So, those bad commands are the following:
- "STOP SLAVE; START SLAVE UNTIL ...;",
- or "STOP SLAVE; START SLAVE;" (to remove an UNTIL condition as an example),
- or "STOP SLAVE; SET GLOBAL slave_parallel_threads=...; START SLAVE;",
- and maybe others.
Note: MySQL also has similar problems, I have just not been bitten by them recently, more in part # 2.