sync records without cursor field in ConcurrentPerPartitionCursor

Author: darynaishchenko

airbyte_cdk/sources/declarative/incremental/concurrent_partition_cursor.py

@@ -448,8 +448,14 @@ def observe(self, record: Record) -> None:
                 "Invalid state as stream slices that are emitted should refer to an existing cursor"
             )
 
+        # if the current record has no cursor value, we cannot meaningfully update the state based on it, so there is nothing more to do
+        try:
+            record_cursor_value = self._cursor_field.extract_value(record)
+        except ValueError:
+            return
+
         record_cursor = self._connector_state_converter.output_format(
-            self._connector_state_converter.parse_value(self._cursor_field.extract_value(record))
+            self._connector_state_converter.parse_value(record_cursor_value)
         )
         self._update_global_cursor(record_cursor)
         if not self._use_global_cursor: