Thomas Munro <thomas.mu...@gmail.com> writes: > Interesting, but I'm not sure how that could be though. Perhaps, a > bit like the other thing that cropped up in the build farm after that > commit, removing ~200ms of needless sleeping around an earlier online > CHECKPOINT made some other pre-existing race condition more likely to > go wrong.
The data that we've got is entirely consistent with the idea that there's a timing-sensitive bug that gets made more or less likely to trigger by "unrelated" changes in test cases or server code. regards, tom lane