| From: | Greg Stark <stark(at)mit(dot)edu> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Noah Misch <noah(at)leadboat(dot)com>, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Temporary tables versus wraparound... again |
| Date: | 2022-03-28 20:11:55 |
| Message-ID: | CAM-w4HM_BP-bpqX3HH_rdQcvN4auRbOWBPuKPVeOjqTWbuo2Ug@mail.gmail.com |
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| Lists: | pgsql-hackers |
I had to rebase this again after Tom's cleanup of heap.c removing some includes.
I had to re-add snapmgr to access RecentXmin. I occurs to me to ask
whether RecentXmin is actually guaranteed to be set. I haven't
checked. I thought it was set when the first snapshot was taken and
presumably even if it's a non-transactional truncate we're still in a
transaction?
The patch also added heapam.h to heap.c which might seem like a layer
violation. I think it's ok since it's just to be able to update the
catalog (heap_inplace_update is in heapam.h).
| Attachment | Content-Type | Size |
|---|---|---|
| v4-0002-Add-test-for-truncating-temp-tables-advancing-rel.patch | text/x-patch | 4.2 KB |
| v4-0001-Update-relfrozenxmin-when-truncating-temp-tables.patch | text/x-patch | 12.5 KB |
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