My OS - CentOS5.3 32bit
3 machine - LDAP, mailbox, smtp

Before, i use zcs-5.0.11_GA_2695.RHEL5 and upgrade to zcs-5.0.18_GA_3011.RHEL5. I found out in mysql_error.log & logger_mysql_error.log got warning messege.

mysql_error.log (before upgrade)
========================

090711 20:18:58 mysqld started
090711 20:18:58 InnoDB: Started; log sequence number 0 2232850312
090711 20:18:58 [Note] /opt/zimbra/mysql/libexec/mysqld: ready for connections.
Version: '5.0.51a-log' socket: '/opt/zimbra/db/mysql.sock' port: 7306 Source distribution
090711 20:21:36 [Note] /opt/zimbra/mysql/libexec/mysqld: Normal shutdown

090711 20:21:36 InnoDB: Starting shutdown...
090711 20:21:38 InnoDB: Shutdown completed; log sequence number 0 2232850332
090711 20:21:38 [Note] /opt/zimbra/mysql/libexec/mysqld: Shutdown complete

090711 20:21:38 mysqld ended

mysql_error.log (after upgrade)
========================

090711 20:26:33 mysqld started
090711 20:26:33 [Warning] option 'max_join_size': unsigned value 18446744073709551615 adjusted to 4294967295
090711 20:26:33 [Warning] option 'max_join_size': unsigned value 18446744073709551615 adjusted to 4294967295
090711 20:26:34 InnoDB: Started; log sequence number 0 2232850332
090711 20:26:34 [Note] /opt/zimbra/mysql/libexec/mysqld: ready for connections.
Version: '5.0.67-log' socket: '/opt/zimbra/db/mysql.sock' port: 7306 Source distribution
090711 20:26:59 [Note] /opt/zimbra/mysql/libexec/mysqld: Normal shutdown

090711 20:26:59 InnoDB: Starting shutdown...
090711 20:27:01 InnoDB: Shutdown completed; log sequence number 0 2232850589
090711 20:27:01 [Note] /opt/zimbra/mysql/libexec/mysqld: Shutdown complete

090711 20:27:01 mysqld ended

090711 20:30:34 mysqld started
090711 20:30:34 [Warning] option 'max_join_size': unsigned value 18446744073709551615 adjusted to 4294967295
090711 20:30:34 [Warning] option 'max_join_size': unsigned value 18446744073709551615 adjusted to 4294967295
090711 20:30:35 InnoDB: Started; log sequence number 0 2232850589
090711 20:30:35 [Note] /opt/zimbra/mysql/libexec/mysqld: ready for connections.
Version: '5.0.67-log' socket: '/opt/zimbra/db/mysql.sock' port: 7306 Source distribution
090711 20:49:34 [Note] /opt/zimbra/mysql/libexec/mysqld: Normal shutdown

090711 20:49:34 InnoDB: Starting shutdown...
090711 20:49:36 InnoDB: Shutdown completed; log sequence number 0 2233251228
090711 20:49:36 [Note] /opt/zimbra/mysql/libexec/mysqld: Shutdown complete

090711 20:49:36 mysqld ended

logger_mysql_error.log (before upgrade)
========================
Starting mysqld daemon with databases from /opt/zimbra/logger/db/data
090711 20:15:31 mysqld started
090711 20:15:32 InnoDB: Started; log sequence number 0 43655
090711 20:15:32 [Note] /opt/zimbra/logger/mysql/libexec/mysqld: ready for connections.
Version: '5.0.51a-log' socket: '/opt/zimbra/logger/db/mysql.sock' port: 7307 Source distribution
090711 20:17:19 [Note] /opt/zimbra/logger/mysql/libexec/mysqld: Normal shutdown

090711 20:17:19 InnoDB: Starting shutdown...
090711 20:17:20 InnoDB: Shutdown completed; log sequence number 0 43655
090711 20:17:20 [Note] /opt/zimbra/logger/mysql/libexec/mysqld: Shutdown complete

STOPPING server from pid file /opt/zimbra/logger/db/mysql.pid
090711 20:17:20 mysqld ended
090711 20:17:20 mysqld ended

logger_mysql_error.log (after upgrade)
========================
Starting mysqld daemon with databases from /opt/zimbra/logger/db/data
090711 20:26:46 mysqld started
090711 20:26:46 [Warning] option 'max_join_size': unsigned value 18446744073709551615 adjusted to 4294967295
090711 20:26:46 [Warning] option 'max_join_size': unsigned value 18446744073709551615 adjusted to 4294967295
090711 20:26:46 InnoDB: Started; log sequence number 0 43655
090711 20:26:46 [Note] /opt/zimbra/logger/mysql/libexec/mysqld: ready for connections.
Version: '5.0.67-log' socket: '/opt/zimbra/logger/db/mysql.sock' port: 7307 Source distribution
090711 20:27:21 [Note] /opt/zimbra/logger/mysql/libexec/mysqld: Normal shutdown

090711 20:27:21 InnoDB: Starting shutdown...
090711 20:27:21 InnoDB: Shutdown completed; log sequence number 0 43655
090711 20:27:21 [Note] /opt/zimbra/logger/mysql/libexec/mysqld: Shutdown complete

STOPPING server from pid file /opt/zimbra/logger/db/mysql.pid
090711 20:27:21 mysqld ended
090711 20:27:21 mysqld ended


Starting mysqld daemon with databases from /opt/zimbra/logger/db/data
090711 20:30:33 mysqld started
090711 20:30:33 [Warning] option 'max_join_size': unsigned value 18446744073709551615 adjusted to 4294967295
090711 20:30:33 [Warning] option 'max_join_size': unsigned value 18446744073709551615 adjusted to 4294967295
090711 20:30:33 InnoDB: Started; log sequence number 0 43655
090711 20:30:33 [Note] /opt/zimbra/logger/mysql/libexec/mysqld: ready for connections.
Version: '5.0.67-log' socket: '/opt/zimbra/logger/db/mysql.sock' port: 7307 Source distribution
090711 20:49:38 [Note] /opt/zimbra/logger/mysql/libexec/mysqld: Normal shutdown

090711 20:49:40 InnoDB: Starting shutdown...
090711 20:49:41 InnoDB: Shutdown completed; log sequence number 0 43655
090711 20:49:41 [Note] /opt/zimbra/logger/mysql/libexec/mysqld: Shutdown complete

STOPPING server from pid file /opt/zimbra/logger/db/mysql.pid
090711 20:49:41 mysqld ended
090711 20:49:41 mysqld ended



sqlMigration.log
============
Sat Jul 11 20:26:44 2009: SELECT value FROM config WHERE name = 'db.version'
Sat Jul 11 20:26:45 2009: 53
Sat Jul 11 20:26:56 2009: SELECT value FROM config WHERE name = 'db.version'
Sat Jul 11 20:26:57 2009: 5
Sat Jul 11 20:26:57 2009: SELECT value FROM config WHERE name = 'redolog.version'
Sat Jul 11 20:26:57 2009: 1.23
Sat Jul 11 20:26:58 2009: SELECT value FROM config WHERE name = 'redolog.version'
Sat Jul 11 20:26:58 2009: 1.23
Sat Jul 11 20:26:58 2009: Verified redolog version 1.23.
Sat Jul 11 20:26:58 2009: Updating Redolog schema version from 1.23 to 1.24.
Sat Jul 11 20:26:58 2009: UPDATE zimbra.config SET value = '1.24' WHERE name = 'redolog.version';

Sat Jul 11 20:27:14 2009: SELECT value FROM config WHERE name = 'db.version'
Sat Jul 11 20:27:14 2009: 5
Sat Jul 11 20:27:14 2009: Verified schema version 5.
Sat Jul 11 20:27:14 2009: Modifying postfix_qid size
Sat Jul 11 20:27:14 2009: alter table raw_logs modify postfix_qid VARCHAR(25);
alter table mta modify qid VARCHAR(25);

Sat Jul 11 20:27:19 2009: SELECT value FROM config WHERE name = 'db.version'
Sat Jul 11 20:27:20 2009: 5
Sat Jul 11 20:27:20 2009: Verified schema version 5.
Sat Jul 11 20:27:20 2009: Updating logger DB schema version from 5 to 6.
Sat Jul 11 20:27:20 2009: UPDATE zimbra_logger.config SET value = '6' WHERE name = 'db.version';

================================================== ========

what is this mean?
090711 20:30:33 [Warning] option 'max_join_size': unsigned value 18446744073709551615 adjusted to 4294967295

What is the problem?

FYI, during the upgrading i skip doing zmdbintegrityreport. But after upgrade, i run /opt/zimbra/libexec/zmdbintegrityreport -m and /opt/zimbra/libexec/zmdbintegrityreport -l. No error or warning message found.