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Robert Haas afd12774ae During online checkpoints, insert XLOG_CHECKPOINT_REDO at redo point. ... This allows tools that read the WAL sequentially to identify (possible) redo points when they're reached, rather than only being able to detect them in retrospect when XLOG_CHECKPOINT_ONLINE is found, possibly much later in the WAL stream. There are other possible applications as well; see the discussion links below. Any redo location that precedes the checkpoint location should now point to an XLOG_CHECKPOINT_REDO record, so add a cross-check to verify this. While adjusting the code in CreateCheckPoint() for this patch, I made it call WALInsertLockAcquireExclusive a bit later than before, since there appears to be no need for it to be held while checking whether the system is idle, whether this is an end-of-recovery checkpoint, or what the current timeline is. Bump XLOG_PAGE_MAGIC. Patch by me, based in part on earlier work from Dilip Kumar. Review by Dilip Kumar, Amit Kapila, Andres Freund, and Michael Paquier. Discussion: http://postgr.es/m/CA+TgmoYy-Vc6G9QKcAKNksCa29cv__czr+N9X_QCxEfQVpp_8w@mail.gmail.com Discussion: http://postgr.es/m/20230614194717.jyuw3okxup4cvtbt%40awork3.anarazel.de Discussion: http://postgr.es/m/CA+hUKG+b2ego8=YNW2Ohe9QmSiReh1-ogrv8V_WZpJTqP3O+2w@mail.gmail.com		2 years ago
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oldextversions.sql	Improve a bit the tests of pg_walinspect	3 years ago
pg_walinspect.sql	During online checkpoints, insert XLOG_CHECKPOINT_REDO at redo point.	2 years ago