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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2005-08-20 00:40:32 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2005-08-20 00:40:32 +0000 |
| commit | f57e3f4cf36f3fdd89cae8d566479ad747809b2f (patch) | |
| tree | 6cb7a1b32271692929ecef6be67a823c9d29cf3f /src/include/executor/executor.h | |
| parent | 97bb6e89beed326aae1990d798107b4af9a9af02 (diff) | |
| download | postgresql-f57e3f4cf36f3fdd89cae8d566479ad747809b2f.tar.gz | |
Repair problems with VACUUM destroying t_ctid chains too soon, and with
insufficient paranoia in code that follows t_ctid links. (We must do both
because even with VACUUM doing it properly, the intermediate state with
a dangling t_ctid link is visible concurrently during lazy VACUUM, and
could be seen afterwards if either type of VACUUM crashes partway through.)
Also try to improve documentation about what's going on. Patch is a bit
bulky because passing the XMAX information around required changing the
APIs of some low-level heapam.c routines, but it's not conceptually very
complicated. Per trouble report from Teodor and subsequent analysis.
This needs to be back-patched, but I'll do that after 8.1 beta is out.
Diffstat (limited to 'src/include/executor/executor.h')
| -rw-r--r-- | src/include/executor/executor.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/include/executor/executor.h b/src/include/executor/executor.h index 2e42894788..6064ff2f4f 100644 --- a/src/include/executor/executor.h +++ b/src/include/executor/executor.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/executor/executor.h,v 1.118 2005/04/16 20:07:35 tgl Exp $ + * $PostgreSQL: pgsql/src/include/executor/executor.h,v 1.119 2005/08/20 00:40:13 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -98,7 +98,7 @@ extern bool ExecContextForcesOids(PlanState *planstate, bool *hasoids); extern void ExecConstraints(ResultRelInfo *resultRelInfo, TupleTableSlot *slot, EState *estate); extern TupleTableSlot *EvalPlanQual(EState *estate, Index rti, - ItemPointer tid); + ItemPointer tid, TransactionId priorXmax); /* * prototypes from functions in execProcnode.c |