"Kevin Grittner" wrote: > So now that I'm sure we actually do need code there, I'll add it. Hmmm... First cut at this here: http://git.postgresql.org/gitweb?p=users/kgrittn/postgres.git;a=commitdiff;h=3ccedeb451ee74ee78ef70735782f3550b621eeb It passes all the usual regression tests, the new isolation tests, and the example posted earlier in the thread of a test case which was allowing an anomaly. (That is to say, the anomaly is now prevented.) I didn't get timings, but it *seems* noticeably slower; hopefully that's either subjective or fixable. Any feedback on whether this seems a sane approach to the issue is welcome. -Kevin
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