set @save_s3_protocol_version=@@global.s3_protocol_version; set @@global.s3_protocol_version="Original"; create table t1 (pk int primary key, a int); insert into t1 values (1,1),(2,2),(3,3),(4,4); alter table t1 engine=S3; drop table t1; set @@global.s3_protocol_version=@save_s3_protocol_version;