my $logical_restart_lsn_pre = $node_master->safe_psql('postgres',
"SELECT restart_lsn from pg_replication_slots WHERE slot_name = '$logical_slot';");
chomp($logical_restart_lsn_pre);
-# Slot advance should persists across clean restarts.
+# Slot advance should persist across clean restarts.
$node_master->restart;
my $logical_restart_lsn_post = $node_master->safe_psql('postgres',
"SELECT restart_lsn from pg_replication_slots WHERE slot_name = '$logical_slot';");