Re: [HACKERS] btree shrinking again

2002-11-18 Thread Curtis Faith
> Alvaro Herrera <[EMAIL PROTECTED]> writes: > > + Deletions are handled by getting a super-exclusive lock on the target > >page, so that no other backend has a pin on the page when the deletion > >starts. This means no scan is pointing at the page. This is OK for > >deleting leaf it

Re: [HACKERS] btree shrinking again

2002-11-17 Thread Tom Lane
Alvaro Herrera <[EMAIL PROTECTED]> writes: > + Deletions are handled by getting a super-exclusive lock on the target >page, so that no other backend has a pin on the page when the deletion >starts. This means no scan is pointing at the page. This is OK for >deleting leaf items, proba