NotificationsYou must be signed in to change notification settings
Fork6
Star31

Commit2c66dcf

committed

In the new dispensation where REINDEX doesn't take exclusive lock on

the parent table, it's essential that all index accesses take some kindof lock on the index. I had missed vacuumlazy.c :-( ...

1 parent1d6b096 commit2c66dcfCopy full SHA for 2c66dcf

File tree

1 file changed

+17

-7

lines changed

src/backend/commands
- vacuumlazy.c

1 file changed

+17

-7

lines changed

`‎src/backend/commands/vacuumlazy.c‎`

Lines changed: 17 additions & 7 deletions

Original file line number	Diff line number	Diff line change
`@@ -31,7 +31,7 @@`
`31`	`31`	`*`
`32`	`32`	`*`
`33`	`33`	`* IDENTIFICATION`
`34`		`- * $PostgreSQL: pgsql/src/backend/commands/vacuumlazy.c,v 1.47 2004/10/15 22:39:56 tgl Exp $`
	`34`	`+ * $PostgreSQL: pgsql/src/backend/commands/vacuumlazy.c,v 1.48 2004/10/25 15:42:02 tgl Exp $`
`35`	`35`	`*`
`36`	`36`	`*-------------------------------------------------------------------------`
`37`	`37`	`*/`
`@@ -554,9 +554,12 @@ lazy_scan_index(Relation indrel, LVRelStats *vacrelstats)`
`554`	`554`	`vac_init_rusage(&ru0);`
`555`	`555`
`556`	`556`	`/*`
`557`		`- * If index is unsafe for concurrent access, must lock it.`
	`557`	`+ * Acquire appropriate type of lock on index: must be exclusive if`
	`558`	`+ * index AM isn't concurrent-safe.`
`558`	`559`	`*/`
`559`		`-if (!indrel->rd_am->amconcurrent)`
	`560`	`+if (indrel->rd_am->amconcurrent)`
	`561`	`+LockRelation(indrel,RowExclusiveLock);`
	`562`	`+else`
`560`	`563`	`LockRelation(indrel,AccessExclusiveLock);`
`561`	`564`
`562`	`565`	`/*`
`@@ -576,7 +579,9 @@ lazy_scan_index(Relation indrel, LVRelStats *vacrelstats)`
`576`	`579`	`/*`
`577`	`580`	`* Release lock acquired above.`
`578`	`581`	`*/`
`579`		`-if (!indrel->rd_am->amconcurrent)`
	`582`	`+if (indrel->rd_am->amconcurrent)`
	`583`	`+UnlockRelation(indrel,RowExclusiveLock);`
	`584`	`+else`
`580`	`585`	`UnlockRelation(indrel,AccessExclusiveLock);`
`581`	`586`
`582`	`587`	`if (!stats)`
`@@ -619,9 +624,12 @@ lazy_vacuum_index(Relation indrel, LVRelStats *vacrelstats)`
`619`	`624`	`vac_init_rusage(&ru0);`
`620`	`625`
`621`	`626`	`/*`
`622`		`- * If index is unsafe for concurrent access, must lock it.`
	`627`	`+ * Acquire appropriate type of lock on index: must be exclusive if`
	`628`	`+ * index AM isn't concurrent-safe.`
`623`	`629`	`*/`
`624`		`-if (!indrel->rd_am->amconcurrent)`
	`630`	`+if (indrel->rd_am->amconcurrent)`
	`631`	`+LockRelation(indrel,RowExclusiveLock);`
	`632`	`+else`
`625`	`633`	`LockRelation(indrel,AccessExclusiveLock);`
`626`	`634`
`627`	`635`	`/* Do bulk deletion */`
`@@ -636,7 +644,9 @@ lazy_vacuum_index(Relation indrel, LVRelStats *vacrelstats)`
`636`	`644`	`/*`
`637`	`645`	`* Release lock acquired above.`
`638`	`646`	`*/`
`639`		`-if (!indrel->rd_am->amconcurrent)`
	`647`	`+if (indrel->rd_am->amconcurrent)`
	`648`	`+UnlockRelation(indrel,RowExclusiveLock);`
	`649`	`+else`
`640`	`650`	`UnlockRelation(indrel,AccessExclusiveLock);`
`641`	`651`
`642`	`652`	`if (!stats)`

0 commit comments

Comments

(0)

Movatterモバイル変換

Navigation Menu

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

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!

Commit2c66dcf

File tree

1 file changed

1 file changed

`‎src/backend/commands/vacuumlazy.c‎`

0 commit comments