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5f0762f147
Avoid "right sibling %u of block %u is not next child" errors when vacuuming a corrupt nbtree index. Just LOG the issue and press on. That way VACUUM will have a decent chance of finishing off all required processing for the index (and for the table as a whole). This is similar to recent work from commit5abff197, as well as work from commit5b861baa(later backpatched as commit43e409ce), which taught nbtree VACUUM to keep going when its "re-find" check fails. The hardening added by this commit takes place directly after the "re-find" check, right before the critical section for the first stage of page deletion. Author: Peter Geoghegan <pg@bowt.ie> Discussion: https://postgr.es/m/CAH2-Wz=dayg0vjs4+er84TS9ami=csdzjpuiCGbEw=idhwqhzQ@mail.gmail.com Backpatch: 11- (all supported versions).