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Subject [GitHub] ashb commented on a change in pull request #4091: [AIRFLOW-2524] Update SageMaker hook, operator and sensor for training, tuning and transform
Date Wed, 31 Oct 2018 19:42:50 GMT
ashb commented on a change in pull request #4091: [AIRFLOW-2524] Update SageMaker hook, operator
and sensor for training, tuning and transform
URL: https://github.com/apache/incubator-airflow/pull/4091#discussion_r229840916
 
 

 ##########
 File path: airflow/contrib/operators/sagemaker_tuning_operator.py
 ##########
 @@ -0,0 +1,97 @@
+# -*- coding: utf-8 -*-
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+from airflow.contrib.hooks.aws_hook import AwsHook
+from airflow.contrib.operators.sagemaker_base_operator import SageMakerBaseOperator
+from airflow.utils.decorators import apply_defaults
+from airflow.exceptions import AirflowException
+
+
+class SageMakerTuningOperator(SageMakerBaseOperator):
+    """
+    Initiate a SageMaker hyper-parameter tuning job.
+
+    This operator returns The ARN of the tuning job created in Amazon SageMaker.
+
+    :param config: The configuration necessary to start a tuning job (templated)
+    :type config: dict
+    :param aws_conn_id: The AWS connection ID to use.
+    :type aws_conn_id: str
+    :param wait_for_completion: if the operator should block until tuning job finishes
+    :type wait_for_completion: bool
+    :param check_interval: if wait is set to be true, this is the time interval
+        in seconds which the operator will check the status of the tuning job
+    :type check_interval: int
+    :param max_ingestion_time: if wait is set to be true, the operator will fail
+        if the tuning job hasn't finish within the max_ingestion_time in seconds
+        (Caution: be careful to set this parameters because tuning can take very long)
+    :type max_ingestion_time: int
+    """
+
+    integer_fields = [
+        ['HyperParameterTuningJobConfig', 'ResourceLimits', 'MaxNumberOfTrainingJobs'],
+        ['HyperParameterTuningJobConfig', 'ResourceLimits', 'MaxParallelTrainingJobs'],
+        ['TrainingJobDefinition', 'ResourceConfig', 'InstanceCount'],
+        ['TrainingJobDefinition', 'ResourceConfig', 'VolumeSizeInGB'],
+        ['TrainingJobDefinition', 'StoppingCondition', 'MaxRuntimeInSeconds']
+    ]
+
+    @apply_defaults
+    def __init__(self,
+                 config,
+                 wait_for_completion=True,
+                 check_interval=30,
+                 max_ingestion_time=None,
+                 *args, **kwargs):
+        super(SageMakerTuningOperator, self).__init__(config=config,
+                                                      *args, **kwargs)
+        self.config = config
+        self.wait_for_completion = wait_for_completion
+        self.check_interval = check_interval
+        self.max_ingestion_time = max_ingestion_time
+
+    def expand_role(self):
+        if 'TrainingJobDefinition' in self.config:
+            config = self.config['TrainingJobDefinition']
+            if 'RoleArn' in config:
+                hook = AwsHook()
 
 Review comment:
   ```suggestion
                   hook = AwsHook(self.aws_conn_id)
   ```

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