Horton

Code review for Parallel Append.

Robert Haas <rhaas@postgresql.org>

View on postgr.es
Commit: c759395617765c5bc21db149cf8c3df52f41ccff
Author: Robert Haas <rhaas@postgresql.org>
Date: 2018-01-04T12:56:09Z
Releases: 11.0 
Code review for Parallel Append.

- Remove unnecessary #include mistakenly added in execnodes.h.
- Fix mistake in comment in choose_next_subplan_for_leader.
- Adjust row estimates in cost_append for a possibly-different
  parallel divisor.
- Clamp row estimates in cost_append after operations that may
  not produce integers.

Amit Kapila, with cosmetic adjustments by me.

Discussion: http://postgr.es/m/CAA4eK1+qcbeai3coPpRW=GFCzFeLUsuY4T-AKHqMjxpEGZBPQg@mail.gmail.com

Files

PathChange+/−
src/backend/executor/nodeAppend.c modified +3 −4
src/backend/optimizer/path/costsize.c modified +12 −4
src/include/nodes/execnodes.h modified +0 −1

Discussion