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Finish disabling reduced-lock-levels-for-DDL feature.

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Previous patch only covered the ALTER TABLE changes, not changes in other
commands; and it neglected to revert the documentation changes.
This commit is contained in:
Tom Lane
2011-07-07 13:14:46 -04:00
parent 928408d9e5
commit a195e3c34f
4 changed files with 24 additions and 32 deletions
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12
src/backend/rewrite/rewriteDefine.c
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@ -238,14 +238,12 @@ DefineQueryRewrite(char *rulename,
/*
* If we are installing an ON SELECT rule, we had better grab
* AccessExclusiveLock to ensure no SELECTs are currently running on the
* event relation. For other types of rules, it is sufficient to grab
* ShareRowExclusiveLock to lock out insert/update/delete actions and to
* ensure that we lock out current CREATE RULE statements.
* event relation. For other types of rules, it would be sufficient to
* grab ShareRowExclusiveLock to lock out insert/update/delete actions and
* to ensure that we lock out current CREATE RULE statements; but because
* of race conditions in access to catalog entries, we can't do that yet.
*/
if (event_type == CMD_SELECT)
event_relation = heap_open(event_relid, AccessExclusiveLock);
else
event_relation = heap_open(event_relid, ShareRowExclusiveLock);
event_relation = heap_open(event_relid, AccessExclusiveLock);
/*
* Verify relation is of a type that rules can sensibly be applied to.