3rd iteration ; thanks for bearing with me. On Tue, May 08, 2018 at 12:35:00PM +0300, Alexander Korotkov wrote: > Hi, Justin! > > Thank you for revising documentation patch. > > On Mon, May 7, 2018 at 7:55 PM, Justin Pryzby <pry...@telsasoft.com> wrote:
+ In order to detect stale index statistics, the number of total heap + tuples during previous statistics collection is stored in the index + meta-page. Consider removing: "during previous statistics collection" Or: "during THE previous statistics collection" + Once the number of inserted tuples since previous since THE previous + statistics collection is more than + <varname>vacuum_cleanup_index_scale_factor</varname> fraction of Since the multiplier can be greater than 1, should we say "multiple" instead of fraction? + during <command>VACUUM</command> cycle. Thus, skipping of the B-tree + index scan during cleanup stage is only possible when second and + subsequent <command>VACUUM</command> cycles detecting no dead tuples. Change "detecting" to "detect". Or maybe just "find" Justin
