fix: remove historical job_name caching which causes long job name (#5118)

Author: jkasiraj

Diff for: src/sagemaker/workflow/steps.py

@@ -18,7 +18,6 @@
 
 from enum import Enum
 from typing import Dict, List, Set, Union, Optional, Any, TYPE_CHECKING
-from urllib.parse import urlparse
 
 import attr
 
@@ -465,6 +464,7 @@ def __init__(
         self.step_args = step_args
         self.estimator = estimator
         self.inputs = inputs
+        self.job_name = None
 
         self._properties = Properties(
             step_name=name, step=self, shape_name="DescribeTrainingJobResponse"
@@ -493,19 +493,6 @@ def __init__(
                 DeprecationWarning,
             )
 
-        self.job_name = None
-        if estimator and (estimator.source_dir or estimator.entry_point):
-            # By default, `Estimator` will upload the local code to an S3 path
-            # containing a timestamp. This causes cache misses whenever a
-            # pipeline is updated, even if the underlying script hasn't changed.
-            # To avoid this, hash the contents of the training script and include it
-            # in the `job_name` passed to the `Estimator`, which will be used
-            # instead of the timestamped path.
-            if not is_pipeline_variable(estimator.source_dir) and not is_pipeline_variable(
-                estimator.entry_point
-            ):
-                self.job_name = self._generate_code_upload_path()
-
     @property
     def arguments(self) -> RequestType:
         """The arguments dictionary that is used to call `create_training_job`.
@@ -554,26 +541,6 @@ def to_request(self) -> RequestType:
 
         return request_dict
 
-    def _generate_code_upload_path(self) -> str or None:
-        """Generate an upload path for local training scripts based on their content."""
-        from sagemaker.workflow.utilities import hash_files_or_dirs
-
-        if self.estimator.source_dir:
-            source_dir_url = urlparse(self.estimator.source_dir)
-            if source_dir_url.scheme == "" or source_dir_url.scheme == "file":
-                code_hash = hash_files_or_dirs(
-                    [self.estimator.source_dir] + self.estimator.dependencies
-                )
-                return f"{self.name}-{code_hash}"[:1024]
-        elif self.estimator.entry_point:
-            entry_point_url = urlparse(self.estimator.entry_point)
-            if entry_point_url.scheme == "" or entry_point_url.scheme == "file":
-                code_hash = hash_files_or_dirs(
-                    [self.estimator.entry_point] + self.estimator.dependencies
-                )
-                return f"{self.name}-{code_hash}"[:1024]
-        return None
-
 
 class CreateModelStep(ConfigurableRetryStep):
     """`CreateModelStep` for SageMaker Pipelines Workflows."""
@@ -895,16 +862,6 @@ def __init__(
                         "code argument has to be a valid S3 URI or local file path "
                         + "rather than a pipeline variable"
                     )
-                code_url = urlparse(code)
-                if code_url.scheme == "" or code_url.scheme == "file":
-                    # By default, `Processor` will upload the local code to an S3 path
-                    # containing a timestamp. This causes cache misses whenever a
-                    # pipeline is updated, even if the underlying script hasn't changed.
-                    # To avoid this, hash the contents of the script and include it
-                    # in the `job_name` passed to the `Processor`, which will be used
-                    # instead of the timestamped path.
-                    self.job_name = self._generate_code_upload_path()
-
             warnings.warn(
                 (
                     'We are deprecating the instantiation of ProcessingStep using "processor".'

Diff for: tests/unit/sagemaker/workflow/test_steps.py

@@ -671,7 +671,7 @@ def test_processing_step_normalizes_args_with_local_code(mock_normalize_args, sc
     mock_normalize_args.return_value = [step.inputs, step.outputs]
     step.to_request()
     mock_normalize_args.assert_called_with(
-        job_name="MyProcessingStep-a22fc59b38f13da26f6a40b18687ba598cf669f74104b793cefd9c63eddf4ac7",
+        job_name=None,
         arguments=step.job_arguments,
         inputs=step.inputs,
         outputs=step.outputs,

Diff for: tests/unit/sagemaker/workflow/test_utils.py

@@ -80,11 +80,11 @@ def test_repack_model_step(estimator):
     assert hyperparameters["inference_script"] == '"dummy_script.py"'
     assert hyperparameters["model_archive"] == '"s3://my-bucket/model.tar.gz"'
     assert hyperparameters["sagemaker_program"] == f'"{REPACK_SCRIPT_LAUNCHER}"'
-    assert (
-        hyperparameters["sagemaker_submit_directory"]
-        == '"s3://my-bucket/MyRepackModelStep-717d7bdd388168c27e9ad2938ff0314e35be50b3157cf2498688c7525ea27e1e\
-/source/sourcedir.tar.gz"'
-    )
+
+    # ex: "gits3://my-bucket/sagemaker-scikit-learn-2025-04-07-20-39-38-854/source/sourcedir.tar.gz"
+    sagemaker_submit_directory = hyperparameters["sagemaker_submit_directory"]
+    assert sagemaker_submit_directory.startswith('"s3://my-bucket/sagemaker-scikit-learn-')
+    assert sagemaker_submit_directory.endswith('/source/sourcedir.tar.gz"')
 
     del request_dict["Arguments"]["HyperParameters"]
     del request_dict["Arguments"]["AlgorithmSpecification"]["TrainingImage"]