On Tue, Jan 10, 2017 at 8:56 PM, Peter Geoghegan <p...@heroku.com> wrote: > Instead of all this, I suggest copying some of my changes to fd.c, so > that resource ownership within fd.c differentiates between a vfd that > is owned by the backend in the conventional sense, including having a > need to delete at eoxact, as well as a lesser form of ownership where > deletion should not happen.
If multiple processes are using the same file via the BufFile interface, I think that it is absolutely necessary that there should be a provision to track the "attach count" of the BufFile. Each process that reaches EOXact decrements the attach count and when it reaches 0, the process that reduced it to 0 removes the BufFile. I think anything that's based on the notion that leaders will remove files and workers won't is going to be fragile and limiting, and I am going to push hard against any such proposal. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers