auth 4.2 upgrade docs: note default-api-rectify change

diff --git a/docs/upgrading.rst b/docs/upgrading.rst
index 76dea765f9988ff11ebd7abb716616e12efe66e9..d03c2c0aeec625b766507df7d1556088dfbd83ff 100644 (file)
--- a/docs/upgrading.rst
+++ b/docs/upgrading.rst
@@ -261,6 +261,7 @@ You could accomplish that by deleting all records in the zone with an SQL query
 - The gsqlite3 backend, and the DNSSEC database for the BIND backend, have a new journal-mode setting. This setting defaults to `WAL <https://www.sqlite.org/wal.html>`_; older versions of PowerDNS did not set the journal mode, which means they used the SQLite default of DELETE.
 - Autoserial support has been removed. The ``change_date`` column has been removed from the ``records`` table in all gsql backends, but leaving it in is harmless.
 - The :doc:`Generic PostgreSQL backend <backends/generic-postgresql>` schema has changed: the ``notified_serial`` column type in the ``domains`` table has been changed from ``INT DEFAULT NULL`` to ``BIGINT DEFAULT NULL``: ``ALTER TABLE domains ALTER notified_serial TYPE bigint USING CASE WHEN notified_serial >= 0 THEN notified_serial::bigint END;``
+- Rectification after API changes is now default (:ref:`setting-default-api-rectify`). If you do mutations in large zones, you may notice a slowdown.
 
 4.1.X to 4.1.14
 ---------------