Re: Query on pg_stat_activity table got stuck - Mailing list pgsql-admin

From neeraj kumar
Subject Re: Query on pg_stat_activity table got stuck
Date
Msg-id CAPR3Wj7xT0jsjZDO=TW44x1hMR6-jFebX7uvZ+nCJu15XyL-dg@mail.gmail.com
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In response to Re: Query on pg_stat_activity table got stuck  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: Query on pg_stat_activity table got stuck
Re: Query on pg_stat_activity table got stuck
List pgsql-admin
--> But the right answer is to fix it on the writing side.
Yes I agree with this part. Even though there is very low probability, a process can still be killed in middle when writing. So what is your suggestion on how to recover from this automatically?

On Fri, May 10, 2019 at 9:14 AM Tom Lane <tgl@sss.pgh.pa.us> wrote:
neeraj kumar <neeru.cse@gmail.com> writes:
> Also curious why query on pg_stat_activity is considering terminated
> process ?

The short answer to that is that this bug leaves shared memory in
a corrupt state.  It's not really useful to worry about whether
readers should react differently to that --- you could spend endless
amounts of time hypothesizing different kinds of corruption and
endless amounts of code/cycles trying to work around it.  But the
right answer is to fix it on the writing side.

                        regards, tom lane


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Neeraj Kumar,
+1  (206) 427-7267

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