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It did that to verify that the page was an overflow page rather than anything else, but that means that checking the status of all the overflow bits requires reading the entire index. So don't do that. The new code validates that the page is not a primary bucket page or bitmap page by looking at the metapage, so that using this on large numbers of pages can be reasonably efficient. Ashutosh Sharma, per a complaint from me, and with further modifications by me. |
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