Merge branch 'main' into backend-refactors

Author: varun-edachali-dbx

src/databricks/sql/utils.py

@@ -47,6 +47,10 @@ def next_n_rows(self, num_rows: int):
     def remaining_rows(self):
         pass
 
+    @abstractmethod
+    def close(self):
+        pass
+
 
 class ResultSetQueueFactory(ABC):
     @staticmethod
@@ -159,6 +163,9 @@ def remaining_rows(self):
         self.cur_row_index += slice.num_rows
         return slice
 
+    def close(self):
+        return
+
 
 class ArrowQueue(ResultSetQueue):
     def __init__(
@@ -195,6 +202,9 @@ def remaining_rows(self) -> "pyarrow.Table":
         self.cur_row_index += slice.num_rows
         return slice
 
+    def close(self):
+        return
+
 
 class CloudFetchQueue(ResultSetQueue):
     def __init__(
@@ -347,6 +357,9 @@ def _create_empty_table(self) -> "pyarrow.Table":
         # Create a 0-row table with just the schema bytes
         return create_arrow_table_from_arrow_file(self.schema_bytes, self.description)
 
+    def close(self):
+        self.download_manager._shutdown_manager()
+
 
 ExecuteResponse = namedtuple(
     "ExecuteResponse",