On Tue, Sep 03, 2019 at 06:30:32PM -0400, Tom Lane wrote: > Oh ... actually, I bet the problem is that the patch thinks it's okay > to immediately free space in PlanCacheRelCallback and friends, rather > than just marking invalid entries as invalid. Nope, you cannot do that. > You can't tell whether that data is being examined in an outer call > level. > > In principle I think you could decrement-the-refcount-and-possibly-free > right away on the gplan, since any outside uses of that ought to have > their own refcounts. But the query_context data isn't refcounted. > Also, some of the failures I saw looked like premature deletion of a > plan, not query_context data, so the patch seems to be too aggressive > on that side too.
We are a couple of months after this update, and the patch has not been updated, so I am marking it as returned with feedack. -- Michael
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