Re: Client failure allows backed to continue

Tom Lane wrote:
> Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> > As part of the training class I did, some people tested what happens
> > when the client allocates tons of memory to store a result and aborts.
>
> > What we found was that though elog was properly called:
>
> > elog(COMMERROR, "pq_recvbuf: recv() failed: %m");
>
> > (I think that was the message.) the backend did not exit and kept
> > eating CPU. I think the problem is that the elog code only exits on
> > ERROR, not COMMERROR. Is there some way to fix this?
>
> There's been talk of setting the QueryCancel flag after detecting a
> client communication failure ... but no one has ever done the legwork
> to see if that works nicely, or what downsides it might have.

Why is COMMERROR not doing the longjump like ERROR?

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