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Make RecordTransactionCommit() respect wal_level.

author Robert Haas <rhaas@postgresql.org>

2010年8月13日 15:42:21 +0000 (15:42 +0000)

committer Robert Haas <rhaas@postgresql.org>

2010年8月13日 15:42:21 +0000 (15:42 +0000)

Since the only purpose of WAL-loggin SharedInvalidationMessages is to support
Hot Standby operation, they needn't be included when wal_level < hot_standby.

Back-patch to 9.0.

Review by Heikki Linnakanagas and Fujii Masao.

src/backend/access/transam/xact.c patch | blob | blame | history

diff --git a/src/backend/access/transam/xact.c b/src/backend/access/transam/xact.c

index 37764891d7f26837c5e24754dcbcf699f379ef07..0491d2c8d91b836442af3ee1fa23faa1f04b3294 100644 (file)

--- a/src/backend/access/transam/xact.c

+++ b/src/backend/access/transam/xact.c

@@ -10,7 +10,7 @@

* IDENTIFICATION

- * $PostgreSQL: pgsql/src/backend/access/transam/xact.c,v 1.296 2010年08月12日 23:24:53 rhaas Exp $

+ * $PostgreSQL: pgsql/src/backend/access/transam/xact.c,v 1.297 2010年08月13日 15:42:21 rhaas Exp $

*-------------------------------------------------------------------------

@@ -915,15 +915,16 @@ RecordTransactionCommit(void)

bool haveNonTemp;

int nchildren;

TransactionId *children;

- int nmsgs;

+ int nmsgs = 0;

SharedInvalidationMessage *invalMessages = NULL;

- bool RelcacheInitFileInval;

+ bool RelcacheInitFileInval = false;

/* Get data needed for commit record */

nrels = smgrGetPendingDeletes(true, &rels, &haveNonTemp);

nchildren = xactGetCommittedChildren(&children);

- nmsgs = xactGetCommittedInvalidationMessages(&invalMessages,

- &RelcacheInitFileInval);

+ if (XLogStandbyInfoActive())

+ nmsgs = xactGetCommittedInvalidationMessages(&invalMessages,

+ &RelcacheInitFileInval);

* If we haven't been assigned an XID yet, we neither can, nor do we want

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