Hi, On 2022-02-08 22:13:01 +0100, Tomas Vondra wrote: > On 10/24/21 03:40, Noah Misch wrote: > > Avoid race in RelationBuildDesc() affecting CREATE INDEX CONCURRENTLY. > > > > CIC and REINDEX CONCURRENTLY assume backends see their catalog changes > > no later than each backend's next transaction start. That failed to > > hold when a backend absorbed a relevant invalidation in the middle of > > running RelationBuildDesc() on the CIC index. Queries that use the > > resulting index can silently fail to find rows. Fix this for future > > index builds by making RelationBuildDesc() loop until it finishes > > without accepting a relevant invalidation. It may be necessary to > > reindex to recover from past occurrences; REINDEX CONCURRENTLY suffices. > > Back-patch to 9.6 (all supported versions). > > > > Noah Misch and Andrey Borodin, reviewed (in earlier versions) by Andres > > Freund. > > > > Discussion: https://postgr.es/m/20210730022548.ga1940...@gust.leadboat.com > > > > Unfortunately, this seems to have broken CLOBBER_CACHE_ALWAYS builds. Since > this commit, initdb never completes due to infinite retrying over and over > (on the first RelationBuildDesc call).
Ugh. Do we need to do something about WRT the next set of minor releases? Is there a a chance of this occuring in "real" workloads? Greetings, Andres Freund
