On Tue, May 30, 2017 at 11:07 PM, Amit Kapila <amit.kapil...@gmail.com> wrote: > On Tue, May 30, 2017 at 6:32 AM, Masahiko Sawada <sawada.m...@gmail.com> > wrote: >> Hi, >> >> While reading source code, I realized that comment of GetOldestXmin mentions; >> >> * if rel = NULL and there are no transactions running in the current >> * database, GetOldestXmin() returns latestCompletedXid. >> >> However, in that case if I understand correctly GetOldestXmin() >> actually returns latestCompletedXid + 1 as follows; >> > > Isn't there another gotcha in above part of the comment, shouldn't it > say rel != NULL? AFAICS, when rel is NULL, it considers all databases > not only current database. >
Hmm it could return latestCompletedXid in that case. I think I understood now, Thank you! Regards, -- Masahiko Sawada NIPPON TELEGRAPH AND TELEPHONE CORPORATION NTT Open Source Software Center -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
