Re: BUG #17903: There is a bug in the KeepLogSeg()
Kyotaro Horiguchi <horikyota.ntt@gmail.com>
From: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
To: nathandbossart@gmail.com
Cc: zhjwpku@gmail.com, xu.xw2008@163.com, pgsql-bugs@lists.postgresql.org
Date: 2023-04-28T06:21:49Z
Lists: pgsql-bugs
At Thu, 27 Apr 2023 14:47:46 -0700, Nathan Bossart <nathandbossart@gmail.com> wrote in > On Tue, Apr 25, 2023 at 01:14:52PM +0900, Kyotaro Horiguchi wrote: > > At Mon, 24 Apr 2023 12:14:52 -0700, Nathan Bossart <nathandbossart@gmail.com> wrote in > >> When determining the oldest segment that must be kept for > >> replication slots, KeepLogSeg() might calculate a segment number > >> ahead of the one for the LSN given to the function. This causes > > > > Maybe the KeepLogSeg() is a mistake of > > XLogGetReplicationSlotMinimumLSN()? > > I adjusted the commit message to call out that function explicitly. Also, > I decided to go with the "keep < recptr" approach since there's no reason > to do anything in that block otherwise. That works, too. Thanks! regards. -- Kyotaro Horiguchi NTT Open Source Software Center
Commits
-
Prevent underflow in KeepLogSeg().
- be40dd63e00d 13.11 landed
- 137003036972 14.8 landed
- c98b06e2f865 15.3 landed
- b72623671d9c 16.0 landed