Re: Network write errors (was: Re: Feature freeze date for

Andrew - Supernews wrote:
> On 2005-05-01, Peter Eisentraut <peter_e@gmx.net> wrote:
> > The problem, as I understand it, is that if you have a long-running 
> > query and the client process disappears, the query keeps running and 
> > holds whatever resources it may have until it finishes.  In fact, it 
> > keeps sending data to the client and keeps ignoring the SIGPIPE it gets 
> > (in case of a Unix-domain socket connection).
> 
> Ignoring the SIGPIPE is exactly the right thing to do.
> 
> What's _not_ a good idea is ignoring the EPIPE error from write(), which
> seems to currently be reported via ereport(COMMERROR) which doesn't try
> and abort the query as far as I can tell.

Where are you seeing this?  I looked from PostgresMain() to
ReadCommand() to SocketBackend() to pq_getbyte() which returns EOF, and
PostgresMain checks that and does a proc_exit(0).

I think the main problem is that a long-running query never tries to
interact with the client during the query.

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