I am able to reproduce this with pt-table-checksum. Innodb engine is completely disabled in my.cnf.
$ pt-table-checksum 05-07T18:56:14 Use of uninitialized value $curr_lwt in numeric gt (>) at /usr/bin/pt-table-checksum line 6018.
SHOW SESSION VARIABLES LIKE 'innodb_lock_wait_timeout' query returns nothing in this case.
I am able to reproduce this with pt-table-checksum. Innodb engine is completely disabled in my.cnf.
$ pt-table-checksum pt-table- checksum line 6018.
05-07T18:56:14 Use of uninitialized value $curr_lwt in numeric gt (>) at /usr/bin/
SHOW SESSION VARIABLES LIKE 'innodb_ lock_wait_ timeout' query returns nothing in this case.