Tom Lane wrote:
I have noticed an increasing tendency among the buildfarm crew to think that the regression tests should show zero diffs on all platforms no matter what. That is not the design goal. The intent is to tell you about possible problems. If you decide that a particular diff isn't really a problem, fine, but that doesn't mean we should mask the same symptom everywhere.
I don't want to mask anything that shouldn't be. I made the suggestion in this particular case because we already have a number of alternative result files caused by FP differences.
The buildfarm is a dashboard application - when everything is OK you want it to show all green. If that's not a goal, then some redesign is appropriate. Perhaps buildfarm needs its own test suite, rather than leveraging those in the distribution, although that would be a pity, to say the least.
cheers
andrew
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