Jim Nasby <jim.na...@bluetreble.com> writes:
> On 10/21/16 7:43 PM, Tom Lane wrote:
>> Alvaro Herrera <alvhe...@2ndquadrant.com> writes:
>>> Agreed. The problem is how to install it without breaking pg_upgrade.
> It can't look up relation names?
It can't shove 64 bytes into a page that has < 64 bytes free space.
>> Well, that's the first problem. The second problem is how to cope with
>> RENAME TABLE.
> If the name was only encoded in the first block of the relation I'm not
> sure how bad this would be; are there any facilities to change the name
> back on a rollback?
No. How would that work in crash situations? (And keep in mind that the
argument for this hinges entirely on its being 100% trustworthy after a
crash.)
regards, tom lane
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