diff options
| author | Robert Haas <rhaas@postgresql.org> | 2016-04-08 11:14:56 -0400 |
|---|---|---|
| committer | Robert Haas <rhaas@postgresql.org> | 2016-04-08 11:14:56 -0400 |
| commit | 25fe8b5f1ac93c3ec01519854e4f554b2e57a926 (patch) | |
| tree | 38e7e8d5bbe0d6f6ab67f19eb38d0e2e5fdcd9e5 /src/backend/optimizer/util/relnode.c | |
| parent | b0b64f65054e6b858b845b46298a624aaaea1deb (diff) | |
Add a 'parallel_degree' reloption.
The code that estimates what parallel degree should be uesd for the
scan of a relation is currently rather stupid, so add a parallel_degree
reloption that can be used to override the planner's rather limited
judgement.
Julien Rouhaud, reviewed by David Rowley, James Sewell, Amit Kapila,
and me. Some further hacking by me.
Diffstat (limited to 'src/backend/optimizer/util/relnode.c')
| -rw-r--r-- | src/backend/optimizer/util/relnode.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/backend/optimizer/util/relnode.c b/src/backend/optimizer/util/relnode.c index 802eab3718a..187437b6941 100644 --- a/src/backend/optimizer/util/relnode.c +++ b/src/backend/optimizer/util/relnode.c @@ -107,6 +107,7 @@ build_simple_rel(PlannerInfo *root, int relid, RelOptKind reloptkind) rel->consider_startup = (root->tuple_fraction > 0); rel->consider_param_startup = false; /* might get changed later */ rel->consider_parallel = false; /* might get changed later */ + rel->rel_parallel_degree = -1; /* set up in GetRelationInfo */ rel->reltarget = create_empty_pathtarget(); rel->pathlist = NIL; rel->ppilist = NIL; |