir = self.get_temp_dir()
transform_graph_path = os.path.join(working_dir, 'transform_graph')
transformed_examples_path = os.path.join(
working_dir, 'transformed_examples')
# Run very simplified version of executor logic.
# TODO(kestert): Replace with tft_unit.assertAnalyzeAndTransformResults.
# Generate legacy `DatasetMetadata` object. Future version of Transform
# will accept the `Schema` proto directly.
legacy_metadata = dataset_metadata.DatasetMetadata(
schema_utils.schema_from_feature_spec(feature_spec))
tfxio = tf_example_record.TFExampleRecord(
file_pattern=os.path.join(self._testdata_path,
'csv_example_gen/Split-train/*'),
telemetry_descriptors=['Tests'],
schema=legacy_metadata.schema)
with beam.Pipeline() as p:
with tft_beam.Context(temp_dir=os.path.join(working_dir, 'tmp')):
examples = p | 'ReadTrainData' >> tfxio.BeamSource()
(transformed_examples, transformed_metadata), transform_fn = (
(examples, tfxio.TensorAdapterConfig())
| 'AnalyzeAndTransform' >> tft_beam.AnalyzeAndTransformDataset(
taxi_utils.preprocessing_fn))
# WriteTransformFn writes transform_fn and metadata to subdirectories
# tensorflow_transform.SAVED_MODEL_DIR and
# tensorflow_transform.TRANSFORMED_METADATA_DIR respectively.
# pylint: disable=expression-not-assigned
(transform_fn
|
'WriteTransformFn' >> tft_beam.WriteTransformFn(transform_graph_path))
encoder = tft.coders.ExampleProtoCoder(transformed_metadata.schema)
(transformed_examples
| 'EncodeTrainData' >> beam.Map(encoder.encode)
| 'WriteTrainData' >> beam.io.WriteToTFRecord(
os.path.join(transformed_examples_path,
'Split-train/transformed_examples.gz'),
coder=beam.coders.BytesCoder()))
# pylint: enable=expression-not-assigned
# Verify the output matches golden output.
# NOTE: we don't verify that transformed examples match golden output.
expected_transformed_schema = io_utils.parse_pbtxt_file(
os.path.join(
self._testdata_path,
'transform/transform_graph/transformed_metadata/schema.pbtxt'),
schema_pb2.Schema())
transformed_schema = io_utils.parse_pbtxt_file(
os.path.join(transform_graph_path, 'transformed_metadata/schema.pbtxt'),
schema_pb2.Schema())
# Clear annotations so we only have to test main schema.
transformed_schema.ClearField('annotation')
for feature in transformed_schema.feature:
feature.ClearField('annotation')
self.assertEqual(transformed_schema, expected_transformed_schema)
def testDo(self):
source_data_dir = os.path.join(
os.path.dirname(os.path.dirname(__file__)), 'testdata')
eval_stats_artifact = standard_artifacts.ExampleStatistics()
eval_stats_artifact.uri = os.path.join(source_data_dir, 'statistics_gen')
eval_stats_artifact.split_names = artifact_utils.encode_split_names(
['train', 'eval', 'test'])
schema_artifact = standard_artifacts.Schema()
schema_artifact.uri = os.path.join(source_data_dir, 'schema_gen')
output_data_dir = os.path.join(
os.environ.get('TEST_UNDECLARED_OUTPUTS_DIR', self.get_temp_dir()),
self._testMethodName)
validation_output = standard_artifacts.ExampleAnomalies()
validation_output.uri = os.path.join(output_data_dir, 'output')
input_dict = {
executor.STATISTICS_KEY: [eval_stats_artifact],
executor.SCHEMA_KEY: [schema_artifact],
}
exec_properties = {
# List needs to be serialized before being passed into Do function.
executor.EXCLUDE_SPLITS_KEY:
json_utils.dumps(['test'])
}
output_dict = {
executor.ANOMALIES_KEY: [validation_output],
}
example_validator_executor = executor.Executor()
example_validator_executor.Do(input_dict, output_dict, exec_properties)
self.assertEqual(
artifact_utils.encode_split_names(['train', 'eval']),
validation_output.split_names)
# Check example_validator outputs.
train_anomalies_path = os.path.join(validation_output.uri, 'train',
'anomalies.pbtxt')
eval_anomalies_path = os.path.join(validation_output.uri, 'eval',
'anomalies.pbtxt')
self.assertTrue(tf.io.gfile.exists(train_anomalies_path))
self.assertTrue(tf.io.gfile.exists(eval_anomalies_path))
train_anomalies = io_utils.parse_pbtxt_file(train_anomalies_path,
anomalies_pb2.Anomalies())
eval_anomalies = io_utils.parse_pbtxt_file(eval_anomalies_path,
anomalies_pb2.Anomalies())
self.assertEqual(0, len(train_anomalies.anomaly_info))
self.assertEqual(0, len(eval_anomalies.anomaly_info))
# Assert 'test' split is excluded.
train_file_path = os.path.join(validation_output.uri, 'test',
'anomalies.pbtxt')
self.assertFalse(tf.io.gfile.exists(train_file_path))
def _test_pipeline(pipeline_id: str, run_id: str):
"""Creates test pipeline with pipeline_id and run_id."""
pipeline = pipeline_pb2.Pipeline()
path = os.path.join(
os.path.dirname(__file__), 'testdata', 'sync_pipeline.pbtxt')
io_utils.parse_pbtxt_file(path, pipeline)
pipeline.pipeline_info.id = pipeline_id
runtime_parameter_utils.substitute_runtime_parameter(pipeline, {
'pipeline_run_id': run_id,
})
return pipeline
def _test_pipeline(ir_path: str, pipeline_id: str, run_id: str,
deployment_config: Optional[message.Message]):
"""Creates test pipeline with pipeline_id and run_id."""
pipeline = pipeline_pb2.Pipeline()
io_utils.parse_pbtxt_file(ir_path, pipeline)
pipeline.pipeline_info.id = pipeline_id
runtime_parameter_utils.substitute_runtime_parameter(pipeline, {
constants.PIPELINE_RUN_ID_PARAMETER_NAME: run_id,
})
if deployment_config:
pipeline.deployment_config.Pack(deployment_config)
return pipeline
def tuner_fn(fn_args: FnArgs) -> TunerFnResult:
"""Build the tuner using the KerasTuner API.
Args:
fn_args: Holds args as name/value pairs.
- working_dir: working dir for tuning.
- train_files: List of file paths containing training tf.Example data.
- eval_files: List of file paths containing eval tf.Example data.
- train_steps: number of train steps.
- eval_steps: number of eval steps.
- schema_path: optional schema of the input data.
- transform_graph_path: optional transform graph produced by TFT.
Returns:
A namedtuple contains the following:
- tuner: A BaseTuner that will be used for tuning.
- fit_kwargs: Args to pass to tuner's run_trial function for fitting the
model , e.g., the training and validation dataset. Required
args depend on the above tuner's implementation.
"""
hp = kerastuner.HyperParameters()
# Defines search space.
hp.Choice('learning_rate', [1e-1, 1e-3])
hp.Int('num_layers', 1, 5)
# RandomSearch is a subclass of Keras model Tuner.
tuner = kerastuner.RandomSearch(
_build_keras_model,
max_trials=5,
hyperparameters=hp,
allow_new_entries=False,
objective='val_sparse_categorical_accuracy',
directory=fn_args.working_dir,
project_name='test')
schema = schema_pb2.Schema()
io_utils.parse_pbtxt_file(fn_args.schema_path, schema)
train_dataset = _input_fn(fn_args.train_files, schema)
eval_dataset = _input_fn(fn_args.eval_files, schema)
return TunerFnResult(
tuner=tuner,
fit_kwargs={
'x': train_dataset,
'validation_data': eval_dataset,
'steps_per_epoch': fn_args.train_steps,
'validation_steps': fn_args.eval_steps
})
def testTrainerFn(self):
temp_dir = os.path.join(
os.environ.get('TEST_UNDECLARED_OUTPUTS_DIR', self.get_temp_dir()),
self._testMethodName)
schema_file = os.path.join(self._testdata_path,
'schema_gen/schema.pbtxt')
trainer_fn_args = trainer_executor.TrainerFnArgs(
train_files=os.path.join(
self._testdata_path,
'transform/transformed_examples/train/*.gz'),
transform_output=os.path.join(self._testdata_path,
'transform/transform_output/'),
serving_model_dir=os.path.join(temp_dir, 'serving_model_dir'),
eval_files=os.path.join(
self._testdata_path,
'transform/transformed_examples/eval/*.gz'),
schema_file=schema_file,
train_steps=1,
eval_steps=1,
base_model=os.path.join(self._testdata_path,
'trainer/current/serving_model_dir'),
data_accessor=DataAccessor(tf_dataset_factory=tfxio_utils.
get_tf_dataset_factory_from_artifact(
[standard_artifacts.Examples()],
[]),
record_batch_factory=None,
data_view_decode_fn=None))
schema = io_utils.parse_pbtxt_file(schema_file, schema_pb2.Schema())
training_spec = taxi_utils_bqml.trainer_fn(trainer_fn_args, schema)
estimator = training_spec['estimator']
train_spec = training_spec['train_spec']
eval_spec = training_spec['eval_spec']
eval_input_receiver_fn = training_spec['eval_input_receiver_fn']
self.assertIsInstance(estimator, tf.estimator.Estimator)
self.assertIsInstance(train_spec, tf.estimator.TrainSpec)
self.assertIsInstance(eval_spec, tf.estimator.EvalSpec)
self.assertIsInstance(eval_input_receiver_fn, types.FunctionType)
# Train for one step, then eval for one step.
eval_result, exports = tf.estimator.train_and_evaluate(
estimator, train_spec, eval_spec)
self.assertGreater(eval_result['loss'], 0.0)
self.assertEqual(len(exports), 1)
self.assertGreaterEqual(len(fileio.listdir(exports[0])), 1)
# Export the eval saved model.
eval_savedmodel_path = tfma.export.export_eval_savedmodel(
estimator=estimator,
export_dir_base=path_utils.eval_model_dir(temp_dir),
eval_input_receiver_fn=eval_input_receiver_fn)
self.assertGreaterEqual(len(fileio.listdir(eval_savedmodel_path)), 1)
# Test exported serving graph.
with tf.compat.v1.Session() as sess:
metagraph_def = tf.compat.v1.saved_model.loader.load(
sess, [tf.saved_model.SERVING], exports[0])
self.assertIsInstance(metagraph_def, tf.compat.v1.MetaGraphDef)
def run_fn(fn_args: TrainerFnArgs):
"""Train the model based on given args.
Args:
fn_args: Holds args used to train the model as name/value pairs.
"""
schema = io_utils.parse_pbtxt_file(fn_args.schema_file,
schema_pb2.Schema())
x_train, y_train = _input_fn(fn_args.train_files, fn_args.data_accessor,
schema)
x_eval, y_eval = _input_fn(fn_args.eval_files, fn_args.data_accessor,
schema)
steps_per_epoch = _TRAIN_DATA_SIZE / _TRAIN_BATCH_SIZE
model = MLPClassifier(hidden_layer_sizes=[8, 8, 8],
activation='relu',
solver='adam',
batch_size=_TRAIN_BATCH_SIZE,
learning_rate_init=0.0005,
max_iter=int(fn_args.train_steps / steps_per_epoch),
verbose=True)
model.fit(x_train, y_train)
absl.logging.info(model)
score = model.score(x_eval, y_eval)
absl.logging.info('Accuracy: %f', score)
os.makedirs(fn_args.serving_model_dir)
model_path = os.path.join(fn_args.serving_model_dir, 'model.pkl')
with tf.io.gfile.GFile(model_path, 'wb+') as f:
pickle.dump(model, f)
def Do(self, input_dict: Dict[Text, List[types.Artifact]],
output_dict: Dict[Text, List[types.Artifact]],
exec_properties: Dict[Text, Any]) -> None:
# KerasTuner generates tuning state (e.g., oracle, trials) to working dir.
working_dir = self._get_tmp_dir()
train_path = artifact_utils.get_split_uri(input_dict['examples'], 'train')
eval_path = artifact_utils.get_split_uri(input_dict['examples'], 'eval')
schema_file = io_utils.get_only_uri_in_dir(
artifact_utils.get_single_uri(input_dict['schema']))
schema = io_utils.parse_pbtxt_file(schema_file, schema_pb2.Schema())
tuner_fn = self._GetTunerFn(exec_properties)
tuner_spec = tuner_fn(working_dir, io_utils.all_files_pattern(train_path),
io_utils.all_files_pattern(eval_path), schema)
tuner = tuner_spec.tuner
tuner.search_space_summary()
# TODO(jyzhao): assert v2 behavior as KerasTuner doesn't work in v1.
# TODO(jyzhao): make epochs configurable.
tuner.search(
tuner_spec.train_dataset,
epochs=5,
validation_data=tuner_spec.eval_dataset)
tuner.results_summary()
best_hparams = tuner.oracle.get_best_trials(
1)[0].hyperparameters.get_config()
best_hparams_path = os.path.join(
artifact_utils.get_single_uri(output_dict['study_best_hparams_path']),
_DEFAULT_FILE_NAME)
io_utils.write_string_file(best_hparams_path, json.dumps(best_hparams))
absl.logging.info('Best HParams is written to %s.' % best_hparams_path)
def test_trainer_fn(self):
temp_dir = os.path.join(
os.environ.get('TEST_UNDECLARED_OUTPUTS_DIR', self.get_temp_dir()),
self._testMethodName)
schema_file = os.path.join(self._testdata_path, 'schema_gen/schema.pbtxt')
hparams = tf.contrib.training.HParams(
train_files=os.path.join(temp_dir, 'train_files'),
transform_output=os.path.join(self._testdata_path,
'transform/transform_output/'),
output_dir=os.path.join(temp_dir, 'output_dir'),
serving_model_dir=os.path.join(temp_dir, 'serving_model_dir'),
eval_files=os.path.join(temp_dir, 'eval_files'),
schema_file=schema_file,
train_steps=10001,
eval_steps=5000,
verbosity='INFO',
warm_start_from=os.path.join(temp_dir, 'serving_model_dir'))
schema = io_utils.parse_pbtxt_file(schema_file, schema_pb2.Schema())
training_spec = taxi_utils.trainer_fn(hparams, schema)
self.assertIsInstance(training_spec['estimator'],
tf.estimator.DNNLinearCombinedClassifier)
self.assertIsInstance(training_spec['train_spec'], tf.estimator.TrainSpec)
self.assertIsInstance(training_spec['eval_spec'], tf.estimator.EvalSpec)
self.assertIsInstance(training_spec['eval_input_receiver_fn'],
types.FunctionType)
def run_fn(fn_args: executor.TrainerFnArgs):
"""Train the model based on given args.
Args:
fn_args: Holds args used to train the model as name/value pairs.
"""
schema = io_utils.parse_pbtxt_file(fn_args.schema_file,
schema_pb2.Schema())
training_spec = trainer_fn(fn_args, schema)
# Train the model
absl.logging.info('Training model.')
tf.estimator.train_and_evaluate(training_spec['estimator'],
training_spec['train_spec'],
training_spec['eval_spec'])
absl.logging.info('Training complete. Model written to %s',
fn_args.serving_model_dir)
# Export an eval savedmodel for TFMA
absl.logging.info('Exporting eval_savedmodel for TFMA.')
tfma.export.export_eval_savedmodel(
estimator=training_spec['estimator'],
export_dir_base=fn_args.eval_model_dir,
eval_input_receiver_fn=training_spec['eval_input_receiver_fn'])
absl.logging.info('Exported eval_savedmodel to %s.',
fn_args.eval_model_dir)
def run_fn(fn_args: executor.TrainerFnArgs):
"""Train the model based on given args.
Args:
fn_args: Holds args used to train the model as name/value pairs.
"""
schema = io_utils.parse_pbtxt_file(fn_args.schema_file,
schema_pb2.Schema())
training_spec = trainer_fn(fn_args, schema)
# Train the model
absl.logging.info('Training model.')
tf.estimator.train_and_evaluate(training_spec['estimator'],
training_spec['train_spec'],
training_spec['eval_spec'])
absl.logging.info('Training complete. Model written to %s',
fn_args.serving_model_dir)
# Export an eval savedmodel for TFMA
# NOTE: When trained in distributed training cluster, eval_savedmodel must be
# exported only by the chief worker.
absl.logging.info('Exporting eval_savedmodel for TFMA.')
tfma.export.export_eval_savedmodel(
estimator=training_spec['estimator'],
export_dir_base=fn_args.eval_model_dir,
eval_input_receiver_fn=training_spec['eval_input_receiver_fn'])
# Simulate writing a log to the path given by fn_args
io_utils.write_string_file(
os.path.join(fn_args.model_run_dir, 'fake_log.txt'), '')
absl.logging.info('Exported eval_savedmodel to %s.',
fn_args.eval_model_dir)
def test_trainer_fn(self):
temp_dir = os.path.join(
os.environ.get('TEST_UNDECLARED_OUTPUTS_DIR', self.get_temp_dir()),
self._testMethodName)
schema_file = os.path.join(self._testdata_path,
'schema_gen/schema.pbtxt')
hparams = tf.contrib.training.HParams(
train_files=os.path.join(temp_dir, 'train_files'),
transform_output=os.path.join(self._testdata_path,
'transform/transform_output/'),
output_dir=os.path.join(temp_dir, 'output_dir'),
serving_model_dir=os.path.join(temp_dir, 'serving_model_dir'),
eval_files=os.path.join(temp_dir, 'eval_files'),
schema_file=schema_file,
train_steps=10001,
eval_steps=5000,
verbosity='INFO',
warm_start_from=os.path.join(temp_dir, 'serving_model_dir'))
schema = io_utils.parse_pbtxt_file(schema_file, schema_pb2.Schema())
training_spec = taxi_utils.trainer_fn(hparams, schema)
self.assertIsInstance(training_spec['estimator'],
tf.estimator.DNNLinearCombinedClassifier)
self.assertIsInstance(training_spec['train_spec'],
tf.estimator.TrainSpec)
self.assertIsInstance(training_spec['eval_spec'],
tf.estimator.EvalSpec)
self.assertIsInstance(training_spec['eval_input_receiver_fn'],
types.FunctionType)
def run_fn(fn_args):
"""Train the model based on given args.
Args:
fn_args: Holds args used to train the model as name/value pairs.
"""
schema = io_utils.parse_pbtxt_file(fn_args.schema_file,
schema_pb2.Schema())
train_and_eval_spec = _create_train_and_eval_spec(fn_args, schema)
# Train the model
logging.info('Training model.')
tf.estimator.train_and_evaluate(train_and_eval_spec['estimator'],
train_and_eval_spec['train_spec'],
train_and_eval_spec['eval_spec'])
logging.info('Training complete. Model written to %s',
fn_args.serving_model_dir)
# Export an eval savedmodel for TFMA
# NOTE: When trained in distributed training cluster, eval_savedmodel must be
# exported only by the chief worker.
logging.info('Exporting eval_savedmodel for TFMA.')
tfma.export.export_eval_savedmodel(
estimator=train_and_eval_spec['estimator'],
export_dir_base=fn_args.eval_model_dir,
eval_input_receiver_fn=train_and_eval_spec['eval_input_receiver_fn'])
logging.info('Exported eval_savedmodel to %s.', fn_args.eval_model_dir)
def train_custom_model(
fn_args: TrainerFnArgs,
inputs: Dict[str, Feature],
outputs: Dict[str, Feature],
custom_model: Callable[
[
TrainerFnArgs,
tf.data.Dataset,
tf.data.Dataset,
],
Any,
],
batch_size: int = DEFAULT_BATCH_SIZE,
) -> Callable[[TrainerFnArgs], None]:
if fn_args.transform_output is None:
tf_transform_output = None
schema = io_utils.parse_pbtxt_file(fn_args.schema_file, schema_pb2.Schema())
feature_spec = schema_utils.schema_as_feature_spec(schema).feature_spec
for output_name in Features(outputs).names():
feature_spec.pop(output_name)
def transform_features(serialized_tf_examples):
return tf.io.parse_example(serialized_tf_examples, feature_spec)
else:
tf_transform_output = tft.TFTransformOutput(fn_args.transform_output)
tft_layer = tf_transform_output.transform_features_layer()
schema = tf_transform_output.transformed_metadata.schema
feature_spec = tf_transform_output.raw_feature_spec()
for output_name in Features(outputs).names():
feature_spec.pop(output_name)
def transform_features(serialized_tf_examples):
parsed_features = tf.io.parse_example(serialized_tf_examples, feature_spec)
return tft_layer(parsed_features)
def build_dataset(files):
return (
fn_args.data_accessor.tf_dataset_factory(
files,
dataset_options.TensorFlowDatasetOptions(batch_size),
schema,
)
.map(
lambda batch: (
Features(inputs).map(lambda name, _: batch[name]),
Features(outputs).map(lambda name, _: batch[name]),
)
)
.repeat()
)
distributed_strategy = tf.distribute.MirroredStrategy()
with distributed_strategy.scope():
custom_model(
fn_args=fn_args,
train_dataset=build_dataset(fn_args.train_files),
eval_dataset=build_dataset(fn_args.eval_files),
transform_features=transform_features,
)
def test_trainer_fn(self):
temp_dir = os.path.join(
os.environ.get('TEST_UNDECLARED_OUTPUTS_DIR', self.get_temp_dir()),
self._testMethodName)
schema_file = os.path.join(self._testdata_path,
'schema_gen/schema.pbtxt')
output_dir = os.path.join(temp_dir, 'output_dir')
hparams = tf.contrib.training.HParams(
train_files=os.path.join(
self._testdata_path,
'transform/transformed_examples/train/*.gz'),
transform_output=os.path.join(self._testdata_path,
'transform/transform_output/'),
output_dir=output_dir,
serving_model_dir=os.path.join(temp_dir, 'serving_model_dir'),
eval_files=os.path.join(
self._testdata_path,
'transform/transformed_examples/eval/*.gz'),
schema_file=schema_file,
train_steps=1,
eval_steps=1,
verbosity='INFO',
warm_start_from=os.path.join(self._testdata_path,
'trainer/current/serving_model_dir'))
schema = io_utils.parse_pbtxt_file(schema_file, schema_pb2.Schema())
training_spec = taxi_utils.trainer_fn(hparams, schema)
estimator = training_spec['estimator']
train_spec = training_spec['train_spec']
eval_spec = training_spec['eval_spec']
eval_input_receiver_fn = training_spec['eval_input_receiver_fn']
self.assertIsInstance(estimator,
tf.estimator.DNNLinearCombinedClassifier)
self.assertIsInstance(train_spec, tf.estimator.TrainSpec)
self.assertIsInstance(eval_spec, tf.estimator.EvalSpec)
self.assertIsInstance(eval_input_receiver_fn, types.FunctionType)
# Train for one step, then eval for one step.
eval_result, exports = tf.estimator.train_and_evaluate(
estimator, train_spec, eval_spec)
self.assertGreater(eval_result['loss'], 0.0)
self.assertEqual(len(exports), 1)
self.assertGreaterEqual(len(tf.gfile.ListDirectory(exports[0])), 1)
# Export the eval saved model.
eval_savedmodel_path = tfma.export.export_eval_savedmodel(
estimator=estimator,
export_dir_base=path_utils.eval_model_dir(output_dir),
eval_input_receiver_fn=eval_input_receiver_fn)
self.assertGreaterEqual(
len(tf.gfile.ListDirectory(eval_savedmodel_path)), 1)
# Test exported serving graph.
with tf.Session() as sess:
metagraph_def = tf.compat.v1.saved_model.loader.load(
sess, [tf.saved_model.tag_constants.SERVING], exports[0])
self.assertIsInstance(metagraph_def, tf.MetaGraphDef)
def run_fn(fn_args: FnArgs):
"""Train the model based on given args.
Args:
fn_args: Holds args used to train the model as name/value pairs.
"""
schema = io_utils.parse_pbtxt_file(fn_args.schema_file,
schema_pb2.Schema())
x_train, y_train = _input_fn(fn_args.train_files, fn_args.data_accessor,
schema)
x_eval, y_eval = _input_fn(fn_args.eval_files, fn_args.data_accessor,
schema)
steps_per_epoch = _TRAIN_DATA_SIZE / _TRAIN_BATCH_SIZE
estimator = MLPClassifier(hidden_layer_sizes=[8, 8, 8],
activation='relu',
solver='adam',
batch_size=_TRAIN_BATCH_SIZE,
learning_rate_init=0.0005,
max_iter=int(fn_args.train_steps /
steps_per_epoch),
verbose=True)
# Create a pipeline that standardizes the input data before passing it to an
# estimator. Once the scaler is fit, it will use the same mean and stdev to
# transform inputs at both training and serving time.
model = Pipeline([
('scaler', StandardScaler()),
('estimator', estimator),
])
model.feature_keys = _FEATURE_KEYS
model.label_key = _LABEL_KEY
model.fit(x_train, y_train)
absl.logging.info(model)
score = model.score(x_eval, y_eval)
absl.logging.info('Accuracy: %f', score)
# Export the model as a pickle named model.pkl. AI Platform Prediction expects
# sklearn model artifacts to follow this naming convention.
os.makedirs(fn_args.serving_model_dir)
model_path = os.path.join(fn_args.serving_model_dir, 'model.pkl')
with fileio.open(model_path, 'wb+') as f:
pickle.dump(model, f)
def run_fn(fn_args: TrainerFnArgs):
schema = io_utils.parse_pbtxt_file(fn_args.schema_file,
schema_pb2.Schema())
x_train, y_train = _input_fn(fn_args.train_files, fn_args.data_accessor,
schema)
cls = SGDClassifier(loss='log',
penalty='elasticnet',
learning_rate='adaptive',
eta0=2,
verbose=1,
tol=1e-2)
count_vectorizer = CountVectorizer()
pipeline = Pipeline([('vect', count_vectorizer), ('cls', cls)])
grid = {
'cls__alpha': [0.01, 0.5, 0.99, 2, 5],
'cls__l1_ratio': [0.01, 0.5, 0.99]
}
grid_search_cv = GridSearchCV(pipeline, param_grid=grid, scoring='roc_auc')
print(x_train.shape)
print(x_train[0:2, :])
# ravel here
# model = grid_search_cv.fit(X=x_train.ravel(), y=y_train)
model = pipeline.fit(X=x_train.ravel(), y=y_train)
x_eval, y_eval = _input_fn(fn_args.eval_files, fn_args.data_accessor,
schema)
score = model.score(x_eval.ravel(), y_eval)
absl.logging.info('Accuracy: %f', score)
os.makedirs(fn_args.serving_model_dir)
model_path = os.path.join(fn_args.serving_model_dir, 'model.pkl')
with fileio.open(model_path, 'wb+') as f:
pickle.dump(model, f)
def run_fn(fn_args: executor.TrainerFnArgs):
"""Train the model based on given args.
Args:
fn_args: Holds args used to train the model as name/value pairs.
"""
schema = io_utils.parse_pbtxt_file(fn_args.schema_file,
schema_pb2.Schema())
training_spec = _trainer_fn(fn_args, schema)
# Train the model
absl.logging.info('Training model.')
tf.estimator.train_and_evaluate(training_spec['estimator'],
training_spec['train_spec'],
training_spec['eval_spec'])
absl.logging.info('Training complete. Model written to %s',
fn_args.serving_model_dir)
# Export an eval savedmodel for TFMA
# NOTE: When trained in distributed training cluster, eval_savedmodel must be
# exported only by the chief worker (check TF_CONFIG).
absl.logging.info('Exporting eval_savedmodel for TFMA.')
eval_export_dir = path_utils.eval_model_dir(fn_args.model_run_dir)
tfma.export.export_eval_savedmodel(
estimator=training_spec['estimator'],
export_dir_base=eval_export_dir,
eval_input_receiver_fn=training_spec['eval_input_receiver_fn'])
absl.logging.info('Exported eval_savedmodel to %s.',
fn_args.eval_model_dir)
# TODO(b/160795287): Deprecate estimator based executor.
# Copy serving and eval model from model_run to model artifact directory.
serving_source = path_utils.serving_model_path(fn_args.model_run_dir)
io_utils.copy_dir(serving_source, fn_args.serving_model_dir)
absl.logging.info('Serving model copied to: %s.',
fn_args.serving_model_dir)
eval_source = path_utils.eval_model_path(fn_args.model_run_dir)
io_utils.copy_dir(eval_source, fn_args.eval_model_dir)
absl.logging.info('Eval model copied to: %s.', fn_args.eval_model_dir)
def run_fn(fn_args):
schema = io_utils.parse_pbtxt_file(fn_args.schema_file,
schema_pb2.Schema())
train_and_eval_spec = _create_train_and_eval_spec(fn_args, schema)
logging.info('Training model.')
tf.estimator.train_and_evaluate(train_and_eval_spec['estimator'],
train_and_eval_spec['train_spec'],
train_and_eval_spec['eval_spec'])
logging.info('Training complete. Model written to %s',
fn_args.serving_model_dir)
logging.info('Exporting eval_savedmodel for TFMA.')
tfma.export.export_eval_savedmodel(
estimator=train_and_eval_spec['estimator'],
export_dir_base=fn_args.eval_model_dir,
eval_input_receiver_fn=train_and_eval_spec['eval_input_receiver_fn'])
logging.info('Exported eval_savedmodel to %s.', fn_args.eval_model_dir)
def testDo(self):
source_data_dir = os.path.join(
os.path.dirname(os.path.dirname(__file__)), 'testdata')
eval_stats_artifact = standard_artifacts.ExampleStatistics()
eval_stats_artifact.uri = os.path.join(source_data_dir,
'statistics_gen')
eval_stats_artifact.split_names = artifact_utils.encode_split_names(
['eval'])
schema_artifact = standard_artifacts.Schema()
schema_artifact.uri = os.path.join(source_data_dir, 'schema_gen')
output_data_dir = os.path.join(
os.environ.get('TEST_UNDECLARED_OUTPUTS_DIR', self.get_temp_dir()),
self._testMethodName)
validation_output = standard_artifacts.ExampleAnomalies()
validation_output.uri = os.path.join(output_data_dir, 'output')
input_dict = {
executor.STATISTICS_KEY: [eval_stats_artifact],
executor.SCHEMA_KEY: [schema_artifact],
}
output_dict = {
executor.ANOMALIES_KEY: [validation_output],
}
exec_properties = {}
example_validator_executor = executor.Executor()
example_validator_executor.Do(input_dict, output_dict, exec_properties)
self.assertEqual(['anomalies.pbtxt'],
tf.io.gfile.listdir(validation_output.uri))
anomalies = io_utils.parse_pbtxt_file(
os.path.join(validation_output.uri, 'anomalies.pbtxt'),
anomalies_pb2.Anomalies())
self.assertNotEqual(0, len(anomalies.anomaly_info))
def test_do(self):
source_data_dir = os.path.join(
os.path.dirname(os.path.dirname(__file__)), 'testdata')
eval_stats_artifact = types.Artifact('ExampleStatsPath', split='eval')
eval_stats_artifact.uri = os.path.join(source_data_dir,
'statistics_gen/eval/')
schema_artifact = standard_artifacts.Schema()
schema_artifact.uri = os.path.join(source_data_dir, 'schema_gen/')
output_data_dir = os.path.join(
os.environ.get('TEST_UNDECLARED_OUTPUTS_DIR', self.get_temp_dir()),
self._testMethodName)
validation_output = standard_artifacts.ExampleValidationResult()
validation_output.uri = os.path.join(output_data_dir, 'output')
input_dict = {
'stats': [eval_stats_artifact],
'schema': [schema_artifact],
}
output_dict = {
'output': [validation_output],
}
exec_properties = {}
example_validator_executor = executor.Executor()
example_validator_executor.Do(input_dict, output_dict, exec_properties)
self.assertEqual(['anomalies.pbtxt'],
tf.gfile.ListDirectory(validation_output.uri))
anomalies = io_utils.parse_pbtxt_file(
os.path.join(validation_output.uri, 'anomalies.pbtxt'),
anomalies_pb2.Anomalies())
self.assertNotEqual(0, len(anomalies.anomaly_info))
def test_do(self):
source_data_dir = os.path.join(
os.path.dirname(os.path.dirname(__file__)), 'testdata')
eval_stats_artifact = types.TfxType('ExampleStatsPath', split='eval')
eval_stats_artifact.uri = os.path.join(source_data_dir,
'statistics_gen/eval/')
schema_artifact = types.TfxType('SchemaPath')
schema_artifact.uri = os.path.join(source_data_dir, 'schema_gen/')
output_data_dir = os.path.join(
os.environ.get('TEST_UNDECLARED_OUTPUTS_DIR', self.get_temp_dir()),
self._testMethodName)
validation_output = types.TfxType('ExampleValidationPath')
validation_output.uri = os.path.join(output_data_dir, 'output')
input_dict = {
'stats': [eval_stats_artifact],
'schema': [schema_artifact],
}
output_dict = {
'output': [validation_output],
}
exec_properties = {}
example_validator_executor = executor.Executor()
example_validator_executor.Do(input_dict, output_dict, exec_properties)
self.assertEqual(['anomalies.pbtxt'],
tf.gfile.ListDirectory(validation_output.uri))
anomalies = io_utils.parse_pbtxt_file(
os.path.join(validation_output.uri, 'anomalies.pbtxt'),
anomalies_pb2.Anomalies())
self.assertNotEqual(0, len(anomalies.anomaly_info))
def Do(self, input_dict: Dict[Text, List[types.Artifact]],
output_dict: Dict[Text, List[types.Artifact]],
exec_properties: Dict[Text, Any]) -> None:
"""Uses a user-supplied tf.estimator to train a TensorFlow model locally.
The Trainer Executor invokes a training_fn callback function provided by
the user via the module_file parameter. With the tf.estimator returned by
this function, the Trainer Executor then builds a TensorFlow model using the
user-provided tf.estimator.
Args:
input_dict: Input dict from input key to a list of ML-Metadata Artifacts.
- examples: Examples used for training, must include 'train' and 'eval'
splits.
- transform_output: Optional input transform graph.
- schema: Schema of the data.
output_dict: Output dict from output key to a list of Artifacts.
- output: Exported model.
exec_properties: A dict of execution properties.
- train_args: JSON string of trainer_pb2.TrainArgs instance, providing
args for training.
- eval_args: JSON string of trainer_pb2.EvalArgs instance, providing
args for eval.
- module_file: Python module file containing UDF model definition.
- warm_starting: Whether or not we need to do warm starting.
- warm_start_from: Optional. If warm_starting is True, this is the
directory to find previous model to warm start on.
Returns:
None
Raises:
ValueError: When neither or both of 'module_file' and 'trainer_fn'
are present in 'exec_properties'.
"""
self._log_startup(input_dict, output_dict, exec_properties)
# TODO(zhitaoli): Deprecate this in a future version.
if exec_properties.get('custom_config', None):
cmle_args = exec_properties.get('custom_config',
{}).get('cmle_training_args')
if cmle_args:
executor_class_path = '.'.join([Executor.__module__, Executor.__name__])
absl.logging.warn(
'Passing \'cmle_training_args\' to trainer directly is deprecated, '
'please use extension executor at '
'tfx.extensions.google_cloud_ai_platform.trainer.executor instead')
return runner.start_cmle_training(input_dict, output_dict,
exec_properties, executor_class_path,
cmle_args)
trainer_fn = self._GetTrainerFn(exec_properties)
# Set up training parameters
train_files = [
_all_files_pattern(
artifact_utils.get_split_uri(input_dict['examples'], 'train'))
]
transform_output = artifact_utils.get_single_uri(
input_dict['transform_output']) if input_dict.get(
'transform_output', None) else None
eval_files = [
_all_files_pattern(
artifact_utils.get_split_uri(input_dict['examples'], 'eval'))
]
schema_file = io_utils.get_only_uri_in_dir(
artifact_utils.get_single_uri(input_dict['schema']))
train_args = trainer_pb2.TrainArgs()
eval_args = trainer_pb2.EvalArgs()
json_format.Parse(exec_properties['train_args'], train_args)
json_format.Parse(exec_properties['eval_args'], eval_args)
# https://github.com/tensorflow/tfx/issues/45: Replace num_steps=0 with
# num_steps=None. Conversion of the proto to python will set the default
# value of an int as 0 so modify the value here. Tensorflow will raise an
# error if num_steps <= 0.
train_steps = train_args.num_steps or None
eval_steps = eval_args.num_steps or None
output_path = artifact_utils.get_single_uri(output_dict['output'])
serving_model_dir = path_utils.serving_model_dir(output_path)
eval_model_dir = path_utils.eval_model_dir(output_path)
# Assemble warm start path if needed.
warm_start_from = None
if exec_properties.get('warm_starting') and exec_properties.get(
'warm_start_from'):
previous_model_dir = os.path.join(exec_properties['warm_start_from'],
path_utils.SERVING_MODEL_DIR)
if previous_model_dir and tf.io.gfile.exists(
os.path.join(previous_model_dir, self._CHECKPOINT_FILE_NAME)):
warm_start_from = previous_model_dir
# TODO(b/126242806) Use PipelineInputs when it is available in third_party.
hparams = _HParamWrapper(
# A list of uris for train files.
train_files=train_files,
# An optional single uri for transform graph produced by TFT. Will be
# None if not specified.
transform_output=transform_output,
# A single uri for the output directory of the serving model.
serving_model_dir=serving_model_dir,
# A list of uris for eval files.
eval_files=eval_files,
# A single uri for schema file.
schema_file=schema_file,
# Number of train steps.
train_steps=train_steps,
# Number of eval steps.
eval_steps=eval_steps,
# A single uri for the model directory to warm start from.
warm_start_from=warm_start_from)
schema = io_utils.parse_pbtxt_file(schema_file, schema_pb2.Schema())
training_spec = trainer_fn(hparams, schema)
# Train the model
absl.logging.info('Training model.')
tf.estimator.train_and_evaluate(training_spec['estimator'],
training_spec['train_spec'],
training_spec['eval_spec'])
absl.logging.info('Training complete. Model written to %s',
serving_model_dir)
# Export an eval savedmodel for TFMA
absl.logging.info('Exporting eval_savedmodel for TFMA.')
tfma.export.export_eval_savedmodel(
estimator=training_spec['estimator'],
export_dir_base=eval_model_dir,
eval_input_receiver_fn=training_spec['eval_input_receiver_fn'])
absl.logging.info('Exported eval_savedmodel to %s.', eval_model_dir)
def load_proto_from_text(
self, file_name: Text,
proto_message: message.Message) -> message.Message:
"""Loads proto message from serialized text."""
path = os.path.join(os.path.dirname(__file__), 'testdata', file_name)
return io_utils.parse_pbtxt_file(path, proto_message)
def Do(self, input_dict: Dict[Text, List[types.Artifact]],
output_dict: Dict[Text, List[types.Artifact]],
exec_properties: Dict[Text, Any]) -> None:
"""Get human review result on a model through Slack channel.
Args:
input_dict: Input dict from input key to a list of artifacts, including:
- model_export: exported model from trainer.
- model_blessing: model blessing path from model_validator.
output_dict: Output dict from key to a list of artifacts, including:
- slack_blessing: model blessing result.
exec_properties: A dict of execution properties, including:
- slack_token: Token used to setup connection with slack server.
- slack_channel_id: The id of the Slack channel to send and receive
messages.
- timeout_sec: How long do we wait for response, in seconds.
Returns:
None
Raises:
TimeoutError:
When there is no decision made within timeout_sec.
ConnectionError:
When connection to slack server cannot be established.
"""
self._log_startup(input_dict, output_dict, exec_properties)
transform_graph_uri = artifact_utils.get_single_uri(
input_dict[TRANSFORM_GRAPH_KEY])
temp_path = os.path.join(transform_graph_uri, _TEMP_DIR_IN_TRANSFORM_OUTPUT)
# transformed_schema_file = os.path.join(
# transform_graph_uri,
# tft.TFTransformOutput.TRANSFORMED_METADATA_DIR,
# 'schema.pbtxt'
# )
# transformed_schema_proto = io_utils.parse_pbtxt_file(
# transformed_schema_file,
# schema_pb2.Schema()
# )
transformed_train_output = artifact_utils.get_split_uri(
output_dict[TRANSFORMED_EXAMPLES_KEY], 'train')
transformed_eval_output = artifact_utils.get_split_uri(
output_dict[TRANSFORMED_EXAMPLES_KEY], 'eval')
tf_transform_output = tft.TFTransformOutput(transform_graph_uri)
# transform_output_dataset_metadata = dataset_metadata.DatasetMetadata(
# schema=transformed_schema_proto
# )
# transform_fn = (tf_transform_output.transform_raw_features, transform_output_dataset_metadata)
# feature_spec = schema_utils.schema_as_feature_spec(schema_proto).feature_spec
schema_file = io_utils.get_only_uri_in_dir(
artifact_utils.get_single_uri(input_dict[SCHEMA_KEY]))
schema_proto = io_utils.parse_pbtxt_file(schema_file, schema_pb2.Schema())
transform_input_dataset_metadata = dataset_metadata.DatasetMetadata(
schema_proto
)
train_data_uri = artifact_utils.get_split_uri(
input_dict[EXAMPLES_KEY],
'train'
)
eval_data_uri = artifact_utils.get_split_uri(
input_dict[EXAMPLES_KEY],
'eval'
)
analyze_data_paths = [io_utils.all_files_pattern(train_data_uri)]
transform_data_paths = [
io_utils.all_files_pattern(train_data_uri),
io_utils.all_files_pattern(eval_data_uri),
]
materialize_output_paths = [
os.path.join(transformed_train_output, _DEFAULT_TRANSFORMED_EXAMPLES_PREFIX),
os.path.join(transformed_eval_output, _DEFAULT_TRANSFORMED_EXAMPLES_PREFIX)
]
transform_data_list = self._MakeDatasetList(
transform_data_paths,
materialize_output_paths
)
analyze_data_list = self._MakeDatasetList(
analyze_data_paths,
)
with self._make_beam_pipeline() as pipeline:
with tft_beam.Context(temp_dir=temp_path):
# NOTE: Unclear if there is a difference between input_dataset_metadata
# and transform_input_dataset_metadata. Look at Transform executor.
decode_fn = tft.coders.ExampleProtoCoder(schema_proto, serialized=True).decode
input_analysis_data = {}
for dataset in analyze_data_list:
infix = 'AnalysisIndex{}'.format(dataset.index)
dataset.serialized = (
pipeline
| 'ReadDataset[{}]'.format(infix) >> self._ReadExamples(
dataset, transform_input_dataset_metadata))
dataset.decoded = (
dataset.serialized
| 'Decode[{}]'.format(infix)
>> self._DecodeInputs(decode_fn))
input_analysis_data[dataset.dataset_key] = dataset.decoded
if not hasattr(tft_beam.analyzer_cache, 'DatasetKey'):
input_analysis_data = (
[
dataset for dataset in input_analysis_data.values()
if dataset is not None
]
| 'FlattenAnalysisDatasetsBecauseItIsRequired' >>
beam.Flatten(pipeline=pipeline))
transform_fn = (
(input_analysis_data, transform_input_dataset_metadata)
| 'Analyze' >> tft_beam.AnalyzeDataset(
tf_transform_output.transform_raw_features, pipeline=pipeline))
for dataset in transform_data_list:
infix = 'TransformIndex{}'.format(dataset.index)
dataset.serialized = (
pipeline
| 'ReadDataset[{}]'.format(infix) >> self._ReadExamples(
dataset, transform_input_dataset_metadata))
dataset.decoded = (
dataset.serialized
| 'Decode[{}]'.format(infix)
>> self._DecodeInputs(decode_fn))
dataset.transformed, metadata = (
((dataset.decoded, transform_input_dataset_metadata), transform_fn)
| 'Transform[{}]'.format(infix) >> tft_beam.TransformDataset())
dataset.transformed_and_serialized = (
dataset.transformed
| 'EncodeAndSerialize[{}]'.format(infix)
>> beam.ParDo(self._EncodeAsSerializedExamples(), _GetSchemaProto(metadata)))
_ = (
dataset.transformed_and_serialized
| 'Materialize[{}]'.format(infix) >> self._WriteExamples(dataset.materialize_output_path))
def Do(self, input_dict, output_dict, exec_properties):
"""Runs trainer job the given input.
Args:
input_dict: Input dict from input key to a list of Artifacts.
- transformed_examples: Transformed example.
- transform_output: Input transform graph.
- schema: Schema of the data.
output_dict: Output dict from output key to a list of Artifacts.
- output: Exported model.
exec_properties: A dict of execution properties.
- train_args: JSON string of trainer_pb2.TrainArgs instance, providing
args for training.
- eval_args: JSON string of trainer_pb2.EvalArgs instance, providing
args for eval.
- module_file: Python module file containing UDF model definition.
- warm_starting: Whether or not we need to do warm starting.
- warm_start_from: Optional. If warm_starting is True, this is the
directory to find previous model to warm start on.
Returns:
None
"""
self._log_startup(input_dict, output_dict, exec_properties)
# TODO(khaas): Move this to tfx/extensions.
if exec_properties.get('custom_config', None):
cmle_args = exec_properties.get('custom_config',
{}).get('cmle_training_args')
if cmle_args:
return cmle_runner.start_cmle_training(input_dict, output_dict,
exec_properties,
cmle_args)
trainer_fn = io_utils.import_func(exec_properties['module_file'],
'trainer_fn')
# Set up training parameters
train_files = [
_all_files_pattern(
types.get_split_uri(input_dict['transformed_examples'],
'train'))
]
transform_output = types.get_single_uri(input_dict['transform_output'])
eval_files = _all_files_pattern(
types.get_split_uri(input_dict['transformed_examples'], 'eval'))
schema_file = io_utils.get_only_uri_in_dir(
types.get_single_uri(input_dict['schema']))
train_args = trainer_pb2.TrainArgs()
eval_args = trainer_pb2.EvalArgs()
json_format.Parse(exec_properties['train_args'], train_args)
json_format.Parse(exec_properties['eval_args'], eval_args)
# https://github.com/tensorflow/tfx/issues/45: Replace num_steps=0 with
# num_steps=None. Conversion of the proto to python will set the default
# value of an int as 0 so modify the value here. Tensorflow will raise an
# error if num_steps <= 0.
train_steps = train_args.num_steps or None
eval_steps = eval_args.num_steps or None
output_path = types.get_single_uri(output_dict['output'])
serving_model_dir = path_utils.serving_model_dir(output_path)
eval_model_dir = path_utils.eval_model_dir(output_path)
# Assemble warm start path if needed.
warm_start_from = None
if exec_properties.get('warm_starting') and exec_properties.get(
'warm_start_from'):
previous_model_dir = os.path.join(
exec_properties['warm_start_from'],
path_utils.SERVING_MODEL_DIR)
if previous_model_dir and tf.gfile.Exists(
os.path.join(previous_model_dir,
self._CHECKPOINT_FILE_NAME)):
warm_start_from = previous_model_dir
# TODO(b/126242806) Use PipelineInputs when it is available in third_party.
hparams = tf.contrib.training.HParams(
train_files=train_files,
transform_output=transform_output,
output_dir=output_path,
serving_model_dir=serving_model_dir,
eval_files=eval_files,
schema_file=schema_file,
train_steps=train_steps,
eval_steps=eval_steps,
warm_start_from=warm_start_from)
schema = io_utils.parse_pbtxt_file(schema_file, schema_pb2.Schema())
training_spec = trainer_fn(hparams, schema)
# Train the model
tf.logging.info('Training model.')
tf.estimator.train_and_evaluate(training_spec['estimator'],
training_spec['train_spec'],
training_spec['eval_spec'])
tf.logging.info('Training complete. Model written to %s',
serving_model_dir)
# Export an eval savedmodel for TFMA
tf.logging.info('Exporting eval_savedmodel for TFMA.')
tfma.export.export_eval_savedmodel(
estimator=training_spec['estimator'],
export_dir_base=eval_model_dir,
eval_input_receiver_fn=training_spec['eval_input_receiver_fn'])
tf.logging.info('Exported eval_savedmodel to %s.', eval_model_dir)
def get_proto_from_test_data(filename: Text,
pb_message: message.Message) -> message.Message:
"""Helper function that gets proto from testdata."""
filepath = os.path.join(os.path.dirname(__file__), 'testdata', filename)
return io_utils.parse_pbtxt_file(filepath, pb_message)
def test_preprocessing_fn(self):
schema_file = os.path.join(self._testdata_path,
'schema_gen/schema.pbtxt')
schema = io_utils.parse_pbtxt_file(schema_file, schema_pb2.Schema())
feature_spec = taxi_utils._get_raw_feature_spec(schema)
working_dir = self.get_temp_dir()
transform_output_path = os.path.join(working_dir, 'transform_output')
transformed_examples_path = os.path.join(working_dir,
'transformed_examples')
# Run very simplified version of executor logic.
# TODO(kestert): Replace with tft_unit.assertAnalyzeAndTransformResults.
# Generate legacy `DatasetMetadata` object. Future version of Transform
# will accept the `Schema` proto directly.
legacy_metadata = dataset_metadata.DatasetMetadata(
dataset_schema.from_feature_spec(feature_spec))
decoder = tft.coders.ExampleProtoCoder(legacy_metadata.schema)
with beam.Pipeline() as p:
with tft_beam.Context(temp_dir=os.path.join(working_dir, 'tmp')):
examples = (
p
| 'ReadTrainData' >> beam.io.ReadFromTFRecord(
os.path.join(self._testdata_path,
'csv_example_gen/train/*'),
coder=beam.coders.BytesCoder(),
# TODO(b/114938612): Eventually remove this override.
validate=False)
| 'DecodeTrainData' >> beam.Map(decoder.decode))
(transformed_examples, transformed_metadata), transform_fn = (
(examples, legacy_metadata)
| 'AnalyzeAndTransform' >>
tft_beam.AnalyzeAndTransformDataset(
taxi_utils.preprocessing_fn))
# WriteTransformFn writes transform_fn and metadata to subdirectories
# tensorflow_transform.SAVED_MODEL_DIR and
# tensorflow_transform.TRANSFORMED_METADATA_DIR respectively.
# pylint: disable=expression-not-assigned
(transform_fn
| 'WriteTransformFn' >>
tft_beam.WriteTransformFn(transform_output_path))
encoder = tft.coders.ExampleProtoCoder(
transformed_metadata.schema)
(transformed_examples
| 'EncodeTrainData' >> beam.Map(encoder.encode)
| 'WriteTrainData' >> beam.io.WriteToTFRecord(
os.path.join(transformed_examples_path,
'train/transformed_examples.gz'),
coder=beam.coders.BytesCoder()))
# pylint: enable=expression-not-assigned
# Verify the output matches golden output.
# NOTE: we don't verify that transformed examples match golden output.
expected_transformed_schema = io_utils.parse_pbtxt_file(
os.path.join(
self._testdata_path,
'transform/transform_output/transformed_metadata/schema.pbtxt'
), schema_pb2.Schema())
transformed_schema = io_utils.parse_pbtxt_file(
os.path.join(transform_output_path,
'transformed_metadata/schema.pbtxt'),
schema_pb2.Schema())
# Clear annotations so we only have to test main schema.
for feature in transformed_schema.feature:
feature.ClearField('annotation')
self.assertEqual(transformed_schema, expected_transformed_schema)
def Do(self, input_dict: Dict[Text, List[types.Artifact]],
output_dict: Dict[Text, List[types.Artifact]],
exec_properties: Dict[Text, Any]) -> None:
"""Uses a user-supplied tf.estimator to train a TensorFlow model locally.
The Trainer Executor invokes a training_fn callback function provided by
the user via the module_file parameter. With the tf.estimator returned by
this function, the Trainer Executor then builds a TensorFlow model using the
user-provided tf.estimator.
Args:
input_dict: Input dict from input key to a list of ML-Metadata Artifacts.
- examples: Examples used for training, must include 'train' and 'eval'
splits.
- transform_output: Optional input transform graph.
- schema: Schema of the data.
output_dict: Output dict from output key to a list of Artifacts.
- model: Exported model.
- model_run: Model training related outputs (e.g., Tensorboard logs)
exec_properties: A dict of execution properties.
- train_args: JSON string of trainer_pb2.TrainArgs instance, providing
args for training.
- eval_args: JSON string of trainer_pb2.EvalArgs instance, providing
args for eval.
- module_file: Python module file containing UDF model definition.
- warm_starting: Whether or not we need to do warm starting.
- warm_start_from: Optional. If warm_starting is True, this is the
directory to find previous model to warm start on.
- custom_config: Optional. JSON-serialized dict of additional parameters
to pass to trainer function.
Returns:
None
Raises:
ValueError: When neither or both of 'module_file' and 'trainer_fn'
are present in 'exec_properties'.
"""
self._log_startup(input_dict, output_dict, exec_properties)
fn_args = self._GetFnArgs(input_dict, output_dict, exec_properties)
trainer_fn = udf_utils.get_fn(exec_properties, 'trainer_fn')
schema = io_utils.parse_pbtxt_file(fn_args.schema_file, schema_pb2.Schema())
# TODO(b/160795287): Deprecate estimator based executor.
# Provide user with a modified fn_args, with model_run given as
# the working directory. Executor will then copy user models to
# model artifact directory.
serving_dest = fn_args.serving_model_dir
eval_dest = fn_args.eval_model_dir
working_dir = fn_args.model_run_dir
fn_args.serving_model_dir = path_utils.serving_model_dir(working_dir)
fn_args.eval_model_dir = path_utils.eval_model_dir(working_dir)
training_spec = trainer_fn(fn_args, schema)
# Train the model
absl.logging.info('Training model.')
tf.estimator.train_and_evaluate(training_spec['estimator'],
training_spec['train_spec'],
training_spec['eval_spec'])
absl.logging.info(
'Training complete. Model written to %s. ModelRun written to %s',
fn_args.serving_model_dir, fn_args.model_run_dir)
# Export an eval savedmodel for TFMA. If distributed training, it must only
# be written by the chief worker, as would be done for serving savedmodel.
if _is_chief():
absl.logging.info('Exporting eval_savedmodel for TFMA.')
tfma.export.export_eval_savedmodel(
estimator=training_spec['estimator'],
export_dir_base=fn_args.eval_model_dir,
eval_input_receiver_fn=training_spec['eval_input_receiver_fn'])
absl.logging.info('Exported eval_savedmodel to %s.',
fn_args.eval_model_dir)
# TODO(b/160795287): Deprecate estimator based executor.
# Copy serving and eval model from model_run to model artifact directory.
serving_source = path_utils.serving_model_path(fn_args.model_run_dir)
io_utils.copy_dir(serving_source, serving_dest)
absl.logging.info('Serving model copied to: %s.', serving_dest)
eval_source = path_utils.eval_model_path(fn_args.model_run_dir)
io_utils.copy_dir(eval_source, eval_dest)
absl.logging.info('Eval model copied to: %s.', eval_dest)
else:
absl.logging.info(
'Model export is skipped because this is not the chief worker.')
def Do(self, input_dict: Dict[Text, List[types.Artifact]],
output_dict: Dict[Text, List[types.Artifact]],
exec_properties: Dict[Text, Any]) -> None:
"""Uses a user-supplied tf.estimator to train a TensorFlow model locally.
The Trainer Executor invokes a training_fn callback function provided by
the user via the module_file parameter. With the tf.estimator returned by
this function, the Trainer Executor then builds a TensorFlow model using the
user-provided tf.estimator.
Args:
input_dict: Input dict from input key to a list of ML-Metadata Artifacts.
- examples: Examples used for training, must include 'train' and 'eval'
splits.
- transform_output: Optional input transform graph.
- schema: Schema of the data.
output_dict: Output dict from output key to a list of Artifacts.
- output: Exported model.
exec_properties: A dict of execution properties.
- train_args: JSON string of trainer_pb2.TrainArgs instance, providing
args for training.
- eval_args: JSON string of trainer_pb2.EvalArgs instance, providing
args for eval.
- module_file: Python module file containing UDF model definition.
- warm_starting: Whether or not we need to do warm starting.
- warm_start_from: Optional. If warm_starting is True, this is the
directory to find previous model to warm start on.
- custom_config: Optional. Additional parameters to pass to trainer
function.
Returns:
None
Raises:
ValueError: When neither or both of 'module_file' and 'trainer_fn'
are present in 'exec_properties'.
"""
self._log_startup(input_dict, output_dict, exec_properties)
fn_args = self._GetFnArgs(input_dict, output_dict, exec_properties)
trainer_fn = self._GetFn(exec_properties, 'trainer_fn')
schema = io_utils.parse_pbtxt_file(fn_args.schema_file, schema_pb2.Schema())
training_spec = trainer_fn(fn_args, schema)
# Train the model
absl.logging.info('Training model.')
tf.estimator.train_and_evaluate(training_spec['estimator'],
training_spec['train_spec'],
training_spec['eval_spec'])
absl.logging.info('Training complete. Model written to %s',
fn_args.serving_model_dir)
# Export an eval savedmodel for TFMA
# For distributed training, master and worker(s) try to export multiple
# eval_savedmodels (b/147378113). To avoid that, only export
# eval_savedmodel if eval_model_dir does not exist as an intermediate
# solution until b/147378113 is resolved.
if not tf.io.gfile.exists(fn_args.eval_model_dir):
absl.logging.info('Exporting eval_savedmodel for TFMA.')
tfma.export.export_eval_savedmodel(
estimator=training_spec['estimator'],
export_dir_base=fn_args.eval_model_dir,
eval_input_receiver_fn=training_spec['eval_input_receiver_fn'])
absl.logging.info('Exported eval_savedmodel to %s.',
fn_args.eval_model_dir)
