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Ensure that before truncating CLOG, we force a checkpoint even if no

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recent WAL activity has occurred.  Without this, it's possible that a
later crash might leave tuples on disk with un-updated commit status
bits.
This commit is contained in:
Tom Lane
2002-09-26 22:58:34 +00:00
parent c87469e64a
commit b2ab1e6bc9
5 changed files with 26 additions and 25 deletions
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6
src/backend/access/transam/clog.c
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@ -13,7 +13,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Header: /cvsroot/pgsql/src/backend/access/transam/clog.c,v 1.10 2002/09/02 02:47:01 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/access/transam/clog.c,v 1.11 2002/09/26 22:58:33 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -809,8 +809,8 @@ TruncateCLOG(TransactionId oldestXact)
if (!ScanCLOGDirectory(cutoffPage, false))
return; /* nothing to remove */
/* Perform a CHECKPOINT */
CreateCheckPoint(false);
/* Perform a forced CHECKPOINT */
CreateCheckPoint(false, true);
/*
* Scan CLOG shared memory and remove any pages preceding the cutoff