| From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
|---|---|
| To: | Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com> |
| Cc: | pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Latest version of Hot Standby patch |
| Date: | 2009-01-13 17:31:55 |
| Message-ID: | 1231867915.28919.14.camel@ebony.2ndQuadrant |
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| Lists: | pgsql-hackers |
On Wed, 2009-01-07 at 15:43 +0200, Heikki Linnakangas wrote:
> Normally, GetRunningTransactionData determines the xid of the latest
> running xid by scanning the procarray. If the subxid cache has
> overflowed, it simply gives up. Comment there suggests that it could
> call ReadNewTransactionId() instead, like it does when there's no
> active xids in proc array. I think we should do that, or something
> else to alleviate the problem.
>
> When there's no xids in the procarray, couldn't we just use
> latestCompletedXid instead of calling ReadNewTransactionId()?
Done.
--
Simon Riggs www.2ndQuadrant.com
PostgreSQL Training, Services and Support
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