From 5262f7a4fc44f651241d2ff1fa688dd664a34874 Mon Sep 17 00:00:00 2001 From: Robert Haas Date: Wed, 15 Feb 2017 13:53:24 -0500 Subject: Add optimizer and executor support for parallel index scans. In combination with 569174f1be92be93f5366212cc46960d28a5c5cd, which taught the btree AM how to perform parallel index scans, this allows parallel index scan plans on btree indexes. This infrastructure should be general enough to support parallel index scans for other index AMs as well, if someone updates them to support parallel scans. Amit Kapila, reviewed and tested by Anastasia Lubennikova, Tushar Ahuja, and Haribabu Kommi, and me. --- src/include/optimizer/paths.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'src/include/optimizer/paths.h') diff --git a/src/include/optimizer/paths.h b/src/include/optimizer/paths.h index 81e7a4274da..ebda308c416 100644 --- a/src/include/optimizer/paths.h +++ b/src/include/optimizer/paths.h @@ -54,6 +54,8 @@ extern RelOptInfo *standard_join_search(PlannerInfo *root, int levels_needed, List *initial_rels); extern void generate_gather_paths(PlannerInfo *root, RelOptInfo *rel); +extern int compute_parallel_worker(RelOptInfo *rel, BlockNumber heap_pages, + BlockNumber index_pages); #ifdef OPTIMIZER_DEBUG extern void debug_print_rel(PlannerInfo *root, RelOptInfo *rel); -- cgit v1.2.3