Horton

Force parallelism in partition_aggregate

Tomas Vondra <tomas.vondra@postgresql.org>

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Commit: 01474f56981a4b27fe5e304a61b0fce2ac025c69
Author: Tomas Vondra <tomas.vondra@postgresql.org>
Date: 2022-09-04T21:37:42Z
Releases: 15.0 
Force parallelism in partition_aggregate

Commit db0d67db2 tweaked sort costing, which however resulted in a
couple plan changes in our regression tests. Most of the new plans were
fine, but partition_aggregate were meant to test parallel plans and the
new plans were serial.

Fix that by lowering parallel_setup_cost to 0, which is enough to switch
to the parallel plan again.

Report and patch by David Rowley.

Author: David Rowley
Reviewed-by: Tomas Vondra
Discussion: https://postgr.es/m/CAApHDvpVFgWzXdtUQkjyOPhNrNvumRi_=ftgS79KeAZ92tnHKQ@mail.gmail.com

Files

PathChange+/−
src/test/regress/expected/partition_aggregate.out modified +60 −54
src/test/regress/sql/partition_aggregate.sql modified +3 −0

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