Re: GIN pending list clean up exposure to SQL
От | Oleg Bartunov |
---|---|
Тема | Re: GIN pending list clean up exposure to SQL |
Дата | |
Msg-id | CAF4Au4w2sNTAWdGPSEthwc0V4TDsi9SChZcLtxhza_-ie6=BKg@mail.gmail.com обсуждение исходный текст |
Ответ на | GIN pending list clean up exposure to SQL (Jeff Janes <jeff.janes@gmail.com>) |
Список | pgsql-hackers |
On Thu, Aug 13, 2015 at 2:19 AM, Jeff Janes <jeff.janes@gmail.com> wrote:
I've written a function which allows users to clean up the pending list. It takes the index name and returns the number of pending list pages deleted.# select * from gin_clean_pending_list('foo_text_array_idx');gin_clean_pending_list------------------------278(1 row)Time: 31994.880 msThis is needed because there needs to be a way to offload this duty from the user backends, and the only other way to intentionaly clean up the list is by vacuum (and the rest of a vacuum can take days to run on a large table). Autoanalyze will also do it, but it hard to arrange for those to occur at need, and unless you drop default_statistics_target very low they can also take a long time. And if you do lower the target, it screws up your statistics, of course.I've currently crammed it into pageinspect, simply because that is where I found the existing code which I used as an exemplar for writing this code.But where does this belong? Core? Its own separate extension?
For a long time we have gevel extension (http://www.sigaev.ru/git/gitweb.cgi?p=gevel.git;a=summary) , which was originally developed to help us debugging indexes, but it's also contains user's functions. Your function could be there, but I have no idea about gevel itself. Probably, it should be restructurized and come to contrib. Do you have time to look into ?
Cheers,Jeff
--
Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-hackers
В списке pgsql-hackers по дате отправления: