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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2016-07-03 16:55:27 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2016-07-03 16:55:27 -0400 |
| commit | 2c6e6471af9f5b6e4d1b25814a86a1dbd2eb928a (patch) | |
| tree | 80b1f11f8aaf4ea724e82b2505433e168647d2fa /src | |
| parent | 0e495c5e2f97aa7e2323705a6daed73cdd6c168c (diff) | |
| download | postgresql-2c6e6471af9f5b6e4d1b25814a86a1dbd2eb928a.tar.gz postgresql-2c6e6471af9f5b6e4d1b25814a86a1dbd2eb928a.zip | |
Allow treating TABLESAMPLE scans as parallel-safe.
This was the intention all along, but an extraneous "return;" in
set_rel_consider_parallel() caused sampled rels to never be marked
consider_parallel.
Since we don't have any partial tablesample path/plan type yet, there's
no possibility of parallelizing the sample scan itself; but this fix
allows such a scan to appear below a parallel join, for example.
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/optimizer/path/allpaths.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c index 2e4b670e069..535d2e69b2b 100644 --- a/src/backend/optimizer/path/allpaths.c +++ b/src/backend/optimizer/path/allpaths.c @@ -538,7 +538,6 @@ set_rel_consider_parallel(PlannerInfo *root, RelOptInfo *rel, if (has_parallel_hazard((Node *) rte->tablesample->args, false)) return; - return; } /* |