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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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6
src/backend/access/common/reloptions.c
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@ -270,7 +270,7 @@ static relopt_int intRelOpts[] =
},
{
{
"parallel_degree",
"parallel_workers",
"Number of parallel processes that can be used per executor node for this relation.",
RELOPT_KIND_HEAP,
AccessExclusiveLock
@ -1301,8 +1301,8 @@ default_reloptions(Datum reloptions, bool validate, relopt_kind kind)
offsetof(StdRdOptions, autovacuum) +offsetof(AutoVacOpts, analyze_scale_factor)},
{"user_catalog_table", RELOPT_TYPE_BOOL,
offsetof(StdRdOptions, user_catalog_table)},
{"parallel_degree", RELOPT_TYPE_INT,
offsetof(StdRdOptions, parallel_degree)}
{"parallel_workers", RELOPT_TYPE_INT,
offsetof(StdRdOptions, parallel_workers)}
};
options = parseRelOptions(reloptions, validate, kind, &numoptions);