[ovirt-devel] [ENGINE] thoughts about LinqUtils

Thu Aug 28 23:52:51 UTC 2014

Thanks everyone for your thoughts.
I would like to sum things up (as I understood from this thread) -
a. We will defer the move to commons collections4.
b. We should introduce some class renaming, not have LinqXXX
c. Later on we can shift to an "already maintained" package.

----- Original Message -----
> From: "Vojtech Szocs" <vszocs at redhat.com>
> To: "Greg Sheremeta" <gshereme at redhat.com>
> Cc: "Yair Zaslavsky" <yzaslavs at redhat.com>, devel at ovirt.org
> Sent: Thursday, August 28, 2014 4:49:57 PM
> Subject: Re: [ovirt-devel] [ENGINE] thoughts about LinqUtils
> 
> 
> 
> ----- Original Message -----
> > From: "Greg Sheremeta" <gshereme at redhat.com>
> > To: "Yair Zaslavsky" <yzaslavs at redhat.com>
> > Cc: devel at ovirt.org
> > Sent: Monday, August 25, 2014 1:52:44 PM
> > Subject: Re: [ovirt-devel] [ENGINE] thoughts about LinqUtils
> > 
> > 
> > 
> > ----- Original Message -----
> > > From: "Yair Zaslavsky" <yzaslavs at redhat.com>
> > > To: "Alon Bar-Lev" <alonbl at redhat.com>
> > > Cc: "Greg Sheremeta" <gshereme at redhat.com>, "Itamar Heim"
> > > <iheim at redhat.com>, devel at ovirt.org
> > > Sent: Sunday, August 24, 2014 9:51:31 PM
> > > Subject: Re: [ovirt-devel] [ENGINE] thoughts about LinqUtils
> > > 
> > > 
> > > 
> > > ----- Original Message -----
> > > > From: "Alon Bar-Lev" <alonbl at redhat.com>
> > > > To: "Greg Sheremeta" <gshereme at redhat.com>
> > > > Cc: "Yair Zaslavsky" <yzaslavs at redhat.com>, "Itamar Heim"
> > > > <iheim at redhat.com>, devel at ovirt.org
> > > > Sent: Friday, August 22, 2014 11:36:31 PM
> > > > Subject: Re: [ovirt-devel] [ENGINE] thoughts about LinqUtils
> > > > 
> > > > 
> > > > 
> > > > ----- Original Message -----
> > > > > From: "Greg Sheremeta" <gshereme at redhat.com>
> > > > > To: "Alon Bar-Lev" <alonbl at redhat.com>
> > > > > Cc: "Yair Zaslavsky" <yzaslavs at redhat.com>, "Itamar Heim"
> > > > > <iheim at redhat.com>, devel at ovirt.org
> > > > > Sent: Friday, August 22, 2014 11:33:09 PM
> > > > > Subject: Re: [ovirt-devel] [ENGINE] thoughts about LinqUtils
> > > > > 
> > > > > 
> > > > > 
> > > > > ----- Original Message -----
> > > > > > From: "Alon Bar-Lev" <alonbl at redhat.com>
> > > > > > To: "Greg Sheremeta" <gshereme at redhat.com>
> > > > > > Cc: "Yair Zaslavsky" <yzaslavs at redhat.com>, "Itamar Heim"
> > > > > > <iheim at redhat.com>, devel at ovirt.org
> > > > > > Sent: Friday, August 22, 2014 4:20:19 PM
> > > > > > Subject: Re: [ovirt-devel] [ENGINE] thoughts about LinqUtils
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > ----- Original Message -----
> > > > > > > From: "Greg Sheremeta" <gshereme at redhat.com>
> > > > > > > To: "Yair Zaslavsky" <yzaslavs at redhat.com>
> > > > > > > Cc: "Itamar Heim" <iheim at redhat.com>, devel at ovirt.org, "Alon
> > > > > > > Bar-Lev"
> > > > > > > <alonbl at redhat.com>
> > > > > > > Sent: Friday, August 22, 2014 8:39:54 PM
> > > > > > > Subject: Re: [ovirt-devel] [ENGINE] thoughts about LinqUtils
> > > > > > > 
> > > > > > > 
> > > > > > > 
> > > > > > > ----- Original Message -----
> > > > > > > > From: "Yair Zaslavsky" <yzaslavs at redhat.com>
> > > > > > > > To: "Itamar Heim" <iheim at redhat.com>
> > > > > > > > Cc: devel at ovirt.org
> > > > > > > > Sent: Thursday, August 21, 2014 8:39:31 PM
> > > > > > > > Subject: Re: [ovirt-devel] [ENGINE] thoughts about LinqUtils
> > > > > > > > 
> > > > > > > > 
> > > > > > > > 
> > > > > > > > ----- Original Message -----
> > > > > > > > > From: "Itamar Heim" <iheim at redhat.com>
> > > > > > > > > To: "Yair Zaslavsky" <yzaslavs at redhat.com>, "Yevgeny
> > > > > > > > > Zaspitsky"
> > > > > > > > > <yzaspits at redhat.com>
> > > > > > > > > Cc: devel at ovirt.org
> > > > > > > > > Sent: Friday, August 22, 2014 12:25:52 AM
> > > > > > > > > Subject: Re: [ovirt-devel] [ENGINE] thoughts about LinqUtils
> > > > > > > > > 
> > > > > > > > > On 08/21/2014 09:55 AM, Yair Zaslavsky wrote:
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > > ----- Original Message -----
> > > > > > > > > >> From: "Yevgeny Zaspitsky" <yzaspits at redhat.com>
> > > > > > > > > >> To: "Yair Zaslavsky" <yzaslavs at redhat.com>
> > > > > > > > > >> Cc: "Moti Asayag" <masayag at redhat.com>, "Allon Mureinik"
> > > > > > > > > >> <amureini at redhat.com>, devel at ovirt.org
> > > > > > > > > >> Sent: Thursday, August 21, 2014 4:35:33 PM
> > > > > > > > > >> Subject: Re: [ovirt-devel] [ENGINE] thoughts about
> > > > > > > > > >> LinqUtils
> > > > > > > > > >>
> > > > > > > > > >> On 21/08/14 12:08, Yair Zaslavsky wrote:
> > > > > > > > > >>>
> > > > > > > > > >>> ----- Original Message -----
> > > > > > > > > >>>> From: "Yevgeny Zaspitsky" <yzaspits at redhat.com>
> > > > > > > > > >>>> To: "Moti Asayag" <masayag at redhat.com>
> > > > > > > > > >>>> Cc: "Yair Zaslavsky" <yzaslavs at redhat.com>, "Allon
> > > > > > > > > >>>> Mureinik"
> > > > > > > > > >>>> <amureini at redhat.com>, devel at ovirt.org
> > > > > > > > > >>>> Sent: Thursday, August 21, 2014 11:26:40 AM
> > > > > > > > > >>>> Subject: Re: [ovirt-devel] [ENGINE] thoughts about
> > > > > > > > > >>>> LinqUtils
> > > > > > > > > >>>>
> > > > > > > > > >>>> It seems like we can try moving to common-collections4.
> > > > > > > > > >>>> Yum
> > > > > > > > > >>>> on
> > > > > > > > > >>>> my
> > > > > > > > > >>>> Fedora20
> > > > > > > > > >>>> computer finds apache-commons-collections4 package.
> > > > > > > > > >>>> Fortunately
> > > > > > > > > >>>> somebody
> > > > > > > > > >>>> packed the jar into for a rpm for us. :-)
> > > > > > > > > >>> What about RHEL 6.5? Can you please run a quick check?
> > > > > > > > > >> Unfortunately my happiness was too hasty. Only Fedora
> > > > > > > > > >> people
> > > > > > > > > >> care
> > > > > > > > > >> to
> > > > > > > > > >> be
> > > > > > > > > >> in the forward of the technology... The RHEL ones do not
> > > > > > > > > >> care
> > > > > > > > > >> about
> > > > > > > > > >> that...
> > > > > > > > > >
> > > > > > > > > > This is what I remembered. When you responded to the email
> > > > > > > > > > for
> > > > > > > > > > the
> > > > > > > > > > first
> > > > > > > > > > time , I had a strong deja vu that you tried addressing
> > > > > > > > > > this
> > > > > > > > > > issue
> > > > > > > > > > yourself in the past (commons-collectios4) - due to
> > > > > > > > > > different
> > > > > > > > > > reason.
> > > > > > > > > >
> > > > > > > > > 
> > > > > > > > > is there a specific conflict or problem (or a huge chain of
> > > > > > > > > dependencies)
> > > > > > > > > ?
> > > > > > > > 
> > > > > > > > To me it seems the answer to both is no -
> > > > > > > > 
> > > > > > > > This is the requirement list -
> > > > > > > > 
> > > > > > > > java >= 1.5
> > > > > > > > jpackage-utils
> > > > > > > > rpmlib(CompressedFileNames) <= 3.0.4-1
> > > > > > > > rpmlib(FileDigests) <= 4.6.0-1
> > > > > > > > rpmlib(PayloadFilesHavePrefix) <= 4.0-1
> > > > > > > > rpmlib(PayloadIsXz) <= 5.2-1
> > > > > > > > 
> > > > > > > > 
> > > > > > > > Probably a matter of packaging?
> > > > > > > 
> > > > > > > IIRC, Alon was the one who replied, and the issue was that Jboss
> > > > > > > included
> > > > > > > an
> > > > > > > old version (and we don't have classpath isolation, I guess)
> > > > > > > 
> > > > > > > Greg
> > > > > > > 
> > > > > > 
> > > > > > We would like to avoid maintaining and package components that are
> > > > > > not
> > > > > > provider either by el6 or jboss distribution.
> > > > > > 
> > > > > > But based on other threads, it seems that I am the only one who
> > > > > > remained
> > > > > > trying to push compliance to the old ways, people feel that can
> > > > > > maintain
> > > > > > anything anywhere with no effort.
> > > > > > 
> > > > > > Regards,
> > > > > > Alon
> > > 
> > > Alon, I disagree with your comment (about the "you're the only one" part
> > > :)
> > > )
> > 
> > +1
> > 
> > We have three (four if you include PatternFly) ongoing threads about
> > dependency
> > issues at the moment, and I hope we all realize that Alon is trying to do
> > what's best for our project. I certainly empathize with him. He has a tough
> > role, and there are a lot of us young'uns who want 'shiny new things'
> > brought
> > into the project. I certainly don't have the experience to know about all
> > the
> > long term costs of bringing in dependencies into an enterprise project like
> > this
> > -- but I'm learning :)
> 
> I don't think that motivation to introduce new dependencies is driven by
> desire to have "shiny new things" (we're not kids, right?) - I think that
> motivation is driven by actual needs, backed by potential value that might
> be broght in. For example, better/easier code due to newer version of
> library.
> 
> I agree that we should avoid maintaining packages ourselves as much as we
> can,
> I think that everyone's in agreement with Alon on that.
> 
> > 
> > > As I wrote - I had a strong deja-vu about that the issue was already
> > > brought
> > > up.
> > > Now that you reminded , I don't think you're the only person who feels
> > > this
> > > way.
> > > I would also like to understand more what it means before jumping to
> > > conclusions and upgrading to collections4.
> > > At past I had some issues with another commons project
> > > (commons-configuration) that had different versions upstream and
> > > downstream.
> > 
> > I think collections4 is a nonstarter because it's not packaged for EL,
> > IIUC.
> > 
> > > I am sure the changes include not just
> > > "move to generics" and should carefully be considered.
> > > 
> > > > > > 
> > > > > 
> > > > > If I may clarify, there would be at least two stipulations for
> > > > > introducing
> > > > > collections4.
> > > > > 
> > > > > 1. someone else packages it and maintains it, available in Fedora and
> > > > > EL,
> > > > >    long term. Quality package.
> > > > 
> > > > this is what missing, us maintaining a new package just to have more
> > > > beautiful code is something that can be deferred for now.
> > > > 
> > > > > 2. JBoss has proper classloader isolation so that, even though JBoss
> > > > > uses
> > > > >    collections3, a webapp can use collections4.
> > > > 
> > > > should not be a problem to use both.
> > > > 
> > > > > 
> > > > > I don't know the answer to either question :)
> > > > > 
> > > > > Seems like minimal gain to me, though.
> > > > > 
> > > > > Greg
> > > > > 
> > > > 
> > > 
> > _______________________________________________
> > Devel mailing list
> > Devel at ovirt.org
> > http://lists.ovirt.org/mailman/listinfo/devel
> > 
> 