Hmm, should ACL[] be toastable?

Tom Lane wrote:

I notice that ACL lists are represented as arrays of aclitem, which
means they are now theoretically toastable. (In practice, I haven't
finished fixing all the routines that touch ACLs, but will soon.)

Do we need long lists of ACLs? If so, is there any danger in giving
pg_class a toast relation? It's a tad closer to the heart of the
system than pg_rewrite, so I'm not quite sure if that will work or
not. Jan?

In theory it should work, in practice, I don't know.

Since pg_class is really close to the heart of the system, it
is created a little different during bootstrap. This causes,
that setting relacl to storage 'x' doesn't automatically
create a toast relation for it during bootstrap. And
therefore, the toaster should only try to compress, never
move out (to where?).

Someone could later create such a toast table with ALTER
TABLE ... if he wants to give it a try. And we could warn
him not to do so before we really stress tested it.

Is that a compromise?

Jan

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