MDEV-22351 RESET MASTER should be propagated to InnoDBbb-10.3-marko

Ever since commit 947efe17ed8188ca4feef6deb0c2831a246b5c8f
InnoDB no longer writes binlog position in one place.
It will not at all be written to the TRX_SYS page, and
instead it will be written to the undo log header page that
changes the transaction state.

ha_reset_master(), trx_rseg_reset_binlog_pos(): Reset the
binlog information in InnoDB when RESET MASTER is invoked.

reset_master(): Invoke ha_reset_master() to discard the
information in InnoDB.

1 files changed, 17 insertions, 1 deletions

diff --git a/sql/handler.cc b/sql/handler.cc
index 6bd8938fdca..e6adb4fdd93 100644
--- a/sql/handler.cc
+++ b/sql/handler.cc
@@ -1,5 +1,5 @@
 /* Copyright (c) 2000, 2016, Oracle and/or its affiliates.
-   Copyright (c) 2009, 2019, MariaDB Corporation.
+   Copyright (c) 2009, 2020, MariaDB Corporation.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -747,6 +747,22 @@ void ha_drop_database(char* path)
 }
 
 
+static my_bool reset_master_handlerton(THD *, plugin_ref plugin, void *)
+{
+  handlerton *hton= plugin_hton(plugin);
+  if (hton->reset_master)
+    hton->reset_master();
+  return FALSE;
+}
+
+
+void ha_reset_master()
+{
+  plugin_foreach(NULL, reset_master_handlerton, MYSQL_STORAGE_ENGINE_PLUGIN,
+                 NULL);
+}
+
+
 static my_bool checkpoint_state_handlerton(THD *unused1, plugin_ref plugin,
                                            void *disable)
 {