On 2013-12-03 19:55:40 -0300, Alvaro Herrera wrote:
> I added a new isolation spec to test this specific case, and noticed
> something that seems curious to me when that test is run in REPEATABLE
> READ mode: when the UPDATE is aborted, the concurrent FOR UPDATE gets a
> "can't serialize due to concurrent update", but when the UPDATE is
> committed, FOR UPDATE works fine. Shouldn't it happen pretty much
> exactly the other way around?
That's 247c76a989097f1b4ab6fae898f24e75aa27fc1b . Specifically the
DidCommit() branch in test_lockmode_for_conflict(). You forgot something
akin to
/* locker has finished, all good to go */
if (!ISUPDATE_from_mxstatus(status))
return HeapTupleMayBeUpdated;
Greetings,
Andres Freund
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