On 19 December 2013 19:19, Thom Brown <thom@linux.com> wrote: > On 12 December 2013 10:56, Simon Riggs <simon@2ndquadrant.com> wrote: >> Allow time delayed standbys and recovery >> >> Set min_recovery_apply_delay to force a delay in recovery apply for commit and >> restore point WAL records. Other records are replayed immediately. Delay is >> measured between WAL record time and local standby time. >> >> Robert Haas, Fabrízio de Royes Mello and Simon Riggs >> Detailed review by Mitsumasa Kondo > > Could a note be added about the additional disk space requirements for > WAL on the standby? If one is delaying replay, WAL files created over > the delayed period will build up in pg_xlog on the standby until > they're consumed upon replay, so considerations about storing those > additional files will need to be made. It may otherwise trip up > anyone who, say, delays replay by 24 hours in a busy production > environment, and finds they have run out of disk space and no longer > have a valid standby.
Thanks Thom, good point. I will add a note to the docs.
Just a reminder that this note hasn't been added to the docs yet.
