pt-config-diff does not handle multi-valued attributes

[Sheeri K. Cabral]

# pt-config-diff localhost /etc/my.cnf
2 config differences
Variable addons3.versioncheck.db.phx1.mozilla.com /etc/my.cnf
========================= ========================= =========================
replicate_do_table percona.schema_checksu... percona.schema_checksu...
replicate_wild_do_table mysql.*,percona.* percona.*

MariaDB [(none)]> show variables like '%wild%';
+-----------------------------+-------------------+
| Variable_name | Value |
+-----------------------------+-------------------+
| replicate_wild_do_table | mysql.*,percona.* |
| replicate_wild_ignore_table | |
+-----------------------------+-------------------+
2 rows in set (0.00 sec)

MariaDB [(none)]>

# grep wild /etc/my.cnf
replicate_wild_do_table=mysql.*
replicate_wild_do_table=percona.*

So pt-config-diff is not handling the multi-valued attribute replicate_wild_do_table (and also is having trouble with replicate_do_table for the same reason.

This has manifested itself only recently because in Percona 5.1, these values are not system variables:

mysql> show variables like '%wild%';
Empty set (0.01 sec)

But in MariaDB 5.5, they are (see above).

[Shahriyar Rzayev (rzayev-sehriyar)]

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PT-1105