Thread: Crash in edit grid

Crash in edit grid

From
Erwin Brandstetter
Date:
Hi developers! Hi Dave!

Testing 1.6.1 rev: 5709, client Win XP. Host Debian Sarge, PG 8.1.4

A new version is out. Congratulations on your good work! :)

I have run a few tests, found nothing bad, and used it for serious work.
Found something bad though, when I was not looking. Here is what I did:
From within the edit grid I applied a new filter.
_Many_ rows were fetched, so it took a _long_ time before (new) data 
would be displayed.
Got distracted, came back, edited filter and reapplied before the result 
of the previous filter had been displayed.
pgAdmin crashed on me, and with it a dozen windows with unfinished work. :(
Now, I know that a note is being displayed at the bottom left: 
"Refreshing data, please wait" while data is being fetched. But it is 
easily overlooked, and that's what I did.

Trying to reproduce this (no difference if I apply a new filter from 
within or I open the edit grid with the filter option), it crashes 
occasionally. Most of the time I just get an error of this kind:
   An error has occurred:
   server closed the connection unexpectedly       This probably means the server terminated abnormally       before or
whileprocessing the request
 


Possible cure:
Lock the edit grid while waiting for data (hourglass?), or at least 
prevent pgAdmin from crashing.
But please don't leave this footgun loaded for the occasionally poor of 
sight, like me.


Regards
Erwin



Re: Crash in edit grid

From
Erwin Brandstetter
Date:
mike@thegodshalls.com wrote:
> Were you doing that over a vpn connection by chance?
>   
(...)

Hi Mike!

No, this time I have been working via plain TCP/IP to port 5433 in the 
company intranet.From outside the company I usually connect via SSH-tunnel and port 
forwarding, which works just as well. I have not tested vpn, yet.

Regards
Erwin


Re: Crash in edit grid

From
mike
Date:
Were you doing that over a vpn connection by chance?

Pgadmin frequently will get disconnect for me if it is idle for a while
when using it through a vpn connection.  I will still be logged into the
vpn and able to browse my network folders after it has happened so I
know the vpn connection was not completely lost.

Mike
On Thu, 2006-11-30 at 23:16 +0100, Erwin Brandstetter wrote:
> Hi developers! Hi Dave!
> 
> Testing 1.6.1 rev: 5709, client Win XP. Host Debian Sarge, PG 8.1.4
> 
> A new version is out. Congratulations on your good work! :)
> 
> I have run a few tests, found nothing bad, and used it for serious work.
> Found something bad though, when I was not looking. Here is what I did:
> 
>  From within the edit grid I applied a new filter.
> _Many_ rows were fetched, so it took a _long_ time before (new) data 
> would be displayed.
> Got distracted, came back, edited filter and reapplied before the result 
> of the previous filter had been displayed.
> pgAdmin crashed on me, and with it a dozen windows with unfinished work. :(
> Now, I know that a note is being displayed at the bottom left: 
> "Refreshing data, please wait" while data is being fetched. But it is 
> easily overlooked, and that's what I did.
> 
> Trying to reproduce this (no difference if I apply a new filter from 
> within or I open the edit grid with the filter option), it crashes 
> occasionally. Most of the time I just get an error of this kind:
> 
>     An error has occurred:
> 
>     server closed the connection unexpectedly
>         This probably means the server terminated abnormally
>         before or while processing the request
> 
> 
> Possible cure:
> Lock the edit grid while waiting for data (hourglass?), or at least 
> prevent pgAdmin from crashing.
> But please don't leave this footgun loaded for the occasionally poor of 
> sight, like me.
> 
> 
> Regards
> Erwin
> 
> 
> ---------------------------(end of broadcast)---------------------------
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> 
>                http://www.postgresql.org/docs/faq



Re: Crash in edit grid

From
Dave Page
Date:
Erwin Brandstetter wrote:
> Lock the edit grid while waiting for data (hourglass?), or at least 
> prevent pgAdmin from crashing.

Yeah, that's related to those changes I made *way* back when you first 
got involved in the testing. I disabled the refresh whilst the data was 
loading, but didn't consider the Find/Filter dialogue which can trigger 
a refresh itself. Now fixed, thanks.

Regards, Dave.