Re: [PATCHES] [HACKERS] HOT WIP Patch - version 2

2007-02-20 Thread Pavan Deolasee
On 2/20/07, Bruce Momjian <[EMAIL PROTECTED]> wrote: Tom Lane wrote: > > "Recently dead" means "still live to somebody", so those tids better not > change either. But I don't think that's what he meant. I'm more > worried about the deadlock possibilities inherent in trying to upgrade a > buffe

Re: [PATCHES] [HACKERS] HOT WIP Patch - version 2

2007-02-20 Thread Bruce Momjian
Tom Lane wrote: > Bruce Momjian <[EMAIL PROTECTED]> writes: > > Pavan Deolasee wrote: > >> When following a HOT-update chain from the index fetch, if we notice that > >> the root tuple is dead and it is HOT-updated, we try to prune the chain to > >> the smallest possible length. To do that, the sha

Re: [PATCHES] [HACKERS] HOT WIP Patch - version 2

2007-02-20 Thread Tom Lane
Bruce Momjian <[EMAIL PROTECTED]> writes: > Pavan Deolasee wrote: >> When following a HOT-update chain from the index fetch, if we notice that >> the root tuple is dead and it is HOT-updated, we try to prune the chain to >> the smallest possible length. To do that, the share lock is upgraded to an