Robert Haas aecf5ee2bb Add new 'old_snapshot' contrib module. ... You can use this to view the contents of the time to XID mapping which the server maintains when old_snapshot_threshold != -1. Being able to view that information may be interesting for users, and it's definitely useful for figuring out whether the mapping is being maintained correctly. It isn't, so that will need to be fixed in a subsequent commit. Patch by me, reviewed by Thomas Munro, Dilip Kumar, Hamid Akhtar. Discussion: http://postgr.es/m/CA+TgmoY=aqf0zjTD+3dUWYkgMiNDegDLFjo+6ze=Wtpik+3XqA@mail.gmail.com		2020-09-24 13:55:47 -04:00
..
Makefile
old_snapshot--1.0.sql
old_snapshot.control
time_mapping.c