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Reject currtid2() on unlogged tables during recovery.

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Commit 1e707d3256 made COPY TO report a proper error for unlogged
tables during recovery. currtid2() has the same problem: it reads the
table directly without going through the planner, so on a standby it
failed with a low-level error for an unlogged table:

ERROR:  could not open file "base/5/16384": No such file or directory

Check for this case and report the same error as SELECT. No test is
added, as currtid2() is an undocumented internal function.

Backpatch to all supported versions, like commit 1e707d3256.

Reported-by: Masahiko Sawada <sawada.mshk@gmail.com>
Author: Jim Jones <jim.jones@uni-muenster.de>
Discussion: https://postgr.es/m/CAD21AoDNa7pL760_23AN_wYPMkWXCt+Kw0_vJAcci4R5DoCQGg@mail.gmail.com
Backpatch-through: 14
This commit is contained in:
Masahiko Sawada
2026-10-21 11:10:41 -07:00
parent 794c29dc41
commit a5b925cfcc
1 changed files with 7 additions and 0 deletions
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7
src/backend/utils/adt/tid.c
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@@ -23,6 +23,7 @@
#include "access/sysattr.h"
#include "access/table.h"
#include "access/tableam.h"
#include "access/xlog.h"
#include "catalog/namespace.h"
#include "catalog/pg_type.h"
#include "common/hashfn.h"
@@ -318,6 +319,12 @@ currtid_internal(Relation rel, ItemPointer tid)
get_namespace_name(RelationGetNamespace(rel)),
RelationGetRelationName(rel)));
/* Temporary and unlogged relations are inaccessible during recovery. */
if (!RelationIsPermanent(rel) && RecoveryInProgress())
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("cannot access temporary or unlogged relations during recovery")));
ItemPointerCopy(tid, result);
snapshot = RegisterSnapshot(GetLatestSnapshot());