From f35742ccb7aa53ee3ed8416bbb378b0c3eeb6bb9 Mon Sep 17 00:00:00 2001 From: Robert Haas Date: Wed, 8 Mar 2017 12:05:43 -0500 Subject: Support parallel bitmap heap scans. The index is scanned by a single process, but then all cooperating processes can iterate jointly over the resulting set of heap blocks. In the future, we might also want to support using a parallel bitmap index scan to set up for a parallel bitmap heap scan, but that's a job for another day. Dilip Kumar, with some corrections and cosmetic changes by me. The larger patch set of which this is a part has been reviewed and tested by (at least) Andres Freund, Amit Khandekar, Tushar Ahuja, Rafia Sabih, Haribabu Kommi, Thomas Munro, and me. Discussion: http://postgr.es/m/CAFiTN-uc4=0WxRGfCzs-xfkMYcSEWUC-Fon6thkJGjkh9i=13A@mail.gmail.com --- src/include/optimizer/pathnode.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'src/include/optimizer/pathnode.h') diff --git a/src/include/optimizer/pathnode.h b/src/include/optimizer/pathnode.h index befe5781416..f0fe8307224 100644 --- a/src/include/optimizer/pathnode.h +++ b/src/include/optimizer/pathnode.h @@ -53,7 +53,8 @@ extern BitmapHeapPath *create_bitmap_heap_path(PlannerInfo *root, RelOptInfo *rel, Path *bitmapqual, Relids required_outer, - double loop_count); + double loop_count, + int parallel_degree); extern BitmapAndPath *create_bitmap_and_path(PlannerInfo *root, RelOptInfo *rel, List *bitmapquals); -- cgit v1.2.3