I wrote:
> "Gurjeet Singh" <singh.gurjeet@gmail.com> writes:
>> I saw a strange behaviour on one of the production boxes. The
>> pg_stat_activity shows a process as <IDLE> and yet 'waiting' !!! On top of
>> it (understandably, since its IDLE), there are no entries for this pid in
>> pg_locks!

> Hmm, I can reproduce something like this by aborting a wait for lock.
> It seems the problem is that WaitOnLock() is ignoring its own good
> advice, assuming that it can do cleanup work after waiting.

I've committed a fix for this. (Too late for 8.3.0, unfortunately.)

regards, tom lane

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