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fix: resolve Nova model artifacts via TrainingJob.get() in bedrock-modelbuilder-deployment example - #6091
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July 23, 2026 09:37
…ploy example In bedrock-modelbuilder-deployment.ipynb, after sft_trainer.train(wait=True) the example printed sft_trainer._latest_training_job.model_artifacts.s3_model_artifacts. For Nova training jobs the DescribeTrainingJob API returns no ModelArtifacts, and the trainer's cached _latest_training_job is not re-fetched -- so model_artifacts stays Unassigned and the cell raises 'AttributeError: Unassigned object has no attribute s3_model_artifacts', halting the notebook before deploy. Re-fetch the completed job with TrainingJob.get(), which synthesizes the artifacts path from output_data_config (same pattern the earlier get() cell already uses).
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Issue
In
v3-examples/model-customization-examples/bedrock-modelbuilder-deployment.ipynb, aftersft_trainer.train(wait=True)the notebook prints:For Nova training jobs this raises
AttributeError: 'Unassigned' object has no attribute 's3_model_artifacts', halting the notebook before the deploy step. Confirmed against a real completed job:DescribeTrainingJobreturnsModelArtifacts: nullfor Nova (artifacts go to the managed escrow bucket), somodel_artifactsisUnassigned. The SDK synthesizesmodel_artifactsfromOutputDataConfig— but only insideTrainingJob.get(), not on the trainer's cached_latest_training_job.Fix
Re-fetch the completed job with
TrainingJob.get(...)(which triggers the synthesis) and print from that — the same pattern the earlierTrainingJob.get()cell in this notebook already uses. Minimal change to the one cell.(Note: this unblocks the subsequent
BedrockModelBuilder(model=sft_trainer).deploy(...)cell, which relies on the trainer object directly.)