Bug#30930132 SUBSCRIPTION REPORTS SENT OUT TOO EARLY BY SUMA DURING NODE RESTART

Problem:
During a node restart the suma block of the restarting node sends
subscription reports to the new subscriber and, if requested, informs
it about all other subscribers. Currently, these reports are sent too
early for the subscribers as they won't be connected to the restarting
node yet. Due to this they miss out these subscription reports during
a node restart.

The MySQL Server depends on these subscription reports to maintain a list
of other MySQL Servers(participants) connected to the cluster. During
schema distribution, the MySQL Server logs the schema change and waits
for these participants to finish applying the changes before returning.
If all the data nodes connected in a cluster are restarted one by one,
the MySQL Servers will miss out on all the subscription reports and thus
end up losing all details about the connected participants.

Solution:
SUMA block changed in order to, during the node restart, wait until all
the subscribers are connected to send out the reports.
Also, the reporting mechanism is optimized to send to subscribers only
the necessary information.

New API leve test added to test_event
New MTR test ndb_participants added

Change-Id: I879fe0fa535f4afd503d85f926f55388ce9f6227

Author: vinc13e

storage/ndb/include/kernel/signaldata/SumaImpl.hpp

@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2003, 2021, Oracle and/or its affiliates.
+   Copyright (c) 2003, 2023, Oracle and/or its affiliates.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License, version 2.0,
@@ -593,6 +593,7 @@ struct SumaContinueB
     ,WAIT_SCAN_TAB_REQ = 10
     ,WAIT_GET_FRAGMENT = 11
     ,SEND_SUB_GCP_COMPLETE_REP = 12
+    ,REPORT_SUBSCRIPTION_SET = 13
   };
 };
 

storage/ndb/src/kernel/blocks/ERROR_codes.txt

@@ -34,7 +34,7 @@ Next TRPMAN 9501
 Next BACKUP 10055
 Next PGMAN 11010
 Next DBTUX 12010
-Next SUMA 13058
+Next SUMA 13060
 Next LGMAN 15002
 Next TSMAN 16002
 Next DBSPJ 17000
@@ -859,6 +859,8 @@ SUMA:
 13051: Delay the DROP_TRIG_IMPL_REQ
 13057: Changing the ndbrequire from checking whether the gci is higher than
        the known gci instead of the next gci
+13058: Delay subscription reporting during node restart + cause API failure
+13059: Delay subscription reporting during node restart
 
 LGMAN:
 -----