Comment 1 for bug 1735111

How to reproduce:
I'm starting master-slave setup from:

https://github.com/ihanick/mysql-replica

with docker-compose up

docker exec -it mysqlreplica_master_1 bash

apt-get update;apt-get install -y percona-toolkit

using your plugin, adopted to my structure: my $row = $dbh->selectrow_arrayref(q(SELECT unix_timestamp(), @@hostname));

/usr/bin/pt-online-schema-change --no-check-alter --no-check-replication-filters --execute --chunk-size-limit=0 --analyze-before-swap --default-engine --plugin=./pt-osc-plugin.pm --recursion-method dsn=t=test.dsns --max-lag 3 --max-load Threads_running=50 --critical-load Threads_running=500 --alter "FORCE" D=test,t=t,u=root,p=master_passw0rd

Only single record in dsns table: insert into dsns values (1,1, 'h=172.19.0.2,u=root,p=slave_passw0rd');

table test.t structure is not important, create table t (c int, primary key(c)) engine=innodb;

root@a0702c18b089:~# /usr/bin/pt-online-schema-change --no-check-alter --no-check-replication-filters --execute --chunk-size-limit=0 --analyze-before-swap --default-engine --plugin=./pt-osc-plugin.pm --recursion-method dsn=t=test.dsns --max-lag 3 --max-load Threads_running=50 --critical-load