Re: [COMMITTERS] pgsql: Provide much better wait information in pg_stat_activity.

On Thu, Mar 10, 2016 at 5:07 PM, Robert Haas <robertmhaas@gmail.com> wrote:
> On Thu, Mar 10, 2016 at 5:05 PM, Robert Haas <robertmhaas@gmail.com> wrote:
>> On Thu, Mar 10, 2016 at 4:51 PM, Pavel Stehule <pavel.stehule@gmail.com> wrote:
>>> Maybe it be clear from attached text file
>>
>> Uh, yikes, that looks messed up, but I wouldn't have thought this
>> commit would have changed anything there one way or the other.  The
>> current query is reported by pgstat_report_activity(), which I didn't
>> touch.  I think.
>
> I just tried this on 9.5 - changing the query only to "select pid,
> state, query from pg_stat_activity"  and doing everything else the
> same - and I see the same behavior there.  So it looks like this is a
> preexisting bug.

Or ... maybe this is intentional behavior?  Now that I think about it,
doesn't each backend cache this info the first time its transaction
reads the data?

-- 
Robert Haas
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