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Tomas Vondra 0cf205e122 amcheck: Fix posting tree checks in gin_index_check() ... Fix two issues in parent_key validation in posting trees: * It's not enough to check stack->parentblk is valid to determine if the parentkey is valid. It's possible parentblk is set to a valid block number, but parentkey is invalid. So check parentkey directly. * We don't need to invalidate parentkey for all child pages of the rightmost page. It's enough to invalidate it for the rightmost child only, which means we can check more cases (less false negatives). Issues reported by Arseniy Mukhin, along with a proposed patch. Review by Andrey M. Borodin, cleanup and improvements by me. Author: Arseniy Mukhin <arseniy.mukhin.dev@gmail.com> Reviewed-by: Andrey M. Borodin <x4mmm@yandex-team.ru> Discussion: https://postgr.es/m/CAE7r3MJ611B9TE=YqBBncewp7-k64VWs+sjk7XF6fJUX77uFBA@mail.gmail.com		2 weeks ago
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expected	amcheck: Test gin_index_check on a multicolumn index	2 weeks ago
sql	amcheck: Test gin_index_check on a multicolumn index	2 weeks ago
t	amcheck: Fix posting tree checks in gin_index_check()	2 weeks ago
.gitignore	Add .gitignore to contrib/amcheck.	8 years ago
Makefile	amcheck: Add gin_index_check() to verify GIN index	3 months ago
amcheck--1.0--1.1.sql	Add amcheck verification of heap relations belonging to btree indexes.	7 years ago
amcheck--1.0.sql	Add amcheck extension to contrib.	8 years ago
amcheck--1.1--1.2.sql	Allow amcheck to re-find tuples using new search.	6 years ago
amcheck--1.2--1.3.sql	Extend amcheck to check heap pages.	5 years ago
amcheck--1.3--1.4.sql	Teach contrib/amcheck to check the unique constraint violation	2 years ago
amcheck--1.4--1.5.sql	amcheck: Add gin_index_check() to verify GIN index	3 months ago
amcheck.control	amcheck: Add gin_index_check() to verify GIN index	3 months ago
meson.build	amcheck: Fix checks of entry order for GIN indexes	2 weeks ago
verify_common.c	amcheck: Move common routines into a separate module	3 months ago
verify_common.h	Fix typos and grammar in the code	2 months ago
verify_gin.c	amcheck: Fix posting tree checks in gin_index_check()	2 weeks ago
verify_heapam.c	Fix a few duplicate words in comments	2 months ago
verify_nbtree.c	amcheck: Move common routines into a separate module	3 months ago