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.

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

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