On Fri, Oct 13, 2017 at 9:37 PM, Robert Haas <robertmh...@gmail.com> wrote:
> On Fri, Oct 13, 2017 at 5:25 AM, Kuntal Ghosh > <kuntalghosh.2...@gmail.com> wrote: > > For some other > > storage engine, if we maintain the older version in different storage, > > undo for example, and don't require a new index entry, should we still > > call it HOT-chain? > > I would say, emphatically, no. HOT is a creature of the existing > heap. If it's creeping into storage APIs they are not really > abstracted from what we have currently. +1, different storage may need to insert entries to only *some* of indexes. Wherein these new index entries may have either same or new TIDs. ------ Alexander Korotkov Postgres Professional: http://www.postgrespro.com The Russian Postgres Company