change README & ci-tests & examples

.github/workflows/ci-notebooks.yml

@@ -55,6 +55,10 @@ jobs:
       - run: conda install black flake8 flake8-print jupyter nbformat nbconvert -c conda-forge
         if: matrix.execution == 'omnisci_on_native'
       - run: pip list
+      - run: |
+          conda info
+          conda list
+        if: matrix.execution == 'omnisci_on_native'
       - run: |
           black --check --diff examples/tutorial/jupyter/execution/${{ matrix.execution }}/test/test_notebooks.py
           black --check --diff examples/tutorial/jupyter/execution/test/utils.py

examples/tutorial/jupyter/README.md

@@ -4,10 +4,11 @@ Currently we provide tutorial notebooks for the following execution backends:
 
 - [PandasOnRay](https://modin.readthedocs.io/en/latest/development/using_pandas_on_ray.html)
 - [PandasOnDask](https://modin.readthedocs.io/en/latest/development/using_pandas_on_dask.html)
+- [OmnisciOnNative](https://modin.readthedocs.io/en/latest/development/using_omnisci.html)
 
 ## Creating a development environment
 
-To get required dependencies for these Jupyter Notebooks
+To get required dependencies for `PandasOnRay` and  `PandasOnDask` Jupyter Notebooks
 you should create a development environment with `pip`
 using `requirements.txt` file located in the respective directory:
 
@@ -28,11 +29,11 @@ please install every package listed in `requirements.txt` file individually with
 
 To get required dependencies for `OmnisciOnNative` Jupyter Notebooks
 you should create a development environment with `conda`
-using `jupyter_omnisci_env.yml` file located in the current directory:
+using `jupyter_omnisci_env.yml` file located in the respective directory:
 
 ```bash
 conda config --set channel_priority strict
-conda env create -f jupyter_omnisci_env.yml
+conda env create -f execution/omnisci_on_native/jupyter_omnisci_env.yml
 ```
 
 After the environment is created it needs to be activated:
@@ -41,7 +42,7 @@ After the environment is created it needs to be activated:
 conda activate jupyter_modin_on_omnisci
 ```
 
-**Note:** Notebook for `OmnisciOnNative` working only on Linux.
+**Note:** `Omnisci` engine is available on Linux only for now.
 
 ## Run Jupyter Notebooks
 

examples/tutorial/jupyter/execution/omnisci_on_native/local/exercise_1.ipynb

@@ -176,6 +176,8 @@
    "metadata": {},
    "outputs": [],
    "source": [
+    "# When working with non-string column labels it could happen that some backend logic would try to insert a column \n",
+    "# with a string name to the frame, so we do add_prefix()\n",
     "df = df.add_prefix(\"col\")"
    ]
   },
@@ -189,16 +191,6 @@
     "df.head(10)"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "# Print the DataFrame.\n",
-    "df"
-   ]
-  },
   {
    "cell_type": "code",
    "execution_count": null,

examples/tutorial/jupyter/execution/omnisci_on_native/local/exercise_2.ipynb

@@ -190,7 +190,7 @@
    "source": [
     "start = time.time()\n",
     "\n",
-    "pandas_sum = (pandas_df[['VendorID', 'passenger_count', 'trip_distance', 'pickup_longitude', 'pickup_latitude', 'RateCodeID', 'dropoff_longitude', 'dropoff_latitude', 'payment_type', 'fare_amount', 'extra', 'mta_tax', 'tip_amount', 'tolls_amount', 'improvement_surcharge', 'total_amount']]).sum()\n",
+    "pandas_sum = (pandas_df[:500000]).sum()\n",
     "\n",
     "end = time.time()\n",
     "pandas_duration = end - start\n",
@@ -206,7 +206,7 @@
    "source": [
     "start = time.time()\n",
     "\n",
-    "modin_sum = (modin_df[['VendorID', 'passenger_count', 'trip_distance', 'pickup_longitude', 'pickup_latitude', 'RateCodeID', 'dropoff_longitude', 'dropoff_latitude', 'payment_type', 'fare_amount', 'extra', 'mta_tax', 'tip_amount', 'tolls_amount', 'improvement_surcharge', 'total_amount']]).sum()\n",
+    "modin_sum = (modin_df[:500000]).sum()\n",
     "\n",
     "end = time.time()\n",
     "modin_duration = end - start\n",