Use self.table_metadata in transaction (#985)

Author: HonahX

pyiceberg/table/__init__.py

@@ -331,10 +331,10 @@ def upgrade_table_version(self, format_version: TableVersion) -> Transaction:
         if format_version not in {1, 2}:
             raise ValueError(f"Unsupported table format version: {format_version}")
 
-        if format_version < self._table.metadata.format_version:
-            raise ValueError(f"Cannot downgrade v{self._table.metadata.format_version} table to v{format_version}")
+        if format_version < self.table_metadata.format_version:
+            raise ValueError(f"Cannot downgrade v{self.table_metadata.format_version} table to v{format_version}")
 
-        if format_version > self._table.metadata.format_version:
+        if format_version > self.table_metadata.format_version:
             return self._apply((UpgradeFormatVersionUpdate(format_version=format_version),))
 
         return self
@@ -452,7 +452,7 @@ def update_schema(self, allow_incompatible_changes: bool = False, case_sensitive
             self,
             allow_incompatible_changes=allow_incompatible_changes,
             case_sensitive=case_sensitive,
-            name_mapping=self._table.name_mapping(),
+            name_mapping=self.table_metadata.name_mapping(),
         )
 
     def update_snapshot(self, snapshot_properties: Dict[str, str] = EMPTY_DICT) -> UpdateSnapshot:
@@ -489,7 +489,7 @@ def append(self, df: pa.Table, snapshot_properties: Dict[str, str] = EMPTY_DICT)
             )
         downcast_ns_timestamp_to_us = Config().get_bool(DOWNCAST_NS_TIMESTAMP_TO_US_ON_WRITE) or False
         _check_pyarrow_schema_compatible(
-            self._table.schema(), provided_schema=df.schema, downcast_ns_timestamp_to_us=downcast_ns_timestamp_to_us
+            self.table_metadata.schema(), provided_schema=df.schema, downcast_ns_timestamp_to_us=downcast_ns_timestamp_to_us
         )
 
         manifest_merge_enabled = PropertyUtil.property_as_bool(
@@ -504,7 +504,7 @@ def append(self, df: pa.Table, snapshot_properties: Dict[str, str] = EMPTY_DICT)
             # skip writing data files if the dataframe is empty
             if df.shape[0] > 0:
                 data_files = _dataframe_to_data_files(
-                    table_metadata=self._table.metadata, write_uuid=append_files.commit_uuid, df=df, io=self._table.io
+                    table_metadata=self.table_metadata, write_uuid=append_files.commit_uuid, df=df, io=self._table.io
                 )
                 for data_file in data_files:
                     append_files.append_data_file(data_file)
@@ -548,7 +548,7 @@ def overwrite(
             )
         downcast_ns_timestamp_to_us = Config().get_bool(DOWNCAST_NS_TIMESTAMP_TO_US_ON_WRITE) or False
         _check_pyarrow_schema_compatible(
-            self._table.schema(), provided_schema=df.schema, downcast_ns_timestamp_to_us=downcast_ns_timestamp_to_us
+            self.table_metadata.schema(), provided_schema=df.schema, downcast_ns_timestamp_to_us=downcast_ns_timestamp_to_us
         )
 
         self.delete(delete_filter=overwrite_filter, snapshot_properties=snapshot_properties)
@@ -557,7 +557,7 @@ def overwrite(
             # skip writing data files if the dataframe is empty
             if df.shape[0] > 0:
                 data_files = _dataframe_to_data_files(
-                    table_metadata=self._table.metadata, write_uuid=update_snapshot.commit_uuid, df=df, io=self._table.io
+                    table_metadata=self.table_metadata, write_uuid=update_snapshot.commit_uuid, df=df, io=self._table.io
                 )
                 for data_file in data_files:
                     update_snapshot.append_data_file(data_file)
@@ -595,7 +595,7 @@ def delete(self, delete_filter: Union[str, BooleanExpression], snapshot_properti
 
         # Check if there are any files that require an actual rewrite of a data file
         if delete_snapshot.rewrites_needed is True:
-            bound_delete_filter = bind(self._table.schema(), delete_filter, case_sensitive=True)
+            bound_delete_filter = bind(self.table_metadata.schema(), delete_filter, case_sensitive=True)
             preserve_row_filter = _expression_to_complementary_pyarrow(bound_delete_filter)
 
             files = self._scan(row_filter=delete_filter).plan_files()
@@ -614,7 +614,7 @@ def delete(self, delete_filter: Union[str, BooleanExpression], snapshot_properti
             for original_file in files:
                 df = project_table(
                     tasks=[original_file],
-                    table_metadata=self._table.metadata,
+                    table_metadata=self.table_metadata,
                     io=self._table.io,
                     row_filter=AlwaysTrue(),
                     projected_schema=self.table_metadata.schema(),
@@ -629,7 +629,7 @@ def delete(self, delete_filter: Union[str, BooleanExpression], snapshot_properti
                             _dataframe_to_data_files(
                                 io=self._table.io,
                                 df=filtered_df,
-                                table_metadata=self._table.metadata,
+                                table_metadata=self.table_metadata,
                                 write_uuid=commit_uuid,
                                 counter=counter,
                             )
@@ -658,11 +658,13 @@ def add_files(self, file_paths: List[str], snapshot_properties: Dict[str, str] =
         Raises:
             FileNotFoundError: If the file does not exist.
         """
-        if self._table.name_mapping() is None:
-            self.set_properties(**{TableProperties.DEFAULT_NAME_MAPPING: self._table.schema().name_mapping.model_dump_json()})
+        if self.table_metadata.name_mapping() is None:
+            self.set_properties(**{
+                TableProperties.DEFAULT_NAME_MAPPING: self.table_metadata.schema().name_mapping.model_dump_json()
+            })
         with self.update_snapshot(snapshot_properties=snapshot_properties).fast_append() as update_snapshot:
             data_files = _parquet_files_to_data_files(
-                table_metadata=self._table.metadata, file_paths=file_paths, io=self._table.io
+                table_metadata=self.table_metadata, file_paths=file_paths, io=self._table.io
             )
             for data_file in data_files:
                 update_snapshot.append_data_file(data_file)

tests/catalog/test_sql.py

@@ -1421,9 +1421,9 @@ def test_write_and_evolve(catalog: SqlCatalog, format_version: int) -> None:
         with txn.update_schema() as schema_txn:
             schema_txn.union_by_name(pa_table_with_column.schema)
 
-        with txn.update_snapshot().fast_append() as snapshot_update:
-            for data_file in _dataframe_to_data_files(table_metadata=txn.table_metadata, df=pa_table_with_column, io=tbl.io):
-                snapshot_update.append_data_file(data_file)
+        txn.append(pa_table_with_column)
+        txn.overwrite(pa_table_with_column)
+        txn.delete("foo = 'a'")
 
 
 @pytest.mark.parametrize(

tests/integration/test_writes/test_writes.py

@@ -718,9 +718,9 @@ def test_write_and_evolve(session_catalog: Catalog, format_version: int) -> None
         with txn.update_schema() as schema_txn:
             schema_txn.union_by_name(pa_table_with_column.schema)
 
-        with txn.update_snapshot().fast_append() as snapshot_update:
-            for data_file in _dataframe_to_data_files(table_metadata=txn.table_metadata, df=pa_table_with_column, io=tbl.io):
-                snapshot_update.append_data_file(data_file)
+        txn.append(pa_table_with_column)
+        txn.overwrite(pa_table_with_column)
+        txn.delete("foo = 'a'")
 
 
 @pytest.mark.integration