[DO NOT MERGE] Release PR Update version to 1.36.0

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Release History
 
-## 1.36.0 (YYYY-MM-DD)
+## 1.36.0 (2025-08-05)
 
 ### Snowpark Python API Updates
 
@@ -19,24 +19,15 @@
 
 #### New Features
 
-- Added support for creating permanent and immutable UDFs/UDTFs with `DataFrame/Series/GroupBy.apply`, `map`, and `transform` by passing the `snowflake_udf_params` keyword argument. See documentation for details.
-
 #### Improvements
-
 - Hybrid execution row estimate improvements and a reduction of eager calls.
-- Improved performance by deferring row position computation. 
-  - The following operations are currently supported and can benefit from the optimization: `read_snowflake`, `repr`, `loc`, `reset_index`, `merge`, and binary operations.
-  - If a lazy object (e.g., DataFrame or Series) depends on a mix of supported and unsupported operations, the optimization will not be used.
+- Add a new configuration variable to control transfer costs out of Snowflake when using hybrid execution.
+- Added support for creating permanent and immutable UDFs/UDTFs with `DataFrame/Series/GroupBy.apply`, `map`, and `transform` by passing the `snowflake_udf_params` keyword argument. See documentation for details.
 
 #### Bug Fixes
 
 - Fixed an issue where Snowpark pandas plugin would unconditionally disable `AutoSwitchBackend` even when users had explicitly configured it via environment variables or programmatically.
 
-### Snowpark pandas API Updates
-
-#### Improvements
-- Add a new configuration variable to control transfer costs out of Snowflake when using hybrid execution. Lower the default to 100k from 10M.
-
 ## 1.35.0 (2025-07-24)
 
 ### Snowpark Python API Updates

recipe/meta.yaml

@@ -1,5 +1,5 @@
 {% set name = "snowflake-snowpark-python" %}
-{% set version = "1.35.0" %}
+{% set version = "1.36.0" %}
 {% set noarch_build = (os.environ.get('SNOWFLAKE_SNOWPARK_PYTHON_NOARCH_BUILD', 'false')) == 'true' %}
 {% set build_number = os.environ.get('SNOWFLAKE_SNOWPARK_PYTHON_BUILD_NUMBER', 0) %}
 

src/snowflake/snowpark/dataframe.py

@@ -4987,7 +4987,7 @@ def cell_to_str(cell: Any, datatype: DataType) -> str:
                     "{"
                     + ", ".join(
                         [
-                            f"{cell_to_str(k, datatype.key_type or StringType())} -> {cell_to_str(v, datatype.key_type or StringType())}"
+                            f"{cell_to_str(k, datatype.key_type or StringType())} -> {cell_to_str(v, datatype.value_type or StringType())}"
                             for k, v in sorted(cell.items())
                         ]
                     )

src/snowflake/snowpark/modin/plugin/__init__.py

@@ -170,10 +170,7 @@
 )
 from modin.config import AutoSwitchBackend  # isort: skip  # noqa: E402
 
-if (
-    AutoSwitchBackend.get() is not AutoSwitchBackend.default
-    and AutoSwitchBackend.get_value_source() is not ValueSource.DEFAULT
-):
+if AutoSwitchBackend.get_value_source() is ValueSource.DEFAULT:
     AutoSwitchBackend.disable()
 
 # Hybrid Mode Registration

src/snowflake/snowpark/modin/plugin/_internal/concat_utils.py

@@ -336,9 +336,7 @@ def _select_columns(
     )
 
 
-def add_global_ordering_columns(
-    frame: InternalFrame, position: int, dummy_row_pos_mode: bool = False
-) -> InternalFrame:
+def add_global_ordering_columns(frame: InternalFrame, position: int) -> InternalFrame:
     """
     To create global ordering for concat (axis=0) operation we first ensure a
     row position column for local ordering within the frame. Then add another
@@ -353,7 +351,7 @@ def add_global_ordering_columns(
         A new frame with updated ordering columns.
 
     """
-    frame = frame.ensure_row_position_column(dummy_row_pos_mode)
+    frame = frame.ensure_row_position_column()
     ordered_dataframe = frame.ordered_dataframe.sort(
         [OrderingColumn(frame.row_position_snowflake_quoted_identifier)]
     )

src/snowflake/snowpark/modin/plugin/_internal/cut_utils.py

@@ -152,7 +152,6 @@ def compute_bin_indices(
     cuts_frame: InternalFrame,
     n_cuts: int,
     right: bool = True,
-    dummy_row_pos_mode: bool = False,
 ) -> InternalFrame:
     """
     Given a frame of cuts, i.e. borders of bins (strictly increasing) compute for the data in values_frame the index of the bin they fall into.
@@ -184,7 +183,7 @@ def compute_bin_indices(
     # within OrderedDataFrame yet, we use the Snowpark layer directly. This should have no negative
     # consequences when it comes to building lazy graphs, as both cut and qcut are materializing operations.
 
-    cuts_frame = cuts_frame.ensure_row_position_column(dummy_row_pos_mode)
+    cuts_frame = cuts_frame.ensure_row_position_column()
     # perform asof join to find the closet to the cut frame data.
     asof_result = join(
         values_frame,

src/snowflake/snowpark/modin/plugin/_internal/frame.py

@@ -888,19 +888,15 @@ def to_pandas(
     ###########################################################################
     # START: Internal Frame mutation APIs.
     # APIs that creates a new InternalFrame instance, should only be added below
-    def ensure_row_position_column(
-        self, dummy_row_pos_mode: bool = False
-    ) -> "InternalFrame":
+    def ensure_row_position_column(self) -> "InternalFrame":
         """
         Ensure row position column is computed for given internal frame.
 
         Returns:
             A new InternalFrame instance with computed virtual index.
         """
         return InternalFrame.create(
-            ordered_dataframe=self.ordered_dataframe.ensure_row_position_column(
-                dummy_row_pos_mode
-            ),
+            ordered_dataframe=self.ordered_dataframe.ensure_row_position_column(),
             data_column_pandas_labels=self.data_column_pandas_labels,
             data_column_snowflake_quoted_identifiers=self.data_column_snowflake_quoted_identifiers,
             data_column_pandas_index_names=self.data_column_pandas_index_names,
@@ -1354,9 +1350,7 @@ def select_active_columns(self) -> "InternalFrame":
         )
 
     def strip_duplicates(
-        self: "InternalFrame",
-        quoted_identifiers: list[str],
-        dummy_row_pos_mode: bool = False,
+        self: "InternalFrame", quoted_identifiers: list[str]
     ) -> "InternalFrame":
         """
         When assigning frames via index operations for duplicates only the last entry is used, as entries are repeatedly overwritten.
@@ -1370,7 +1364,7 @@ def strip_duplicates(
             new internal frame with unique index.
         """
 
-        frame = self.ensure_row_position_column(dummy_row_pos_mode)
+        frame = self.ensure_row_position_column()
 
         # To remove the duplicates, first compute via windowing over index columns the value of the last row position.
         # with this join then select only the relevant rows. Note that an EXISTS subquery doesn't work here because
@@ -1406,15 +1400,12 @@ def strip_duplicates(
             left_on_cols=[frame.row_position_snowflake_quoted_identifier],
             right_on_cols=[relevant_last_value_row_positions_quoted_identifier],
             how="inner",
-            dummy_row_pos_mode=dummy_row_pos_mode,
         )
 
         # Because we reuse row position to select the relevant columns, we need to
         # generate a new row position column here so locational indexing after this operation
         # continues to work correctly.
-        new_ordered_dataframe = joined_ordered_dataframe.ensure_row_position_column(
-            dummy_row_pos_mode
-        )
+        new_ordered_dataframe = joined_ordered_dataframe.ensure_row_position_column()
         return InternalFrame.create(
             ordered_dataframe=new_ordered_dataframe,
             data_column_pandas_labels=frame.data_column_pandas_labels,

src/snowflake/snowpark/modin/plugin/_internal/generator_utils.py

@@ -79,7 +79,6 @@ def generate_regular_range(
 
 def _create_qc_from_snowpark_dataframe(
     sp_df: DataFrame,
-    dummy_row_pos_mode: bool = False,
 ) -> "snowflake_query_compiler.SnowflakeQueryCompiler":
     """
     Create a Snowflake query compiler from a Snowpark DataFrame, assuming the DataFrame only contains one column.
@@ -90,9 +89,7 @@ def _create_qc_from_snowpark_dataframe(
     Returns:
         A Snowflake query compiler
     """
-    odf = OrderedDataFrame(DataFrameReference(sp_df)).ensure_row_position_column(
-        dummy_row_pos_mode
-    )
+    odf = OrderedDataFrame(DataFrameReference(sp_df)).ensure_row_position_column()
 
     from snowflake.snowpark.modin.plugin.compiler.snowflake_query_compiler import (
         SnowflakeQueryCompiler,

src/snowflake/snowpark/modin/plugin/_internal/get_dummies_utils.py

@@ -184,7 +184,6 @@ def get_dummies_helper(
     columns: list[Hashable],
     prefixes: list[Hashable],
     prefix_sep: str,
-    dummy_row_pos_mode: bool = False,
 ) -> InternalFrame:
     """
     Helper function for get dummies to perform encoding on given columns
@@ -223,9 +222,9 @@ def get_dummies_helper(
             )
 
     # append a lit true column as value column for pivot
-    new_internal_frame = internal_frame.ensure_row_position_column(
-        dummy_row_pos_mode
-    ).append_column(LIT_TRUE_COLUMN_PANDAS_LABEL, pandas_lit(True))
+    new_internal_frame = internal_frame.ensure_row_position_column().append_column(
+        LIT_TRUE_COLUMN_PANDAS_LABEL, pandas_lit(True)
+    )
     # the dummy column is appended as the last data column of the new_internal_frame
     row_position_column_snowflake_quoted_identifier = (
         new_internal_frame.row_position_snowflake_quoted_identifier