Pavan Deolasee wrote:
Heikki Linnakangas wrote:
> Pavan Deolasee wrote:
> We would only need the extra byte in HOT-updated tuples.
Alternatively, we could use the bits we have free in infomask2. There's
currently 5 bits free, using just 2 or 3 of those would get us quite
far. Or just one, which would be the Tom's suggestion of only using HOT
for tables with a single index.
>
We've already used three of those, two for tracking HEAP_ONLY
and HOT_UPDATED tuples and one for tracking fragmented tuple.
HEAP_ONLY_TUPLE would go away in favor of the per-index bits. So we have
bits available for three indexes.
--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com
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