def validate_dataset(ctx, raw_df, cols_to_validate):
total_row_count = aws.read_json_from_s3(ctx.raw_dataset["metadata_key"],
ctx.bucket)["dataset_size"]
conditions_dict = spark_util.value_check_data(ctx, raw_df,
cols_to_validate)
if len(conditions_dict) > 0:
for column, cond_count_list in conditions_dict.items():
for condition, fail_count in cond_count_list:
logger.error(
"Data validation {} has been violated in {}/{} samples".
format(condition, fail_count, total_row_count))
raise UserException("raw column validations failed")
def train(model_name, model_impl, ctx, model_dir):
model = ctx.models[model_name]
util.mkdir_p(model_dir)
util.rm_dir(model_dir)
tf_lib.set_logging_verbosity(ctx.environment["log_level"]["tensorflow"])
run_config = tf.estimator.RunConfig(
tf_random_seed=model["training"]["tf_random_seed"],
save_summary_steps=model["training"]["save_summary_steps"],
save_checkpoints_secs=model["training"]["save_checkpoints_secs"],
save_checkpoints_steps=model["training"]["save_checkpoints_steps"],
log_step_count_steps=model["training"]["log_step_count_steps"],
keep_checkpoint_max=model["training"]["keep_checkpoint_max"],
keep_checkpoint_every_n_hours=model["training"]
["keep_checkpoint_every_n_hours"],
model_dir=model_dir,
)
train_input_fn = generate_input_fn(model_name, ctx, "training")
eval_input_fn = generate_input_fn(model_name, ctx, "evaluation")
serving_input_fn = generate_json_serving_input_fn(model_name, ctx)
exporter = tf.estimator.FinalExporter("estimator",
serving_input_fn,
as_text=False)
dataset_metadata = aws.read_json_from_s3(model["dataset"]["metadata_key"],
ctx.bucket)
train_num_steps = model["training"]["num_steps"]
if model["training"]["num_epochs"]:
train_num_steps = (
math.ceil(dataset_metadata["dataset_size"] *
model["data_partition_ratio"]["training"] /
float(model["training"]["batch_size"])) *
model["training"]["num_epochs"])
train_spec = tf.estimator.TrainSpec(train_input_fn,
max_steps=train_num_steps)
eval_num_steps = model["evaluation"]["num_steps"]
if model["evaluation"]["num_epochs"]:
eval_num_steps = (
math.ceil(dataset_metadata["dataset_size"] *
model["data_partition_ratio"]["evaluation"] /
float(model["evaluation"]["batch_size"])) *
model["evaluation"]["num_epochs"])
eval_spec = tf.estimator.EvalSpec(
eval_input_fn,
steps=eval_num_steps,
exporters=[exporter],
name="estimator-eval",
start_delay_secs=model["evaluation"]["start_delay_secs"],
throttle_secs=model["evaluation"]["throttle_secs"],
)
model_config = ctx.model_config(model["name"])
tf_lib.add_tf_types(model_config)
try:
estimator = model_impl.create_estimator(run_config, model_config)
except Exception as e:
raise UserRuntimeException("model " + model_name) from e
if model["type"] == "regression":
estimator = tf.contrib.estimator.add_metrics(
estimator, get_regression_eval_metrics)
tf.estimator.train_and_evaluate(estimator, train_spec, eval_spec)
return model_dir
def get_resource_status(self, resource):
key = self.resource_status_key(resource)
return aws.read_json_from_s3(key, self.bucket)
