On Error running xgboost nodebook.

[PengliuIBM]

Hi, @marfriaz

This is just a small question When running notebook step by step:
https://github.com/aws/amazon-sagemaker-examples/blob/main/introduction_to_amazon_algorithms/xgboost_mnist/xgboost_mnist.ipynb
, encountering an issue:
AlgorithmError: framework error: Traceback (most recent call last): File "/miniconda3/lib/python3.9/site-packages/sagemaker_xgboost_container/algorithm_mode/train.py", line 319, in train_job bst = xgb.train( File "/miniconda3/lib/python3.9/site-packages/xgboost/core.py", line 620, in inner_f return func(**kwargs) File "/miniconda3/lib/python3.9/site-packages/xgboost/training.py", line 185, in train bst.update(dtrain, i, obj) File "/miniconda3/lib/python3.9/site-packages/xgboost/core.py", line 1918, in update _check_call(_LIB.XGBoosterUpdateOneIter(self.handle, File "/miniconda3/lib/python3.9/site-packages/xgboost/core.py", line 279, in _check_call raise XGBoostError(py_str(LIB.XGBGetLastError())) xgboost.core.XGBoostError: [02:02:41] ../src/tree/updater_colmaker.cc:177: Check failed: param.max_depth > 0 (0 vs. 0) : exact tree method doesn't support unlimited depth. Stack trace: [bt] (0) /miniconda3/lib/python3.9/site-packages/xgboost/lib/libxgboost.so(+0x4064c9) [0x7f3955707

it looks as "the param_.max_depth > 0 (0 vs. 0) : exact tree method doesn't support unlimited depth"
as below code snappet, as max_depth should be range in 3-10, MinValue: 3 or 6 will be better to avoid Error?

    "IntegerParameterRanges": [
        {
            "MaxValue": "10",
            "MinValue": "0",
            "Name": "max_depth",
        },
        {
            "MaxValue": "50",
            "MinValue": "1",
            "Name": "num_round",
        },
    ]

@marfriaz, I saw you're owner of this one, is it correct understanding? Thanks.
BR,
patrick