[BUG] within cuml, Treelite might not handle empty categorical nodes

[levsnv]

Describe the bug Although fixes have been merged into cuml for Treelite to handle empty categorical nodes, the fix doesn't seem to work in cuml. After committing model using model builder C++ API, it crashes with "nid out of range".

Steps/Code to reproduce bug Once https://github.com/rapidsai/cuml/pull/4173 is merged, one will be able to reproduce the issue on branch-21.10.

A good CI run: https://gpuci.gpuopenanalytics.com/job/rapidsai/job/gpuci/job/cuml/job/prb/job/cuml-gpu-test/CUDA=11.2,GPU_LABEL=gpu,LINUX_VER=ubuntu18.04,PYTHON=3.8/1402/ A bad CI run: https://gpuci.gpuopenanalytics.com/job/rapidsai/job/gpuci/job/cuml/job/prb/job/cuml-gpu-test/CUDA=11.2,GPU_LABEL=gpu,LINUX_VER=ubuntu18.04,PYTHON=3.8/1403/ Difference:

diff --git a/cpp/test/sg/fil_test.cu b/cpp/test/sg/fil_test.cu
index eeb72a97c..48b96517e 100644
--- a/cpp/test/sg/fil_test.cu
+++ b/cpp/test/sg/fil_test.cu
@@ -183,12 +183,7 @@ void adjust_threshold_to_treelite(
   // the meaning of the condition is reversed compared to FIL;
   // thus, "<" in treelite corresonds to comparison ">=" used by FIL
   // https://github.com/dmlc/treelite/blob/master/include/treelite/tree.h#L243
-  // TODO(levsnv): remove workaround once confirmed to work with empty category lists in Treelite
-  if (isnan(*pthreshold)) {
-    std::swap(*tl_left, *tl_right);
-    *default_left = !*default_left;
-    return;
-  }
+  // threshold is never generated as NAN
   switch (comparison_op) {
     case tl::Operator::kLT: break;
     case tl::Operator::kLE:
@@ -792,23 +787,12 @@ class TreeliteFilTest : public BaseFilTest {
       }
       int left_key  = node_to_treelite(builder, pkey, root, left);
       int right_key = node_to_treelite(builder, pkey, root, right);
-      // TODO(levsnv): remove workaround once confirmed to work with empty category lists in
-      // Treelite
-      if (!left_categories.empty() && dense_node.is_categorical()) {
-        // Treelite builder APIs don't allow to set categorical_split_right_child
-        // (which child the categories pertain to). Only the Tree API allows that.
-        // in FIL, categories always pertain to the right child, and the default in treelite
-        // is left categories in SetCategoricalTestNode
+      if (dense_node.is_categorical()) {
         std::swap(left_key, right_key);
         default_left = !default_left;
         builder->SetCategoricalTestNode(
           key, dense_node.fid(), left_categories, default_left, left_key, right_key);
       } else {
-        if (dense_node.is_categorical()) {
-          // TODO(levsnv): remove workaround once confirmed to work with empty category lists in
-          // Treelite
-          threshold = NAN;
-        }
         adjust_threshold_to_treelite(&threshold, &left_key, &right_key, &default_left, ps.op);
         builder->SetNumericalTestNode(key,
                                       dense_node.fid(),

Expected behavior A clear and concise description of what you expected to happen.

Environment details (please complete the following information):

• Environment location: [Bare-metal, Docker, Cloud(specify cloud provider)]
• Linux Distro/Architecture: [Ubuntu 16.04 amd64]
• GPU Model/Driver: [V100 and driver 396.44]
• CUDA: [9.2]
• Method of cuDF & cuML install: conda, both local and CI config local config: short version:

  treelite                  2.1.0            py38hdd725b4_0    conda-forge
  treelite-runtime          2.1.0                    pypi_0    pypi

long version:

# packages in environment at /home/ldolgovs/miniconda3/envs/cuml_dev_21.10_11.0:
#
# Name                    Version                   Build  Channel
_libgcc_mutex             0.1                 conda_forge    conda-forge
_openmp_mutex             4.5                      1_llvm    conda-forge
_py-xgboost-mutex         2.0                       cpu_0  
abseil-cpp                20210324.2           h9c3ff4c_0    conda-forge
aiobotocore               1.4.0              pyhd8ed1ab_0    conda-forge
aiohttp                   3.7.4.post0      py38h497a2fe_0    conda-forge
aioitertools              0.8.0              pyhd8ed1ab_0    conda-forge
alabaster                 0.7.12                     py_0    conda-forge
anyio                     3.3.0            py38h578d9bd_0    conda-forge
appdirs                   1.4.4              pyh9f0ad1d_0    conda-forge
argon2-cffi               20.1.0           py38h497a2fe_2    conda-forge
arrow-cpp                 5.0.0           py38h6d78c26_3_cuda    conda-forge
arrow-cpp-proc            3.0.0                      cuda    conda-forge
asn1crypto                1.4.0              pyh9f0ad1d_0    conda-forge
asvdb                     0.4.1               gd6cd8f2_36    rapidsai
async-timeout             3.0.1                   py_1000    conda-forge
async_generator           1.10                       py_0    conda-forge
atk-1.0                   2.36.0               h3371d22_4    conda-forge
attrs                     21.2.0             pyhd8ed1ab_0    conda-forge
autoconf                  2.69            pl5320h36c2ea0_10    conda-forge
automake                  1.16.2          pl5320ha770c72_3    conda-forge
aws-c-cal                 0.5.11               h95a6274_0    conda-forge
aws-c-common              0.6.2                h7f98852_0    conda-forge
aws-c-event-stream        0.2.7               h3541f99_13    conda-forge
aws-c-io                  0.10.5               hfb6a706_0    conda-forge
aws-checksums             0.1.11               ha31a3da_7    conda-forge
aws-sam-translator        1.38.0             pyhd8ed1ab_0    conda-forge
aws-sdk-cpp               1.8.186              hb4091e7_3    conda-forge
aws-xray-sdk              2.8.0              pyhd8ed1ab_0    conda-forge
babel                     2.9.1              pyh44b312d_0    conda-forge
backcall                  0.2.0              pyh9f0ad1d_0    conda-forge
backports                 1.0                        py_2    conda-forge
backports.functools_lru_cache 1.6.4              pyhd8ed1ab_0    conda-forge
beautifulsoup4            4.9.3              pyhb0f4dca_0    conda-forge
benchmark                 1.5.1                he1b5a44_2    conda-forge
black                     19.10b0                    py_4    conda-forge
blas                      2.111                  openblas    conda-forge
blas-devel                3.9.0           11_linux64_openblas    conda-forge
bleach                    4.1.0              pyhd8ed1ab_0    conda-forge
blinker                   1.4                        py_1    conda-forge
blosc                     1.21.0               h9c3ff4c_0    conda-forge
bokeh                     2.3.3            py38h578d9bd_0    conda-forge
boost                     1.72.0           py38h1e42940_1    conda-forge
boost-cpp                 1.72.0               h312852a_5    conda-forge
boto3                     1.17.106           pyhd8ed1ab_0    conda-forge
botocore                  1.20.106           pyhd8ed1ab_0    conda-forge
brotli                    1.0.9                h7f98852_5    conda-forge
brotli-bin                1.0.9                h7f98852_5    conda-forge
brotlipy                  0.7.0           py38h497a2fe_1001    conda-forge
brunsli                   0.1                  h9c3ff4c_0    conda-forge
bzip2                     1.0.8                h7f98852_4    conda-forge
c-ares                    1.17.2               h7f98852_0    conda-forge
ca-certificates           2021.5.30            ha878542_0    conda-forge
cachetools                4.2.2              pyhd8ed1ab_0    conda-forge
cairo                     1.16.0            h6cf1ce9_1008    conda-forge
certifi                   2021.5.30        py38h578d9bd_0    conda-forge
cffi                      1.14.6           py38ha65f79e_0    conda-forge
cfitsio                   3.470                hb418390_7    conda-forge
cfn-lint                  0.53.1           py38h578d9bd_0    conda-forge
chardet                   4.0.0            py38h578d9bd_1    conda-forge
charls                    2.2.0                h9c3ff4c_0    conda-forge
clang                     11.0.0          default_h934c63c_0    conda-forge
clang-tools               11.0.0          default_h934c63c_0    conda-forge
clangxx                   11.0.0          default_hde54327_0    conda-forge
click                     7.1.2              pyh9f0ad1d_0    conda-forge
click-plugins             1.1.1                      py_0    conda-forge
cligj                     0.7.2              pyhd8ed1ab_0    conda-forge
cloudpickle               1.6.0                      py_0    conda-forge
cmake                     3.20.5               h8897547_0    conda-forge
cmake-format              0.6.11             pyh9f0ad1d_0    conda-forge
cmake_setuptools          0.1.3                      py_0    rapidsai
cmarkgfm                  0.6.0            py38h497a2fe_0    conda-forge
colorama                  0.4.4              pyh9f0ad1d_0    conda-forge
colorcet                  2.0.6              pyhd8ed1ab_0    conda-forge
commonmark                0.9.1                      py_0    conda-forge
conda                     4.10.3           py38h578d9bd_0    conda-forge
conda-build               3.20.3           py38h32f6830_0    conda-forge
conda-package-handling    1.7.3            py38h497a2fe_0    conda-forge
conda-verify              3.1.1           py38h578d9bd_1003    conda-forge
coverage                  5.5              py38h497a2fe_0    conda-forge
cryptography              3.4.7            py38ha5dfef3_0    conda-forge
cudatoolkit               11.0.221             h6bb024c_0    nvidia
cudf                      21.10.00a210902 cuda_11.0_py38_g4556b5b6c1_265    rapidsai-nightly
cuml                      21.10.0a0+180.gc0d6bc618          pypi_0    pypi
cupy                      9.4.0            py38h9612f98_0    conda-forge
curl                      7.78.0               hea6ffbf_0    conda-forge
cycler                    0.10.0                     py_2    conda-forge
cyrus-sasl                2.1.27               h230043b_2    conda-forge
cython                    0.29.24          py38h709712a_0    conda-forge
cytoolz                   0.11.0           py38h497a2fe_3    conda-forge
dask                      2021.8.1+20.gaf34908a          pypi_0    pypi
dask-core                 2021.9.1           pyhd8ed1ab_0    conda-forge
dask-cuda                 21.10.00a210902         py38_35    rapidsai-nightly
dask-cudf                 21.10.00a210902 py38_g4556b5b6c1_265    rapidsai-nightly
dask-glm                  0.2.0                      py_1    conda-forge
dask-labextension         5.1.0              pyhd8ed1ab_0    conda-forge
dask-ml                   1.9.0              pyhd8ed1ab_0    conda-forge
dataclasses               0.8                pyhc8e2a94_3    conda-forge
datashader                0.11.1             pyh9f0ad1d_0    conda-forge
datashape                 0.5.4                      py_1    conda-forge
dbus                      1.13.6               h48d8840_2    conda-forge
decorator                 4.4.2                      py_0    conda-forge
defusedxml                0.7.1              pyhd8ed1ab_0    conda-forge
distributed               2021.8.1+21.ga2cb6df4          pypi_0    pypi
dlpack                    0.5                  h9c3ff4c_0    conda-forge
docker-py                 5.0.2            py38h578d9bd_0    conda-forge
docker-pycreds            0.4.0                      py_0    conda-forge
docutils                  0.16             py38h578d9bd_3    conda-forge
double-conversion         3.1.5                h9c3ff4c_2    conda-forge
doxygen                   1.8.20               had0d8f1_0    conda-forge
ecdsa                     0.17.0             pyhd8ed1ab_0    conda-forge
entrypoints               0.3             pyhd8ed1ab_1003    conda-forge
execnet                   1.9.0              pyhd8ed1ab_0    conda-forge
expat                     2.4.1                h9c3ff4c_0    conda-forge
fa2                       0.3.5            py38h1e0a361_0    conda-forge
faiss                     1.7.0           py38cuda110hbc41160_8_cuda    conda-forge
faiss-proc                1.0.0                      cuda    rapidsai
fastavro                  1.4.4            py38h497a2fe_0    conda-forge
fastrlock                 0.6              py38h709712a_1    conda-forge
feather-format            0.4.1              pyh9f0ad1d_0    conda-forge
filelock                  3.0.12             pyh9f0ad1d_0    conda-forge
filterpy                  1.4.5                      py_1    conda-forge
fiona                     1.8.20           py38hbb147eb_1    conda-forge
flake8                    3.8.4                      py_0    conda-forge
flask                     2.0.1              pyhd8ed1ab_0    conda-forge
flask_cors                3.0.10             pyhd3deb0d_0    conda-forge
font-ttf-dejavu-sans-mono 2.37                 hab24e00_0    conda-forge
font-ttf-inconsolata      3.000                h77eed37_0    conda-forge
font-ttf-source-code-pro  2.038                h77eed37_0    conda-forge
font-ttf-ubuntu           0.83                 hab24e00_0    conda-forge
fontconfig                2.13.1            hba837de_1005    conda-forge
fonts-conda-ecosystem     1                             0    conda-forge
fonts-conda-forge         1                             0    conda-forge
freetype                  2.10.4               h0708190_1    conda-forge
freexl                    1.0.6                h7f98852_0    conda-forge
fribidi                   1.0.10               h36c2ea0_0    conda-forge
fsspec                    2021.8.1           pyhd8ed1ab_0    conda-forge
future                    0.18.2           py38h578d9bd_3    conda-forge
gcsfs                     2021.8.1           pyhd8ed1ab_0    conda-forge
gdal                      3.3.1            py38h81a01a0_3    conda-forge
gdk-pixbuf                2.42.6               h04a7f16_0    conda-forge
geopandas                 0.9.0              pyhd8ed1ab_1    conda-forge
geopandas-base            0.9.0              pyhd8ed1ab_1    conda-forge
geos                      3.9.1                h9c3ff4c_2    conda-forge
geotiff                   1.6.0                h4f31c25_6    conda-forge
gettext                   0.19.8.1          h0b5b191_1005    conda-forge
gflags                    2.2.2             he1b5a44_1004    conda-forge
giflib                    5.2.1                h36c2ea0_2    conda-forge
git                       2.33.0          pl5321hc30692c_0    conda-forge
glib                      2.68.4               h9c3ff4c_0    conda-forge
glib-tools                2.68.4               h9c3ff4c_0    conda-forge
glob2                     0.7                        py_0    conda-forge
glog                      0.5.0                h48cff8f_0    conda-forge
gmock                     1.10.0               h4bd325d_7    conda-forge
gmp                       6.2.1                h58526e2_0    conda-forge
google-auth               2.0.2              pyh6c4a22f_0    conda-forge
google-auth-oauthlib      0.4.6              pyhd8ed1ab_0    conda-forge
graphite2                 1.3.13            h58526e2_1001    conda-forge
graphviz                  2.49.0               h85b4f2f_0    conda-forge
grpc-cpp                  1.39.1               hf1f433d_0    conda-forge
gtest                     1.10.0               h4bd325d_7    conda-forge
gtk2                      2.24.33              h539f30e_1    conda-forge
gts                       0.7.6                h64030ff_2    conda-forge
harfbuzz                  2.9.0                h83ec7ef_0    conda-forge
hdbscan                   0.8.27           py38h5c078b8_0    conda-forge
hdf4                      4.2.15               h10796ff_3    conda-forge
hdf5                      1.12.1          nompi_h2750804_100    conda-forge
heapdict                  1.0.1                      py_0    conda-forge
holoviews                 1.14.5             pyhd8ed1ab_0    conda-forge
html5lib                  1.1                pyh9f0ad1d_0    conda-forge
httpretty                 1.1.4              pyhd8ed1ab_0    conda-forge
huggingface_hub           0.0.16             pyhd8ed1ab_0    conda-forge
hypothesis                6.17.4             pyhd8ed1ab_0    conda-forge
icu                       68.1                 h58526e2_0    conda-forge
idna                      2.10               pyh9f0ad1d_0    conda-forge
imagecodecs               2021.7.30        py38hb5ce8f7_0    conda-forge
imageio                   2.9.0                      py_0    conda-forge
imagesize                 1.2.0                      py_0    conda-forge
importlib-metadata        4.8.1            py38h578d9bd_0    conda-forge
importlib_metadata        4.8.1                hd8ed1ab_0    conda-forge
inflection                0.5.1              pyh9f0ad1d_0    conda-forge
iniconfig                 1.1.1              pyh9f0ad1d_0    conda-forge
ipykernel                 5.5.5            py38hd0cf306_0    conda-forge
ipython                   7.15.0           py38h32f6830_0    conda-forge
ipython_genutils          0.2.0                      py_1    conda-forge
ipywidgets                7.6.4              pyhd8ed1ab_0    conda-forge
isort                     5.6.4                      py_0    conda-forge
itsdangerous              2.0.1              pyhd8ed1ab_0    conda-forge
jedi                      0.17.2           py38h578d9bd_1    conda-forge
jeepney                   0.7.1              pyhd8ed1ab_0    conda-forge
jinja2                    3.0.1              pyhd8ed1ab_0    conda-forge
jmespath                  0.10.0             pyh9f0ad1d_0    conda-forge
joblib                    1.0.1              pyhd8ed1ab_0    conda-forge
jpeg                      9d                   h36c2ea0_0    conda-forge
json-c                    0.15                 h98cffda_0    conda-forge
json5                     0.9.5              pyh9f0ad1d_0    conda-forge
jsondiff                  1.2.0                      py_1    conda-forge
jsonpatch                 1.24                       py_0    conda-forge
jsonpointer               2.0                        py_0    conda-forge
jsonschema                3.2.0              pyhd8ed1ab_3    conda-forge
junit-xml                 1.9                pyh9f0ad1d_0    conda-forge
jupyter-packaging         0.7.12             pyhd8ed1ab_0    conda-forge
jupyter-server-proxy      3.1.0              pyhd8ed1ab_0    conda-forge
jupyter_client            7.0.2              pyhd8ed1ab_0    conda-forge
jupyter_core              4.7.1            py38h578d9bd_0    conda-forge
jupyter_server            1.10.2             pyhd8ed1ab_0    conda-forge
jupyter_sphinx            0.3.1            py38h578d9bd_1    conda-forge
jupyterlab                3.1.10             pyhd8ed1ab_0    conda-forge
jupyterlab-nvdashboard    0.6.0                      py_0    rapidsai
jupyterlab_pygments       0.1.2              pyh9f0ad1d_0    conda-forge
jupyterlab_server         2.7.2              pyhd8ed1ab_0    conda-forge
jupyterlab_widgets        1.0.1              pyhd8ed1ab_0    conda-forge
jxrlib                    1.1                  h7f98852_2    conda-forge
kealib                    1.4.14               h87e4c3c_3    conda-forge
keyring                   23.1.0           py38h578d9bd_0    conda-forge
kiwisolver                1.3.2            py38h1fd1430_0    conda-forge
krb5                      1.19.2               hcc1bbae_0    conda-forge
lapack                    3.9.0                    netlib    conda-forge
lcms2                     2.12                 hddcbb42_0    conda-forge
ld_impl_linux-64          2.36.1               hea4e1c9_2    conda-forge
lerc                      2.2.1                h9c3ff4c_0    conda-forge
libaec                    1.0.5                h9c3ff4c_0    conda-forge
libarchive                3.5.2                hccf745f_0    conda-forge
libblas                   3.9.0           11_linux64_openblas    conda-forge
libbrotlicommon           1.0.9                h7f98852_5    conda-forge
libbrotlidec              1.0.9                h7f98852_5    conda-forge
libbrotlienc              1.0.9                h7f98852_5    conda-forge
libcblas                  3.9.0           11_linux64_openblas    conda-forge
libclang-cpp11            11.0.0          default_ha5c780c_2    conda-forge
libcudf                   21.10.00a210902 cuda11.0_g4556b5b6c1_265    rapidsai-nightly
libcumlprims              21.10.00a210826 cuda11.0_ga512fc5_5    rapidsai-nightly
libcurl                   7.78.0               h2574ce0_0    conda-forge
libcypher-parser          0.6.2                         1    rapidsai
libdap4                   3.20.6               hd7c4107_2    conda-forge
libdeflate                1.8                  h7f98852_0    conda-forge
libedit                   3.1.20191231         he28a2e2_2    conda-forge
libev                     4.33                 h516909a_1    conda-forge
libevent                  2.1.10               hcdb4288_3    conda-forge
libfaiss                  1.7.0           cuda110h8045045_8_cuda    conda-forge
libfaiss-avx2             1.7.0           cuda110h1234567_8_cuda    conda-forge
libffi                    3.3                  h58526e2_2    conda-forge
libgcc-ng                 9.4.0                hfa6338b_8    conda-forge
libgcrypt                 1.9.3                h7f98852_1    conda-forge
libgd                     2.3.2                h78a0170_0    conda-forge
libgdal                   3.3.1                h6214c1d_3    conda-forge
libgfortran-ng            9.4.0                h69a702a_8    conda-forge
libgfortran5              9.4.0                h62347ff_8    conda-forge
libglib                   2.68.4               h3e27bee_0    conda-forge
libgpg-error              1.42                 h9c3ff4c_0    conda-forge
libgsasl                  1.10.0               h5b4c23d_0    conda-forge
libhwloc                  2.3.0                h5e5b7d1_1    conda-forge
libiconv                  1.16                 h516909a_0    conda-forge
libkml                    1.3.0             hd79254b_1012    conda-forge
liblapack                 3.9.0           11_linux64_openblas    conda-forge
liblapacke                3.9.0           11_linux64_openblas    conda-forge
liblief                   0.11.5               h9c3ff4c_0    conda-forge
libllvm10                 10.0.1               he513fc3_3    conda-forge
libllvm11                 11.0.1               hf817b99_0    conda-forge
libnetcdf                 4.8.1           nompi_hb3fd0d9_101    conda-forge
libnghttp2                1.43.0               h812cca2_0    conda-forge
libntlm                   1.4               h7f98852_1002    conda-forge
libopenblas               0.3.17          pthreads_h8fe5266_1    conda-forge
libpng                    1.6.37               h21135ba_2    conda-forge
libpq                     13.3                 hd57d9b9_0    conda-forge
libprotobuf               3.16.0               h780b84a_0    conda-forge
librdkafka                1.6.1                hc49e61c_1    conda-forge
librmm                    21.10.00a210902 cuda11.0_g8527317_28    rapidsai-nightly
librsvg                   2.50.7               hc3c00ef_0    conda-forge
librttopo                 1.1.0                h1185371_6    conda-forge
libsodium                 1.0.18               h36c2ea0_1    conda-forge
libspatialindex           1.9.3                h9c3ff4c_4    conda-forge
libspatialite             5.0.1                h8694cbe_5    conda-forge
libssh2                   1.10.0               ha56f1ee_0    conda-forge
libstdcxx-ng              9.4.0                h79bfe98_8    conda-forge
libthrift                 0.14.2               he6d91bd_1    conda-forge
libtiff                   4.3.0                hf544144_0    conda-forge
libtool                   2.4.6             h58526e2_1007    conda-forge
libutf8proc               2.6.1                h7f98852_0    conda-forge
libuuid                   2.32.1            h7f98852_1000    conda-forge
libuv                     1.42.0               h7f98852_0    conda-forge
libwebp                   1.2.1                h3452ae3_0    conda-forge
libwebp-base              1.2.1                h7f98852_0    conda-forge
libxcb                    1.13              h7f98852_1003    conda-forge
libxgboost                1.3.3                h2531618_0  
libxml2                   2.9.12               h72842e0_0    conda-forge
libxslt                   1.1.33               h15afd5d_2    conda-forge
libzip                    1.8.0                h4de3113_0    conda-forge
libzopfli                 1.0.3                h9c3ff4c_0    conda-forge
lightgbm                  3.2.1            py38h709712a_0    conda-forge
llvm-openmp               12.0.1               h4bd325d_1    conda-forge
llvmlite                  0.36.0           py38h4630a5e_0    conda-forge
locket                    0.2.0                      py_2    conda-forge
lxml                      4.6.3            py38hf1fe3a4_0    conda-forge
lz4-c                     1.9.3                h9c3ff4c_1    conda-forge
lzo                       2.10              h516909a_1000    conda-forge
m4                        1.4.18            h516909a_1001    conda-forge
make                      4.3                  hd18ef5c_1    conda-forge
mapclassify               2.4.3              pyhd8ed1ab_0    conda-forge
markdown                  3.3.4              pyhd8ed1ab_0    conda-forge
markupsafe                2.0.1            py38h497a2fe_0    conda-forge
matplotlib-base           3.4.3            py38hf4fb855_0    conda-forge
mccabe                    0.6.1                      py_1    conda-forge
mimesis                   4.0.0              pyh9f0ad1d_0    conda-forge
mistune                   0.8.4           py38h497a2fe_1004    conda-forge
mock                      4.0.3            py38h578d9bd_1    conda-forge
more-itertools            8.8.0              pyhd8ed1ab_0    conda-forge
moto                      2.2.0              pyhd8ed1ab_0    conda-forge
msgpack-python            1.0.2            py38h1fd1430_1    conda-forge
multidict                 5.1.0            py38h497a2fe_1    conda-forge
multipledispatch          0.6.0                      py_0    conda-forge
munch                     2.5.0                      py_0    conda-forge
mypy                      0.782                      py_0    conda-forge
mypy_extensions           0.4.3            py38h578d9bd_3    conda-forge
nbclassic                 0.3.1              pyhd8ed1ab_1    conda-forge
nbclient                  0.5.4              pyhd8ed1ab_0    conda-forge
nbconvert                 6.1.0            py38h578d9bd_0    conda-forge
nbformat                  5.1.3              pyhd8ed1ab_0    conda-forge
nbsphinx                  0.8.7              pyhd8ed1ab_0    conda-forge
nccl                      2.10.3.1             h96e36e3_0    conda-forge
ncurses                   6.2                  h58526e2_4    conda-forge
nest-asyncio              1.5.1              pyhd8ed1ab_0    conda-forge
networkx                  2.6.2              pyhd8ed1ab_0    conda-forge
ninja                     1.10.2               h4bd325d_0    conda-forge
nltk                      3.6.2              pyhd8ed1ab_0    conda-forge
nodejs                    14.17.4              h92b4a50_0    conda-forge
notebook                  6.4.3              pyha770c72_0    conda-forge
numba                     0.53.1           py38h8b71fd7_1    conda-forge
numpy                     1.21.2           py38he2449b9_0    conda-forge
numpydoc                  1.1.0                      py_1    conda-forge
nvtx                      0.2.3            py38h497a2fe_0    conda-forge
oauthlib                  3.1.1              pyhd8ed1ab_0    conda-forge
olefile                   0.46               pyh9f0ad1d_1    conda-forge
openblas                  0.3.17          pthreads_h4748800_1    conda-forge
openjpeg                  2.4.0                hb52868f_1    conda-forge
openslide                 3.4.1                h978ee9a_4    conda-forge
openssl                   1.1.1l               h7f98852_0    conda-forge
orc                       1.6.10               h58a87f1_0    conda-forge
packaging                 21.0               pyhd8ed1ab_0    conda-forge
pandas                    1.2.5            py38h1abd341_0    conda-forge
pandoc                    1.19.2                        0    conda-forge
pandocfilters             1.4.2                      py_1    conda-forge
panel                     0.12.1             pyhd8ed1ab_0    conda-forge
pango                     1.48.9               hb8ff022_0    conda-forge
param                     1.11.1             pyh6c4a22f_0    conda-forge
parquet-cpp               1.5.1                         2    conda-forge
parso                     0.7.1              pyh9f0ad1d_0    conda-forge
partd                     1.2.0              pyhd8ed1ab_0    conda-forge
patchelf                  0.13                 h58526e2_0    conda-forge
pathspec                  0.9.0              pyhd8ed1ab_0    conda-forge
patsy                     0.5.1                      py_0    conda-forge
pcre                      8.45                 h9c3ff4c_0    conda-forge
pcre2                     10.37                h032f7d1_0    conda-forge
perl                      5.32.1          0_h7f98852_perl5    conda-forge
pexpect                   4.8.0              pyh9f0ad1d_2    conda-forge
pickleshare               0.7.5                   py_1003    conda-forge
pillow                    8.3.1            py38h8e6f84c_0    conda-forge
pip                       21.2.4             pyhd8ed1ab_0    conda-forge
pixman                    0.40.0               h36c2ea0_0    conda-forge
pkg-config                0.29.2            h36c2ea0_1008    conda-forge
pkginfo                   1.7.1              pyhd8ed1ab_0    conda-forge
pluggy                    0.13.1           py38h578d9bd_4    conda-forge
pooch                     1.5.1              pyhd8ed1ab_0    conda-forge
poppler                   21.03.0              h93df280_0    conda-forge
poppler-data              0.4.10                        0    conda-forge
postgresql                13.3                 h2510834_0    conda-forge
proj                      8.0.1                h277dcde_0    conda-forge
prometheus_client         0.11.0             pyhd8ed1ab_0    conda-forge
prompt-toolkit            3.0.20             pyha770c72_0    conda-forge
prompt_toolkit            3.0.20               hd8ed1ab_0    conda-forge
protobuf                  3.16.0           py38h709712a_0    conda-forge
psutil                    5.8.0            py38h497a2fe_1    conda-forge
pthread-stubs             0.4               h36c2ea0_1001    conda-forge
ptyprocess                0.7.0              pyhd3deb0d_0    conda-forge
py                        1.10.0             pyhd3deb0d_0    conda-forge
py-cpuinfo                8.0.0              pyhd8ed1ab_0    conda-forge
py-lief                   0.11.5           py38h709712a_0    conda-forge
py-xgboost                1.3.3            py38h06a4308_0  
pyarrow                   5.0.0           py38hed47224_3_cuda    conda-forge
pyasn1                    0.4.8                      py_0    conda-forge
pyasn1-modules            0.2.7                      py_0    conda-forge
pycodestyle               2.6.0              pyh9f0ad1d_0    conda-forge
pycosat                   0.6.3           py38h497a2fe_1006    conda-forge
pycparser                 2.20               pyh9f0ad1d_2    conda-forge
pyct                      0.4.6                      py_0    conda-forge
pyct-core                 0.4.6                      py_0    conda-forge
pydata-sphinx-theme       0.6.3              pyhd8ed1ab_0    conda-forge
pydeck                    0.5.0              pyh9f0ad1d_0    conda-forge
pydocstyle                6.1.1              pyhd8ed1ab_0    conda-forge
pyflakes                  2.2.0              pyh9f0ad1d_0    conda-forge
pygments                  2.10.0             pyhd8ed1ab_0    conda-forge
pyjwt                     2.1.0              pyhd8ed1ab_0    conda-forge
pynndescent               0.5.4              pyh6c4a22f_0    conda-forge
pynvml                    11.0.0             pyhd8ed1ab_0    conda-forge
pyopenssl                 20.0.1             pyhd8ed1ab_0    conda-forge
pyorc                     0.4.0            py38haf60add_5    conda-forge
pyparsing                 2.4.7              pyh9f0ad1d_0    conda-forge
pyproj                    3.1.0            py38h4df08a6_4    conda-forge
pyrsistent                0.17.3           py38h497a2fe_2    conda-forge
pysocks                   1.7.1            py38h578d9bd_3    conda-forge
pytest                    6.2.5            py38h578d9bd_0    conda-forge
pytest-asyncio            0.12.0           py38h32f6830_2    conda-forge
pytest-benchmark          3.4.1              pyhd8ed1ab_0    conda-forge
pytest-cov                2.12.1             pyhd8ed1ab_0    conda-forge
pytest-forked             1.3.0              pyhd3deb0d_0    conda-forge
pytest-timeout            1.4.2              pyh9f0ad1d_0    conda-forge
pytest-xdist              2.3.0              pyhd8ed1ab_0    conda-forge
python                    3.8.10          h49503c6_1_cpython    conda-forge
python-confluent-kafka    1.6.0            py38h497a2fe_1    conda-forge
python-dateutil           2.8.2              pyhd8ed1ab_0    conda-forge
python-jose               3.3.0              pyh6c4a22f_1    conda-forge
python-libarchive-c       3.1              py38h578d9bd_0    conda-forge
python-louvain            0.15               pyhd3deb0d_0    conda-forge
python_abi                3.8                      2_cp38    conda-forge
pytz                      2021.1             pyhd8ed1ab_0    conda-forge
pyu2f                     0.1.5              pyhd8ed1ab_0    conda-forge
pyviz_comms               2.1.0              pyhd8ed1ab_0    conda-forge
pywavelets                1.1.1            py38h5c078b8_3    conda-forge
pyyaml                    5.4.1            py38h497a2fe_1    conda-forge
pyzmq                     22.2.1           py38h2035c66_0    conda-forge
rapidjson                 1.1.0             he1b5a44_1002    conda-forge
re2                       2021.08.01           h9c3ff4c_0    conda-forge
readline                  8.1                  h46c0cb4_0    conda-forge
readme_renderer           27.0               pyh9f0ad1d_0    conda-forge
recommonmark              0.7.1              pyhd8ed1ab_0    conda-forge
regex                     2021.8.28        py38h497a2fe_0    conda-forge
requests                  2.25.1             pyhd3deb0d_0    conda-forge
requests-oauthlib         1.3.0              pyh9f0ad1d_0    conda-forge
requests-toolbelt         0.9.1                      py_0    conda-forge
requests-unixsocket       0.2.0                      py_0    conda-forge
responses                 0.13.4             pyhd8ed1ab_0    conda-forge
rfc3986                   1.5.0              pyhd8ed1ab_0    conda-forge
rhash                     1.4.1                h7f98852_0    conda-forge
ripgrep                   13.0.0               habb4d0f_0    conda-forge
rmm                       21.10.00a210902 cuda_11.0_py38_g8527317_28    rapidsai-nightly
rsa                       4.7.2              pyh44b312d_0    conda-forge
rtree                     0.9.7            py38h02d302b_2    conda-forge
ruamel_yaml               0.15.80         py38h497a2fe_1004    conda-forge
s2n                       1.0.10               h9b69904_0    conda-forge
s3fs                      2021.8.1           pyhd8ed1ab_0    conda-forge
s3transfer                0.4.2              pyhd8ed1ab_0    conda-forge
sacremoses                0.0.43             pyh9f0ad1d_0    conda-forge
scikit-image              0.18.3           py38h43a58ef_0    conda-forge
scikit-learn              0.23.1           py38h3a94b23_0    conda-forge
scipy                     1.6.0            py38hb2138dd_0    conda-forge
seaborn                   0.11.2               hd8ed1ab_0    conda-forge
seaborn-base              0.11.2             pyhd8ed1ab_0    conda-forge
secretstorage             3.3.1            py38h578d9bd_0    conda-forge
send2trash                1.8.0              pyhd8ed1ab_0    conda-forge
setuptools                57.4.0           py38h578d9bd_0    conda-forge
shapely                   1.7.1            py38hb7fe4a8_5    conda-forge
shellcheck                0.7.2                ha770c72_1    conda-forge
simpervisor               0.4                pyhd8ed1ab_0    conda-forge
six                       1.16.0             pyh6c4a22f_0    conda-forge
snappy                    1.1.8                he1b5a44_3    conda-forge
sniffio                   1.2.0            py38h578d9bd_1    conda-forge
snowballstemmer           2.1.0              pyhd8ed1ab_0    conda-forge
sortedcontainers          2.4.0              pyhd8ed1ab_0    conda-forge
soupsieve                 2.0.1                      py_1    conda-forge
spdlog                    1.8.5                h4bd325d_0    conda-forge
sphinx                    4.1.2              pyh6c4a22f_1    conda-forge
sphinx-click              3.0.1              pyhd8ed1ab_0    conda-forge
sphinx-copybutton         0.4.0              pyhd8ed1ab_0    conda-forge
sphinx-markdown-tables    0.0.15             pyhd3deb0d_0    conda-forge
sphinx_rtd_theme          0.5.2              pyhd8ed1ab_1    conda-forge
sphinxcontrib-applehelp   1.0.2                      py_0    conda-forge
sphinxcontrib-devhelp     1.0.2                      py_0    conda-forge
sphinxcontrib-htmlhelp    2.0.0              pyhd8ed1ab_0    conda-forge
sphinxcontrib-jsmath      1.0.1                      py_0    conda-forge
sphinxcontrib-qthelp      1.0.3                      py_0    conda-forge
sphinxcontrib-serializinghtml 1.1.5              pyhd8ed1ab_0    conda-forge
sphinxcontrib-websupport  1.2.4              pyh9f0ad1d_0    conda-forge
sqlite                    3.36.0               h9cd32fc_0    conda-forge
sshpubkeys                3.1.0                      py_0    conda-forge
statsmodels               0.12.2           py38h5c078b8_0    conda-forge
streamz                   0.6.2              pyh44b312d_0    conda-forge
tbb                       2020.2               h4bd325d_4    conda-forge
tblib                     1.7.0              pyhd8ed1ab_0    conda-forge
terminado                 0.11.1           py38h578d9bd_0    conda-forge
testpath                  0.5.0              pyhd8ed1ab_0    conda-forge
threadpoolctl             2.2.0              pyh8a188c0_0    conda-forge
tifffile                  2021.8.30          pyhd8ed1ab_0    conda-forge
tiledb                    2.3.4                he87e0bf_0    conda-forge
tk                        8.6.11               h27826a3_1    conda-forge
tokenizers                0.10.1           py38hb63a372_0    conda-forge
toml                      0.10.2             pyhd8ed1ab_0    conda-forge
toolz                     0.11.1                     py_0    conda-forge
tornado                   6.1              py38h497a2fe_1    conda-forge
tqdm                      4.62.2             pyhd8ed1ab_0    conda-forge
traitlets                 5.1.0              pyhd8ed1ab_0    conda-forge
transformers              4.6.1              pyhd8ed1ab_0    conda-forge
treelite                  2.1.0            py38hdd725b4_0    conda-forge
treelite-runtime          2.1.0                    pypi_0    pypi
twine                     3.4.2              pyhd8ed1ab_0    conda-forge
typed-ast                 1.4.3            py38h497a2fe_0    conda-forge
typing-extensions         3.10.0.0             hd8ed1ab_0    conda-forge
typing_extensions         3.10.0.0           pyha770c72_0    conda-forge
tzcode                    2021a                h7f98852_2    conda-forge
tzdata                    2021a                he74cb21_1    conda-forge
ucx                       1.9.0+gcd9efd3       cuda11.0_0    rapidsai
ucx-proc                  1.0.0                       gpu    rapidsai
ucx-py                    0.22.0a210902   py38_gcd9efd3_18    rapidsai-nightly
umap-learn                0.5.1            py38h578d9bd_1    conda-forge
urllib3                   1.26.6             pyhd8ed1ab_0    conda-forge
wcwidth                   0.2.5              pyh9f0ad1d_2    conda-forge
webencodings              0.5.1                      py_1    conda-forge
websocket-client          0.57.0           py38h578d9bd_4    conda-forge
werkzeug                  2.0.1              pyhd8ed1ab_0    conda-forge
wheel                     0.37.0             pyhd8ed1ab_1    conda-forge
widgetsnbextension        3.5.1            py38h578d9bd_4    conda-forge
wrapt                     1.12.1           py38h497a2fe_3    conda-forge
xarray                    0.19.0             pyhd8ed1ab_1    conda-forge
xerces-c                  3.2.3                h9d8b166_2    conda-forge
xgboost                   1.3.3            py38h06a4308_0  
xmltodict                 0.12.0                     py_0    conda-forge
xorg-kbproto              1.0.7             h7f98852_1002    conda-forge
xorg-libice               1.0.10               h7f98852_0    conda-forge
xorg-libsm                1.2.3             hd9c2040_1000    conda-forge
xorg-libx11               1.7.2                h7f98852_0    conda-forge
xorg-libxau               1.0.9                h7f98852_0    conda-forge
xorg-libxdmcp             1.1.3                h7f98852_0    conda-forge
xorg-libxext              1.3.4                h7f98852_1    conda-forge
xorg-libxrender           0.9.10            h7f98852_1003    conda-forge
xorg-renderproto          0.11.1            h7f98852_1002    conda-forge
xorg-xextproto            7.3.0             h7f98852_1002    conda-forge
xorg-xproto               7.0.31            h7f98852_1007    conda-forge
xz                        5.2.5                h516909a_1    conda-forge
yaml                      0.2.5                h516909a_0    conda-forge
yarl                      1.6.3            py38h497a2fe_2    conda-forge
zeromq                    4.3.4                h9c3ff4c_1    conda-forge
zfp                       0.5.5                h9c3ff4c_5    conda-forge
zict                      2.0.0                      py_0    conda-forge
zipp                      3.5.0              pyhd8ed1ab_0    conda-forge
zlib                      1.2.11            h516909a_1010    conda-forge
zstd                      1.5.0                ha95c52a_0    conda-forge

[hcho3]

@levsnv I now see that the bug remains in the model builder API.

[levsnv]

If, in FIL, we decide to convert empty categorical nodes to dummy numerical nodes (#4314 #4315), this bug will not longer be exercised by FIL and will not require the workaround. Whether that's still a model builder API issue or not is up to you.

[hcho3]

@levsnv I'll still try to fix this bug.

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