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Support unlogged tables.

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The contents of an unlogged table are WAL-logged; thus, they are not
available on standby servers and are truncated whenever the database
system enters recovery.  Indexes on unlogged tables are also unlogged.
Unlogged GiST indexes are not currently supported.
This commit is contained in:
Robert Haas
2010-12-29 06:48:53 -05:00
parent 9b8aff8c19
commit 53dbc27c62
49 changed files with 916 additions and 104 deletions
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11
src/backend/catalog/index.c
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@@ -1437,6 +1437,17 @@ index_build(Relation heapRelation,
PointerGetDatum(indexInfo)));
Assert(PointerIsValid(stats));
/*
* If this is an unlogged index, we need to write out an init fork for it.
*/
if (heapRelation->rd_rel->relpersistence == RELPERSISTENCE_UNLOGGED)
{
RegProcedure ambuildempty = indexRelation->rd_am->ambuildempty;
RelationOpenSmgr(indexRelation);
smgrcreate(indexRelation->rd_smgr, INIT_FORKNUM, false);
OidFunctionCall1(ambuildempty, PointerGetDatum(indexRelation));
}
/*
* If it's for an exclusion constraint, make a second pass over the heap
* to verify that the constraint is satisfied.