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Prevent WAL logging when COPY is done in the same transation that

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created it.

Simon Riggs
This commit is contained in:
Bruce Momjian
2007-01-25 02:17:26 +00:00
parent 693c85d954
commit ef65f6f7a4
10 changed files with 182 additions and 31 deletions
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23
src/backend/utils/cache/relcache.c vendored
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/cache/relcache.c,v 1.254 2007/01/09 02:14:15 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/cache/relcache.c,v 1.255 2007/01/25 02:17:26 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -836,6 +836,7 @@ RelationBuildDesc(Oid targetRelId, Relation oldrelation)
relation->rd_refcnt = 0;
relation->rd_isnailed = false;
relation->rd_createSubid = InvalidSubTransactionId;
relation->rd_newRelfilenodeSubid = InvalidSubTransactionId;
relation->rd_istemp = isTempNamespace(relation->rd_rel->relnamespace);
/*
@ -1358,6 +1359,7 @@ formrdesc(const char *relationName, Oid relationReltype,
*/
relation->rd_isnailed = true;
relation->rd_createSubid = InvalidSubTransactionId;
relation->rd_newRelfilenodeSubid = InvalidSubTransactionId;
relation->rd_istemp = false;
/*
@ -1769,6 +1771,7 @@ RelationClearRelation(Relation relation, bool rebuild)
Oid save_relid = RelationGetRelid(relation);
int old_refcnt = relation->rd_refcnt;
SubTransactionId old_createSubid = relation->rd_createSubid;
SubTransactionId old_newRelfilenodeSubid = relation->rd_newRelfilenodeSubid;
TupleDesc old_att = relation->rd_att;
RuleLock *old_rules = relation->rd_rules;
MemoryContext old_rulescxt = relation->rd_rulescxt;
@ -1787,6 +1790,8 @@ RelationClearRelation(Relation relation, bool rebuild)
}
relation->rd_refcnt = old_refcnt;
relation->rd_createSubid = old_createSubid;
relation->rd_newRelfilenodeSubid = old_newRelfilenodeSubid;
if (equalTupleDescs(old_att, relation->rd_att))
{
/* needn't flush typcache here */
@ -1827,7 +1832,8 @@ RelationFlushRelation(Relation relation)
{
bool rebuild;
if (relation->rd_createSubid != InvalidSubTransactionId)
if (relation->rd_createSubid != InvalidSubTransactionId ||
relation->rd_newRelfilenodeSubid != InvalidSubTransactionId)
{
/*
* New relcache entries are always rebuilt, not flushed; else we'd
@ -1909,6 +1915,9 @@ RelationCacheInvalidateEntry(Oid relationId)
* so we do not touch new-in-transaction relations; they cannot be targets
* of cross-backend SI updates (and our own updates now go through a
* separate linked list that isn't limited by the SI message buffer size).
* We don't do anything special for newRelfilenode-in-transaction relations,
* though since we have a lock on the relation nobody else should be
* generating cache invalidation messages for it anyhow.
*
* We do this in two phases: the first pass deletes deletable items, and
* the second one rebuilds the rebuildable items. This is essential for
@ -2085,6 +2094,7 @@ AtEOXact_RelationCache(bool isCommit)
continue;
}
}
relation->rd_newRelfilenodeSubid = InvalidSubTransactionId;
/*
* Flush any temporary index list.
@ -2146,6 +2156,13 @@ AtEOSubXact_RelationCache(bool isCommit, SubTransactionId mySubid,
continue;
}
}
if (relation->rd_newRelfilenodeSubid == mySubid)
{
if (isCommit)
relation->rd_newRelfilenodeSubid = parentSubid;
else
relation->rd_newRelfilenodeSubid = InvalidSubTransactionId;
}
/*
* Flush any temporary index list.
@ -2235,6 +2252,7 @@ RelationBuildLocalRelation(const char *relname,
/* it's being created in this transaction */
rel->rd_createSubid = GetCurrentSubTransactionId();
rel->rd_newRelfilenodeSubid = InvalidSubTransactionId;
/* must flag that we have rels created in this transaction */
need_eoxact_work = true;
@ -3392,6 +3410,7 @@ load_relcache_init_file(void)
rel->rd_indexlist = NIL;
rel->rd_oidindex = InvalidOid;
rel->rd_createSubid = InvalidSubTransactionId;
rel->rd_newRelfilenodeSubid = InvalidSubTransactionId;
rel->rd_amcache = NULL;
MemSet(&rel->pgstat_info, 0, sizeof(rel->pgstat_info));