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Eliminate "parallel degree" terminology.

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This terminology provoked widespread complaints.  So, instead, rename
the GUC max_parallel_degree to max_parallel_workers_per_gather
(leaving room for a possible future GUC max_parallel_workers that acts
as a system-wide limit), and rename the parallel_degree reloption to
parallel_workers.  Rename structure members to match.

These changes create a dump/restore hazard for users of PostgreSQL
9.6beta1 who have set the reloption (or applied the GUC using ALTER
USER or ALTER DATABASE).
This commit is contained in:
Robert Haas
2016-06-09 09:08:27 -04:00
parent 6581e930a8
commit c9ce4a1c61
19 changed files with 99 additions and 99 deletions
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2
src/backend/optimizer/plan/createplan.c
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@ -1394,7 +1394,7 @@ create_gather_plan(PlannerInfo *root, GatherPath *best_path)
gather_plan = make_gather(tlist,
NIL,
best_path->path.parallel_degree,
best_path->path.parallel_workers,
best_path->single_copy,
subplan);