src/sagemaker_xgboost_container/algorithm_mode/train.py [365:371]:
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                xgb_model, iteration, callbacks = get_callbacks(
                    model_dir=model_dir,
                    checkpoint_dir=checkpoint_dir,
                    early_stopping_data_name=early_stopping_data_name,
                    early_stopping_metric=early_stopping_metric,
                    early_stopping_rounds=early_stopping_rounds,
                    save_model_on_termination=save_model_on_termination,
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src/sagemaker_xgboost_container/distributed_gpu/distributed_gpu_training.py [153:159]:
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            xgb_model, iteration, callbacks = get_callbacks(
                model_dir=model_dir,
                checkpoint_dir=checkpoint_dir,
                early_stopping_data_name=early_stopping_data_name,
                early_stopping_metric=early_stopping_metric,
                early_stopping_rounds=early_stopping_rounds,
                save_model_on_termination=save_model_on_termination,
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