Re: pg_recvlogical, stdout and SIGHUP - Mailing list pgsql-hackers

From Heikki Linnakangas
Subject Re: pg_recvlogical, stdout and SIGHUP
Date
Msg-id 53722FA3.9070005@vmware.com
Whole thread Raw
In response to Re: pg_recvlogical, stdout and SIGHUP  (Andres Freund <andres@2ndquadrant.com>)
Responses Re: pg_recvlogical, stdout and SIGHUP
List pgsql-hackers
On 05/13/2014 04:35 PM, Andres Freund wrote:
> On 2014-05-13 16:31:25 +0300, Heikki Linnakangas wrote:
>> Another thing I noticed is that if when the output goes to a file, the file
>> isn't re-opened immediately on SIGHUP. Only after receiving some data from
>> the server. I believe that's also not intentional.
>
> Hm. I can't really get excited about that one. Not doing that seems to
> complicate matters unneccessarily. What's the problem here?

Not sure if it matters in any real-world scenario, but I found it pretty 
surprising while playing with it. It should be trivial to fix; ISTM the 
problem is that there is a "continue" in the loop when select() is 
interrupted by signal, but the re-opening is done after the select() in 
the loop. I think all you need to do is move the check for output_reopen 
to the beginning of the loop.

- Heikki



pgsql-hackers by date:

Previous
From: Tom Lane
Date:
Subject: Re: 9.5: UPDATE/DELETE .. ORDER BY .. LIMIT ..
Next
From: Christoph Berg
Date:
Subject: Re: New timezones used in regression tests