Hi, On 2022-06-22 21:06:29 +0000, Bagga, Rishu wrote: > 3. A flag to identify if the page is a relational or BufferedObject
Why is this needed in the page header? > Using the new BufferedObject page header will be space efficient but > introduces a significant change in the codebase to now track two types > of page header data. During upgrade, all SLRU files that exist on the > system must be converted to the new format with page header. This will > require rewriting all the SLRU pages with the page header as part of > pg_upgrade. How are you proposing to deal with this in the "key" to "offset in SLRU" mapping? E.g. converting a xid to an offset in the pg_xact SLRU. I assume you're thinking to deal with this by making the conversion math a bit more complicated? Greetings, Andres Freund
