… B-tree node. We could not compare a search key K to an index record R if we only knew the…. Q10: When Innodb decides to schedule sequential read-ahead, random read ahead ? HT: InnoDB schedules a sequential read-ahead when it notices an ascending access pattern… – how many random and sequential read aheads can be happening at the same time HT: All read-aheads are performed in the Unix version…