Any danger to a MySQL master if the slave replica is locked down for an extended period of time? I am using 5.6.xx.
Things like full replication queues preventing transaction commit is bad. (this happens in some NoSQL DB w.r.t. writes) So are slowed master transactions.
I plan on making a change to my replica schema (recollation) that will take upwards of an hour of table lockdown. When completed, I will promote it, and in this way (hopefully) make a live schema change. During this hour, no replication will occur, and whatever queue/journal system MySQL uses will surely grow.