[SEDONA-680] Remove rasterio from mandatory dependencies

.github/workflows/python.yml

@@ -143,14 +143,25 @@ jobs:
       - env:
           PYTHON_VERSION: ${{ matrix.python }}
         run: find spark-shaded/target -name sedona-*.jar -exec cp {} ${VENV_PATH}/lib/python${PYTHON_VERSION}/site-packages/pyspark/jars/ \;
-      - env:
+      - name: Run tests
+        env:
           PYTHON_VERSION: ${{ matrix.python }}
         run: |
           export SPARK_HOME=${VENV_PATH}/lib/python${PYTHON_VERSION}/site-packages/pyspark
           cd python
           source ${VENV_PATH}/bin/activate
-          pytest tests
-      - env:
+          pytest -v tests
+      - name: Run basic tests without rasterio
+        env:
+          PYTHON_VERSION: ${{ matrix.python }}
+        run: |
+          export SPARK_HOME=${VENV_PATH}/lib/python${PYTHON_VERSION}/site-packages/pyspark
+          cd python
+          source ${VENV_PATH}/bin/activate
+          pip uninstall -y rasterio
+          pytest -v tests/core/test_rdd.py tests/sql/test_dataframe_api.py
+      - name: Run Spark Connect tests
+        env:
           PYTHON_VERSION: ${{ matrix.python }}
         run: |
           if [ ! -f "${VENV_PATH}/lib/python${PYTHON_VERSION}/site-packages/pyspark/sbin/start-connect-server.sh" ]
@@ -165,4 +176,4 @@ jobs:
           cd python
           source ${VENV_PATH}/bin/activate
           pip install "pyspark[connect]==${SPARK_VERSION}"
-          pytest tests/sql/test_dataframe_api.py
+          pytest -v tests/sql/test_dataframe_api.py

docs/tutorial/raster.md

@@ -615,6 +615,9 @@ raster.as_numpy_masked() # numpy array with nodata values masked as nan
 If you want to work with the raster data using `rasterio`, you can retrieve a `rasterio.DatasetReader` object using the
 `as_rasterio` method.
 
+!!!note
+    You need to have the `rasterio` package installed (version >= 1.2.10) to use this method. You can install it using `pip install rasterio`.
+
 ```python
 ds = raster.as_rasterio()  # rasterio.DatasetReader object
 # Work with the raster using rasterio

python/sedona/sql/types.py

@@ -17,8 +17,21 @@
 
 from pyspark.sql.types import BinaryType, UserDefinedType
 
-from ..raster import raster_serde
-from ..raster.sedona_raster import SedonaRaster
+# Only support RasterType when rasterio is installed
+try:
+    import rasterio
+except ImportError:
+    rasterio = None
+
+if rasterio is not None:
+    from ..raster import raster_serde
+    from ..raster.sedona_raster import SedonaRaster
+else:
+    # We'll skip RasterType UDT registration and raise error when deserializing
+    # RasterUDT objects if rasterio is not installed
+    raster_serde = None
+    SedonaRaster = None
+
 from ..utils import geometry_serde
 
 
@@ -57,7 +70,12 @@ def serialize(self, obj):
         raise NotImplementedError("RasterType.serialize is not implemented yet")
 
     def deserialize(self, datum):
-        return raster_serde.deserialize(datum)
+        if raster_serde is not None:
+            return raster_serde.deserialize(datum)
+        else:
+            raise NotImplementedError(
+                "rasterio is not installed. Please install it to support RasterType deserialization"
+            )
 
     @classmethod
     def module(cls):
@@ -71,4 +89,5 @@ def scalaUDT(cls):
         return "org.apache.spark.sql.sedona_sql.UDT.RasterUDT"
 
 
-SedonaRaster.__UDT__ = RasterType()
+if SedonaRaster is not None:
+    SedonaRaster.__UDT__ = RasterType()

python/setup.py

@@ -58,12 +58,18 @@
     long_description=long_description,
     long_description_content_type="text/markdown",
     python_requires=">=3.6",
-    install_requires=["attrs", "shapely>=1.7.0", "rasterio>=1.2.10"],
+    install_requires=["attrs", "shapely>=1.7.0"],
     extras_require={
         "spark": ["pyspark>=2.3.0"],
         "pydeck-map": ["geopandas", "pydeck==0.8.0"],
         "kepler-map": ["geopandas", "keplergl==0.3.2"],
-        "all": ["pyspark>=2.3.0", "geopandas", "pydeck==0.8.0", "keplergl==0.3.2"],
+        "all": [
+            "pyspark>=2.3.0",
+            "geopandas",
+            "pydeck==0.8.0",
+            "keplergl==0.3.2",
+            "rasterio>=1.2.10",
+        ],
     },
     project_urls={
         "Documentation": "https://sedona.apache.org",