cluster: fix core count invariant check #3645
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Save the high water mark of core count, rather than just the original first-startup value. This way we refuse to decrease after increasing, rather than only refusing to decrease relative to first startup. Fixes: redpanda-data#3644
This exercises how redpanda behaves when the CPU count of a node changes.
jcsp
requested review from
dotnwat,
ivotron,
NyaliaLui,
VadimPlh and
ztlpn
as code owners
mmaslankaprv
approved these changes
Jan 28, 2022
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Cover letter
Save the high water mark of core count, rather than
just the original first-startup value. This way we
refuse to decrease after increasing, rather than
only refusing to decrease relative to first startup.
Fixes: #3644
Release notes
Improvements