Christopher Kings-Lynne <chriskl@familyhealth.com.au> writes:
> Just random speculation, but could we use a pg_subtrans-like setup to do
> row share locks?
pg_subtrans is trivial to index --- it's a linear array subscripted by
TransactionId. I'm not sure what we'd do to handle row locks, which
would need a key like (DBoid, RELoid, BlockNum, LineNum) and would be
extremely non-dense in that space.
'Tis something to think about though...
regards, tom lane