Attached is another rebase which adds a note on checksum failure logging for
buffers with ZERO_ON_ERROR, which - apart from being useful information to have
for the user investigating a failure - allows the tests to differentiate
between false positives due to the VM buffer issues discussed in [1].
This patch has now undergone a nontrivial amount of review and testing, have
addressed all review comments and have had no architectural changes in quite
some time. It builds green on CI, and assuming this attached patch also builds
green in CFBot - and no concerns are raised here - I intend to commit this
wihin the next few days ahead of the freeze. The more expensive tests which
are currently enabled will again be moved under PG_TEST_EXTRA to accommodate
for slower machines present in the buildfarm.
--
Daniel Gustafsson
[1] https://postgr.es/m/CAAKRu_bn+e7F4yPFBgFbnP+syJRKyNK092bjD2LKvZW7O4Svag@mail.gmail.com
