Reduce lock levels for table storage params related to planning

Simon Riggs <simon@2ndQuadrant.com>

Commit: 21d4e2e20656381b4652eb675af4f6d65053607f
Author: Simon Riggs <simon@2ndQuadrant.com>
Date: 2017-03-06T10:34:31Z
Releases: 10.0
Reduce lock levels for table storage params related to planning

The following parameters are now updateable with ShareUpdateExclusiveLock
effective_io_concurrency
parallel_workers
seq_page_cost
random_page_cost
n_distinct
n_distinct_inherited

Simon Riggs and Fabrízio Mello

Files

PathChange+/−
src/backend/access/common/reloptions.c modified +43 −7
src/backend/utils/cache/spccache.c modified +11 −0