Question: Exercise 15.4.3: From Database Systems 2nd Edition. Suppose that the second pass of an algorithm described in this section does not need all M buffers,

Exercise 15.4.3: From Database Systems 2nd Edition.

Suppose that the second pass of an algorithm described in this section does not need all M buffers, because there are fewer than M sublists. How might we save disk I/O s by using the extra buffers?

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