check linux cleanup

Author: gargsaumya

mssql_python/cursor.py

@@ -564,10 +564,19 @@ def _reset_cursor(self) -> None:
         """
         Reset the DDBC statement handle.
         """
+        # Clear cache references before resetting
+        self._cached_column_map = None
+        self._cached_converter_map = None
+        
         if self.hstmt:
-            self.hstmt.free()
-            self.hstmt = None
-            log("debug", "SQLFreeHandle succeeded")
+            try:
+                self.hstmt.free()
+                self.hstmt = None
+                log("debug", "SQLFreeHandle succeeded")
+            except Exception as e:  # pylint: disable=broad-exception-caught
+                # Handle case where connection might already be closed
+                log("warning", "Error freeing statement handle during reset: %s", e)
+                self.hstmt = None
 
         self._clear_rownumber()
 
@@ -590,6 +599,10 @@ def close(self) -> None:
         # Clear messages per DBAPI
         self.messages = []
 
+        # Clear cache references before cleanup to prevent issues during connection close
+        self._cached_column_map = None
+        self._cached_converter_map = None
+
         # Remove this cursor from the connection's tracking
         if (
             hasattr(self, "connection")
@@ -602,9 +615,15 @@ def close(self) -> None:
                 log("warning", "Error removing cursor from connection tracking: %s", e)
 
         if self.hstmt:
-            self.hstmt.free()
-            self.hstmt = None
-            log("debug", "SQLFreeHandle succeeded")
+            try:
+                self.hstmt.free()
+                self.hstmt = None
+                log("debug", "SQLFreeHandle succeeded")
+            except Exception as e:  # pylint: disable=broad-exception-caught
+                # On Linux, freeing statement handles after connection is closed can hang
+                # Log the error but don't propagate to avoid hangs
+                log("warning", "Error freeing statement handle (connection may be closed): %s", e)
+                self.hstmt = None
         self._clear_rownumber()
         self.closed = True