On Wed, Mar 12, 2008 at 10:44 PM, Heikki Linnakangas
<[EMAIL PROTECTED]> wrote:
> Imagine that you start a transaction just before transaction
> wrap-around, so that the top level XID is 2^31-10. Then you start 20
> subtransactions. What XIDs will they get? Now how would you map those to
> a bitmap?
Wait. Subtransaction ids are local to a transaction and always start from 1.
* reinitialize within-transaction counters
s->subTransactionId = TopSubTransactionId;
currentSubTransactionId = TopSubTransactionId;
> It's not that common to have hundreds of thousands of subtransactions to
> begin with..
True. But thats the case we are trying to solve here :-)
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