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Tom Lane 5a4b8a8a72 Improve contrib/amcheck's tests for CREATE INDEX CONCURRENTLY. ... Commits fdd965d07 and 3cd9c3b92 tested CREATE INDEX CONCURRENTLY by launching two separate pgbench runs concurrently. This was needed so that only a single client thread would run CREATE INDEX CONCURRENTLY, avoiding deadlock between two CICs. However, there's a better way, which is to use an advisory lock to prevent concurrent CICs. That's better in part because the test code is shorter and more readable, but mostly because it automatically scales things to launch an appropriate number of CICs relative to the number of INSERT transactions. As committed, typically half to three-quarters of the CIC transactions were pointless because the INSERT transactions had already stopped. In passing, remove background_pgbench, which was added to support these tests and isn't needed anymore. We can always put it back if we find a use for it later. Back-patch to v12; older pgbench versions lack the conditional-execution features needed for this method. Tom Lane and Andrey Borodin Discussion: https://postgr.es/m/139687.1635277318@sss.pgh.pa.us		5 years ago
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expected	Restore lost amcheck TOAST test coverage.	6 years ago
sql	Restore lost amcheck TOAST test coverage.	6 years ago
t	Improve contrib/amcheck's tests for CREATE INDEX CONCURRENTLY.	5 years ago
.gitignore	…
Makefile	Avoid race in RelationBuildDesc() affecting CREATE INDEX CONCURRENTLY.	5 years ago
amcheck--1.0--1.1.sql	Add amcheck verification of heap relations belonging to btree indexes.	8 years ago
amcheck--1.0.sql	…
amcheck--1.1--1.2.sql	Allow amcheck to re-find tuples using new search.	7 years ago
amcheck.control	Allow amcheck to re-find tuples using new search.	7 years ago
verify_nbtree.c	Fix amcheck child check pg_upgrade bug.	6 years ago