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Re: [HACKERS] [PROPOSAL] Use SnapshotAny in get_actual_variable_range - Mailing list pgsql-hackers

From Dmitriy Sarafannikov
Subject Re: [HACKERS] [PROPOSAL] Use SnapshotAny in get_actual_variable_range
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Msg-id CF5A7801-ED43-418E-BC3B-A415CF113EC0@yandex.ru
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In response to Re: [HACKERS] [PROPOSAL] Use SnapshotAny in get_actual_variable_range  (Amit Kapila <amit.kapila16@gmail.com>)
Responses Re: [HACKERS] [PROPOSAL] Use SnapshotAny in get_actual_variable_range  (Amit Kapila <amit.kapila16@gmail.com>)
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I think we can use RecentGlobalDataXmin for non-catalog relations and
RecentGlobalXmin for catalog relations (probably a check similar to
what we have in heap_page_prune_opt).

I took check from heap_page_prune_opt (Maybe this check must be present as separate function?)
But it requires to initialize snapshot for specific relation. Maybe we need to use GetOldestXmin()?
New version of patch is attached.

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