| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | "Kevin Grittner" <Kevin(dot)Grittner(at)wicourts(dot)gov> |
| Cc: | "Heikki Linnakangas" <heikki(dot)linnakangas(at)enterprisedb(dot)com>, "Dan Ports" <drkp(at)csail(dot)mit(dot)edu>, "Robert Haas" <robertmhaas(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: reindex creates predicate lock on index root |
| Date: | 2011-06-08 15:40:51 |
| Message-ID: | 10465.1307547651@sss.pgh.pa.us |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
"Kevin Grittner" <Kevin(dot)Grittner(at)wicourts(dot)gov> writes:
> Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com> wrote:
>> You can have one snapshot pushed to the active snapshot stack, and
>> do a DDL operation like reindex using a different snapshot. You'll
>> have to check the snapshot in the HeapScanDesc.
> Will look at that. Do you think it makes more sense to pass in the
> snapshot on all these calls and test it within predicate.c, or
> condition the calls on this?
I'd vote for passing in the snapshot. I can foresee wanting to know
exactly which snapshot is in question in this code, anyway.
regards, tom lane
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Merlin Moncure | 2011-06-08 15:46:38 | Re: Error in PQsetvalue |
| Previous Message | Jim Nasby | 2011-06-08 15:39:06 | Re: reducing the overhead of frequent table locks - now, with WIP patch |