[Yum] Re: Horrible response to keyboardInterrupt

[CAI Qian]

Hi,

--- Brian Long <brilong at cisco.com> wrote:

> On Thu, 2008-09-11 at 22:30 -0700, CAI Qian wrote:
> > Hi,
> > 
> > --- Seth Vidal <skvidal at fedoraproject.org> wrote:
> > 
> > > On Thu, 2008-09-11 at 21:17 -0700, CAI Qian wrote:
> > > 
> > > > I think it is of yum users' interests when making language
> > > decision.
> > > 
> > > making a language decision? whatever.
> > > 
> > > > There is another example of bad usability for handling CTRL-C,
> > > > 
> > > > [root at localhost ~]# yum -d 10 update
> > > > Config time: 0.107
> > > > Yum Version: 3.2.19
> > > > COMMAND: yum -d 10 update 
> > > > Installroot: /
> > > > Reading Local RPMDB
> > > > rpmdb time: 0.001
> > > > Setting up Package Sacks
> > > > pkgsack time: 0.003
> > > > Setting up Update Process
> > > > Building updates object
> > > > ^C^C^C^C^C^C^C^C^C^C^C^C^C^C^Cup:Obs Init time: 0.733
> > > > ^C^Cputting kpathsea in complex update
> > > > 
> > > > ...
> > > > 
> > > > You could see from the above, I have to hit CTRL-C more than 10
> > > times
> > > > in order to cancel the operation. Far more than tolerant for
> > > reasonable
> > > > user experience. Is it the same thing as the Python socket
> handling
> > > > bug?
> > > > 
> > > 
> > > Actually, you don't have to hit it that many times. You are
> hitting
> > > it
> > > that many times. What's happening at that particular point is
> that
> > > the
> > > rpmdb is being accessed. At which point rpm is holding the signal
> > > handler that would allow that interrupt to work.
> > > 
> > 
> > OK, but it makes some commands unable to be cancelled, like
> > 
> >   check-update
> > 
> > It accessed DB, and print out things even if users don't want it
> > afterwards.
> > 
> > In addition, if a user realized that he made a bad search (too many
> > results), like
> > 
> >   yum -d 10 search file
> > 
> > and would like to cancel it later just immediately after starting
> to
> > print out search results, he/she couldn't, and he/she had to wait a
> > long time after almost all results returned back.
> > 
> > Moreover, it is confusion and untidy to see those random backtraces
> > when a user just want to cancel an yum operation.
> > 
> > [root at localhost yum-3.2.19]# yum -d 10 search file
> > ^CTraceback (most recent call last):
> >   File "/usr/bin/yum", line 4, in <module>
> >     import yum
> >   File "/usr/lib/python2.5/site-packages/yum/__init__.py", line 30,
> in
> > <module>
> >     import logging
> >   File "/usr/lib64/python2.5/logging/__init__.py", line 29, in
> <module>
> > ^C    import sys, os, types, time, string, cStringIO, traceback
> > [root at localhost yum-3.2.19]# yum -d 10 search file
> > ^CTraceback (most recent call last):
> >   File "/usr/bin/yum", line 4, in <module>
> >     import yum
> >   File "/usr/lib/python2.5/site-packages/yum/__init__.py", line 39,
> in
> > <module>
> >     from iniparse.compat import ParsingError, ConfigParser
> >   File "/usr/lib/python2.5/site-packages/iniparse/__init__.py",
> line 1,
> > in <module>
> >     from ini import INIConfig
> >   File "/usr/lib/python2.5/site-packages/iniparse/ini.py", line 38,
> in
> > <module>
> >     """
> > KeyboardInterrupt
> > 
> > Cai Qian
> 
> Cai Qian,
> yum is an open-source project.  If you feel improvements can be made
> to
> the software because of particular use cases which affect you, write
> a
> patch and submit it.
> 

Sorry, I can't. I am not a programmer, but an user. I have neither
interest to learn nor enough experience for programming. 

> I seriously doubt yum will ever move away from python.  Python is the
> language of choice and you'll need to work around it's deficiencies. 
> If
> you find Python bugs, submit patches to the maintainer.
> 

>From an user point of view, I don't care about which language yum is
currently using, and I only care about yum not Python, that is why I
spent time on this list.

> Coming onto a user list and acting like the sky is falling and
> everyone
> needs to drop what they're doing and work on your problem is not
> going
> to win you any friends.  I recommend you find a way to participate in
> the yum community instead of bashing it.
> 

Whether winning friends or not is not my concern, I am worry about
other users may have the same pains.

Cai Qian

> /Brian/
> 
> -- 
>        Brian Long                             |       |
>                                           . | | | . | | | .
>                                               '       '
>                                               C I S C O
> 
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