granicus.if.org Git - postgresql/commit

]> granicus.if.org Git - postgresql/commit

author	Robert Haas <rhaas@postgresql.org>
	Wed, 15 Nov 2017 13:17:29 +0000 (08:17 -0500)
committer	Robert Haas <rhaas@postgresql.org>
	Wed, 15 Nov 2017 13:23:18 +0000 (08:23 -0500)
commit	e5253fdc4f5fe2f38aec47e08c6aee93f934183d
tree	b32d139116adab712dea0cb4ac02a939ff4aebd6	tree \| snapshot
parent	7518049980be1d90264addab003476ae105f70d4	commit \| diff

Add parallel_leader_participation GUC.

Sometimes, for testing, it's useful to have the leader do nothing but
read tuples from workers; and it's possible that could work out better
even in production.

Thomas Munro, reviewed by Amit Kapila and by me. A few final tweaks
by me.

Discussion: http://postgr.es/m/CAEepm=2U++Lp3bNTv2Bv_kkr5NE2pOyHhxU=G0YTa4ZhSYhHiw@mail.gmail.com

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doc/src/sgml/config.sgml		diff \| blob \| history
src/backend/executor/nodeGather.c		diff \| blob \| history
src/backend/executor/nodeGatherMerge.c		diff \| blob \| history
src/backend/optimizer/path/costsize.c		diff \| blob \| history
src/backend/optimizer/plan/planner.c		diff \| blob \| history
src/backend/utils/misc/guc.c		diff \| blob \| history
src/backend/utils/misc/postgresql.conf.sample		diff \| blob \| history
src/include/optimizer/planmain.h		diff \| blob \| history
src/test/regress/expected/select_parallel.out		diff \| blob \| history
src/test/regress/sql/select_parallel.sql		diff \| blob \| history