diff options
| author | Tom Lane | 2008-11-13 17:42:10 +0000 |
|---|---|---|
| committer | Tom Lane | 2008-11-13 17:42:10 +0000 |
| commit | 10e3acb8e7bd3298ba2b942f86c18f5ba2e142a8 (patch) | |
| tree | 19bf64481b48aa0f21669a994958fb7c4be2645f /src/include | |
| parent | 3379fae6de5994b242cedfa48cf613ecfee3db24 (diff) | |
Prevent synchronous scan during GIN index build, because GIN is optimized
for inserting tuples in increasing TID order. It's not clear whether this
fully explains Ivan Sergio Borgonovo's complaint, but simple testing
confirms that a scan that doesn't start at block 0 can slow GIN build by
a factor of three or four.
Backpatch to 8.3. Sync scan didn't exist before that.
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/catalog/index.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h index a5ab195c233..939c47cd916 100644 --- a/src/include/catalog/index.h +++ b/src/include/catalog/index.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/catalog/index.h,v 1.75 2008/01/01 19:45:56 momjian Exp $ + * $PostgreSQL: pgsql/src/include/catalog/index.h,v 1.76 2008/11/13 17:42:10 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -63,6 +63,7 @@ extern void index_build(Relation heapRelation, extern double IndexBuildHeapScan(Relation heapRelation, Relation indexRelation, IndexInfo *indexInfo, + bool allow_sync, IndexBuildCallback callback, void *callback_state); |