Galy Lee <[EMAIL PROTECTED]> writes:
> If we can stop at any point, we can make maintenance memory large
> sufficient to contain all of the dead tuples, then we only need to
> clean index for once. No matter how many times vacuum stops,
> indexes are cleaned for once.

I beg your pardon?  You're the one who's been harping on the
table-so-large-it-takes-days-to-vacuum scenario.  How you figure that
you can store all the dead TIDs in working memory?

                        regards, tom lane

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