Movatterモバイル変換

[0]ホーム
URL:

Skip to content

Navigation Menu

Sign in
Appearance settings

Search code, repositories, users, issues, pull requests...

Provide feedback

We read every piece of feedback, and take your input very seriously.

Saved searches

Use saved searches to filter your results more quickly

 Sign up
Appearance settings

Commit23645f0

Browse files
committed
Fix incorrect ordering of smgr cleanup relative to buffer pin cleanup
during transaction abort. Add a regression test case to catch relatedmistakes in future. Alvaro Herrera and Tom Lane.
1 parenteb917c1 commit23645f0

File tree

4 files changed

+44
-12
lines changed

4 files changed

+44
-12
lines changed

‎src/backend/access/transam/xact.c‎

Lines changed: 14 additions & 10 deletions
Original file line numberDiff line numberDiff line change
@@ -10,7 +10,7 @@
1010
*
1111
*
1212
* IDENTIFICATION
13-
* $PostgreSQL: pgsql/src/backend/access/transam/xact.c,v 1.185 2004/08/30 19:00:03 tgl Exp $
13+
* $PostgreSQL: pgsql/src/backend/access/transam/xact.c,v 1.186 2004/09/06 17:56:04 tgl Exp $
1414
*
1515
*-------------------------------------------------------------------------
1616
*/
@@ -1333,9 +1333,6 @@ CommitTransaction(void)
13331333
* backend-wide state.
13341334
*/
13351335

1336-
smgrDoPendingDeletes(true);
1337-
/* smgrcommit already done */
1338-
13391336
CallXactCallbacks(XACT_EVENT_COMMIT,InvalidTransactionId);
13401337

13411338
ResourceOwnerRelease(TopTransactionResourceOwner,
@@ -1352,6 +1349,14 @@ CommitTransaction(void)
13521349
*/
13531350
AtEOXact_Inval(true);
13541351

1352+
/*
1353+
* Likewise, dropping of files deleted during the transaction is best done
1354+
* after releasing relcache and buffer pins. (This is not strictly
1355+
* necessary during commit, since such pins should have been released
1356+
* already, but this ordering is definitely critical during abort.)
1357+
*/
1358+
smgrDoPendingDeletes(true);
1359+
13551360
ResourceOwnerRelease(TopTransactionResourceOwner,
13561361
RESOURCE_RELEASE_LOCKS,
13571362
true, true);
@@ -1363,6 +1368,7 @@ CommitTransaction(void)
13631368
AtEOXact_SPI(true);
13641369
AtEOXact_on_commit_actions(true,s->transactionIdData);
13651370
AtEOXact_Namespace(true);
1371+
/* smgrcommit already done */
13661372
AtEOXact_Files();
13671373
pgstat_count_xact_commit();
13681374

@@ -1481,15 +1487,13 @@ AbortTransaction(void)
14811487
* ordering.
14821488
*/
14831489

1484-
smgrDoPendingDeletes(false);
1485-
smgrabort();
1486-
14871490
CallXactCallbacks(XACT_EVENT_ABORT,InvalidTransactionId);
14881491

14891492
ResourceOwnerRelease(TopTransactionResourceOwner,
14901493
RESOURCE_RELEASE_BEFORE_LOCKS,
14911494
false, true);
14921495
AtEOXact_Inval(false);
1496+
smgrDoPendingDeletes(false);
14931497
ResourceOwnerRelease(TopTransactionResourceOwner,
14941498
RESOURCE_RELEASE_LOCKS,
14951499
false, true);
@@ -1501,6 +1505,7 @@ AbortTransaction(void)
15011505
AtEOXact_SPI(false);
15021506
AtEOXact_on_commit_actions(false,s->transactionIdData);
15031507
AtEOXact_Namespace(false);
1508+
smgrabort();
15041509
AtEOXact_Files();
15051510
pgstat_count_xact_rollback();
15061511

@@ -3014,7 +3019,6 @@ CommitSubTransaction(void)
30143019
AtSubCommit_Notify();
30153020
AtEOSubXact_UpdatePasswordFile(true,s->transactionIdData,
30163021
s->parent->transactionIdData);
3017-
AtSubCommit_smgr();
30183022

30193023
CallXactCallbacks(XACT_EVENT_COMMIT_SUB,s->parent->transactionIdData);
30203024

@@ -3024,6 +3028,7 @@ CommitSubTransaction(void)
30243028
AtEOSubXact_RelationCache(true,s->transactionIdData,
30253029
s->parent->transactionIdData);
30263030
AtEOSubXact_Inval(true);
3031+
AtSubCommit_smgr();
30273032
ResourceOwnerRelease(s->curTransactionOwner,
30283033
RESOURCE_RELEASE_LOCKS,
30293034
true, false);
@@ -3109,8 +3114,6 @@ AbortSubTransaction(void)
31093114
RecordSubTransactionAbort();
31103115

31113116
/* Post-abort cleanup */
3112-
AtSubAbort_smgr();
3113-
31143117
CallXactCallbacks(XACT_EVENT_ABORT_SUB,s->parent->transactionIdData);
31153118

31163119
ResourceOwnerRelease(s->curTransactionOwner,
@@ -3119,6 +3122,7 @@ AbortSubTransaction(void)
31193122
AtEOSubXact_RelationCache(false,s->transactionIdData,
31203123
s->parent->transactionIdData);
31213124
AtEOSubXact_Inval(false);
3125+
AtSubAbort_smgr();
31223126
ResourceOwnerRelease(s->curTransactionOwner,
31233127
RESOURCE_RELEASE_LOCKS,
31243128
false, false);

‎src/backend/storage/smgr/smgr.c‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -11,7 +11,7 @@
1111
*
1212
*
1313
* IDENTIFICATION
14-
* $PostgreSQL: pgsql/src/backend/storage/smgr/smgr.c,v 1.81 2004/08/30 02:54:39 momjian Exp $
14+
* $PostgreSQL: pgsql/src/backend/storage/smgr/smgr.c,v 1.82 2004/09/06 17:56:16 tgl Exp $
1515
*
1616
*-------------------------------------------------------------------------
1717
*/
@@ -784,7 +784,7 @@ smgrcommit(void)
784784
}
785785

786786
/*
787-
*smgrabort() --Abort changes made during the currenttransaction.
787+
*smgrabort() --Clean up aftertransaction abort.
788788
*/
789789
void
790790
smgrabort(void)

‎src/test/regress/expected/transactions.out‎

Lines changed: 15 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -374,6 +374,21 @@ ERROR: portal "c" cannot be run
374374
FETCH 10 FROM c;
375375
ERROR: portal "c" cannot be run
376376
COMMIT;
377+
-- test case for problems with dropping an open relation during abort
378+
BEGIN;
379+
savepoint x;
380+
CREATE TABLE koju (a INT UNIQUE);
381+
NOTICE: CREATE TABLE / UNIQUE will create implicit index "koju_a_key" for table "koju"
382+
INSERT INTO koju VALUES (1);
383+
INSERT INTO koju VALUES (1);
384+
ERROR: duplicate key violates unique constraint "koju_a_key"
385+
rollback to x;
386+
CREATE TABLE koju (a INT UNIQUE);
387+
NOTICE: CREATE TABLE / UNIQUE will create implicit index "koju_a_key" for table "koju"
388+
INSERT INTO koju VALUES (1);
389+
INSERT INTO koju VALUES (1);
390+
ERROR: duplicate key violates unique constraint "koju_a_key"
391+
ROLLBACK;
377392
DROP TABLE foo;
378393
DROP TABLE baz;
379394
DROP TABLE barbaz;

‎src/test/regress/sql/transactions.sql‎

Lines changed: 13 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -231,6 +231,19 @@ BEGIN;
231231
FETCH10FROM c;
232232
COMMIT;
233233

234+
-- test case for problems with dropping an open relation during abort
235+
BEGIN;
236+
savepoint x;
237+
CREATETABLEkoju (aINT UNIQUE);
238+
INSERT INTO kojuVALUES (1);
239+
INSERT INTO kojuVALUES (1);
240+
rollback to x;
241+
242+
CREATETABLEkoju (aINT UNIQUE);
243+
INSERT INTO kojuVALUES (1);
244+
INSERT INTO kojuVALUES (1);
245+
ROLLBACK;
246+
234247
DROPTABLE foo;
235248
DROPTABLE baz;
236249
DROPTABLE barbaz;

0 commit comments

Comments
 (0)
[8]ページ先頭
©2009-2025 Movatter.jp