On Mon, Apr 15, 2019 at 09:07:16PM -0400, Tom Lane wrote: > If we're failing to remove it, and it's below the desired freeze > horizon, then we'd darn well better freeze it instead, no? > > Since we know that the tuple only just became dead, I suspect > that the case would be unreachable in practice. But the approach > you propose risks violating the invariant that all old tuples > will either be removed or frozen.
Please note that I have added an open item for this investigation (see "topminnow triggered assertion failure with vacuum_index_cleanup"). -- Michael
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