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Tom Lane 1273a15bf9 Disable cache clobber to avoid breaking postgres_fdw termination test. ... Commit 93f414614 improved a pre-existing test case so that it would show whether or not termination of the "remote" worker process happened. This soon exposed that, when debug_invalidate_system_caches_always (nee CLOBBER_CACHE_ALWAYS) is enabled, no such termination occurs. That's because cache invalidation forces postgres_fdw connections to be dropped at end of transaction, so that there's no worker to terminate. There's a race condition as to whether the worker will manage to get out of the BackendStatusArray before we look, but at least on buildfarm member hyrax, it's failed twice in two attempts. Rather than re-lobotomizing the test, let's fix this by transiently disabling debug_invalidate_system_caches_always. (Hooray for that being just a GUC nowadays, rather than a compile-time option.) If this proves not to be enough to make the test stable, we can do the other thing instead. Discussion: https://postgr.es/m/3854538.1620081771@sss.pgh.pa.us		4 years ago
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postgres_fdw.out	Disable cache clobber to avoid breaking postgres_fdw termination test.	4 years ago