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["Stefan Hornburg (Racke)" <address@concealed>]

On 11/9/18 6:03 PM, Miles Fidelman wrote:
> On 11/9/18 5:50 AM, Stefan Hornburg (Racke) wrote:
> 
>> On 10/30/18 5:59 PM, Matt Taggart wrote:
>>> On 10/29/2018 11:39 AM, Miles Fidelman wrote:
>>>
>>>> Any suggestions as to:
>>>>
>>>> - things that might cause sympa.pl to die abnormally?
>>>>
>>>> - any diagnostic tricks (higher log levels, where to set them, etc?)
>>> We have seen UTF8 bugs that cause this. We end up doing a binary search
>>> of the messages in the spool until we figure out which one is crashing
>>> it. We haven't seen it much lately, I suspect that we moved to newer
>>> perl libraries and some bug was fixed.
>>>
>> In my opinion Sympa should handle this situation gracefully, as a single 
>> message can bring the Sympa system to a
>> grinding halt without even a notification to the listmaster.
>>
>> Regards
>>           Racke
>>
> I don't think you're going to see any objections to that notion! :-)
> 
> I expect that it's easier said than done, particularly when things crash in 
> external libraries.
> 
> Though... it might be simple enough to checkpoint when starting to process 
> a message, and then setting a watchdog to
> look for crashes, and then do some exception handling (log, set the message 
> aside, notify the listmaster, restart).
> 

My idea would to move the message file before processing, so Sympa doesn't 
crash again when it is restarted (which
systemd can do automatically).

And of course the listmaster should be notified.

> Anybody on the coding team care to comment?

I'm going to have a closer look at the code in question.

So it would also good to gather the information about the crashes. The one I 
got recently:

Nov  7 08:34:18 post sympa_msg[12414]: err main::#243 > 
Sympa::Spindle::spin#92 > Sympa::Spindle::DoMessage::_twist#92 >
Sympa::Spindle::DoMessage::_check_command#158 > 
Sympa::Message::get_plain_body#2176 > MIME::Charset::new#432 >
MIME::Charset::_find_encoder#467 > (eval)#1 > (eval)#1 > 
MIME::Charset::BEGIN#1 DIED: Can't locate Encode/EUCJPASCII.pm
in @INC (you may need to install the Encode::EUCJPASCII module) (@INC 
contains: /usr/share/sympa/lib /etc/perl
/usr/local/lib/x86_64-linux-gnu/perl/5.20.2 /usr/local/share/perl/5.20.2 
/usr/lib/x86_64-linux-gnu/perl5/5.20
/usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl/5.20 /usr/share/perl/5.20 
/usr/local/lib/site_perl .) at (eval 208) line 1.

The MIME part had these content settings:

Content-Type: text/plain;
        charset="iso-2022-jp"
Content-Transfer-Encoding: quoted-printable

Regards
         Racke

> 
> Regards,
> 
> Miles
> 
> 
> 


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