great, more constructive feedback :-) Thanks Jason Both projects are well known and widely used even if log4j v2 is younger with less downloads such figures are not really representative with all caches/repositories managers I think.
About logback vs log4j I have really no real preference technically speaking (I had both branches working in the past and used them a lot in my professional life - http://www.aheritier.net/united-colors-of-maven/). In term of community, Log4J is in our apache community and we have few active committers arround. On Logback side even if I really appreciate Ceki I'm always afraid about this one-man show project. (and Ceki isn't perfect too when we see the nightmare of slf4j-api 1.5+ incompatibilities we always have in 2016 !!). I agree that we are just talking about a logging implementation but you saw what it gave for eclipse/aether .... I'm clearly not enough involved enough in the project to try to convince anyone about a choice to do but I can just say that not having a colorized console in 2016 is .... irritating. For the problem reported by Gary I think that applying the fix in maven-embedder/src/main/resources/META-INF/maven/slf4j-configuration.properties ( https://github.com/apache/maven/commit/8cddea291c279130d437bcdf3337f16296558530 ) is safe to be back-ported in master. It is just that org.slf4j.helpers.Log4jLoggerFactorywas for Log4J 1 AFAIU and now that Log4J2 is release/stabilized there is a new one : org.apache.logging.slf4j.Log4jLoggerFactory For the replacement of the implementation and activate colors I prefer to let active committers decide of what they are doing (I imagine that for any choice they are doing it doesn't avoid you to use another one in your own distribution ? I would prefer log4j2 but clearly I never merged it because of the slf4j conflict that I don't understand (but I didn't spend a lot of time on it) Cheers On Wed, Jan 6, 2016 at 5:46 PM, Jason van Zyl <ja...@takari.io> wrote: > These are the numbers I arrived at, happy to run them with different > coordinates but thought these were representative: > > gremlin> g.V('vc', 'log4j:log4j').inE.count() > ==>84570 > > gremlin> g.V('vc', 'ch.qos.logback:logback-classic').inE.count() > ==>62389 > > gremlin> g.V('vc', 'org.apache.logging.log4j:log4j-core').inE.count() > ==>3134 > > These are incoming edges across all versions of said coordinate. > > > On Jan 6, 2016, at 11:15 AM, Jason van Zyl <ja...@takari.io> wrote: > > > > As we said previously when the the question arose again there would be a > discussion. You may not remember, but I expect there to be a discussion. > > > > I have built a graph of Maven Central to analyze the rank (count of all > incoming edges) for Log4J2 and Logback and it is clear from those numbers > that everyone has gone from Log4J to Logback. What has happened, I believe > from the numbers, is that the community followed the founder of the project > and not the owner project in pretty much the exact same way users went with > Jenkins and not Hudson. Anyone is happy to take the graph and verify this > themselves, or generate their own data from the machine that is housing the > copy of Maven Central at Google. > > > > Additionally Igor has an implementation for logging during concurrent > builds based on Logback that I would really like to use, and the color > logging is also easy with Logback. I do not want to use something that the > community at large has not adopted. > > > > Again, anyone is welcome to the code and/or the data if they want to > verify this themselves. > > > > I also am not interested in a debate so if we disagree then just leave > the simple implementation in place. I’m not philosophically motivated much > here in these discussions but I’m vehemently opposed to integrating Log4J2. > > > >> On Jan 6, 2016, at 7:55 AM, Arnaud Héritier <aherit...@gmail.com> > wrote: > >> > >> thanks for this valuable comment Jason :( > >> > >> On Wed, Jan 6, 2016 at 1:46 PM, Jason van Zyl <ja...@takari.io> wrote: > >> > >>> -1 > >>> > >>> Do not merge this branch. > >>> > >>>> On Jan 6, 2016, at 4:05 AM, Tibor Digana <tibordig...@apache.org> > wrote: > >>>> > >>>> Hi Arnaud, > >>>> Do you plan a Release Version to merge this branch o master in Maven? > >>>> > >>>> On Tue, Jan 5, 2016 at 7:18 AM, Arnaud Héritier [via Maven] < > >>>> ml-node+s40175n5857870...@n5.nabble.com> wrote: > >>>> > >>>>> Just because only 2.4 was available when I updated this feature > branch > >>> few > >>>>> months ago. > >>>>> > >>>>> Le mardi 5 janvier 2016, Gary Gregory <[hidden email] > >>>>> <http:///user/SendEmail.jtp?type=node&node=5857870&i=0>> a écrit : > >>>>> > >>>>>> Hi Arnaud, > >>>>>> > >>>>>> Thank you for the update. > >>>>>> > >>>>>> Why not update the Log4j 2 dep from 2.4 to 2.5? > >>>>>> > >>>>>> Gary > >>>>>> > >>>>>> On Mon, Jan 4, 2016 at 2:46 PM, Arnaud Héritier <[hidden email] > >>>>> <http:///user/SendEmail.jtp?type=node&node=5857870&i=1> > >>>>>> <javascript:;>> wrote: > >>>>>> > >>>>>>> Hi Gary, > >>>>>>> > >>>>>>> I fixed this in the branch : > >>>>>>> https://github.com/apache/maven/commits/slf4j-log4j2.4 > >>>>>>> The fix is in > >>>>>>> > >>>>>>> > >>>>>> > >>>>> > >>> > maven-embedder/src/main/resources/META-INF/maven/slf4j-configuration.properties > >>>>> > >>>>>>> ( > >>>>>>> > >>>>>>> > >>>>>> > >>>>> > >>> > https://github.com/apache/maven/commit/8cddea291c279130d437bcdf3337f16296558530 > >>>>>>> ) > >>>>>>> It is the update I did after my old blog post : > >>>>>>> http://www.aheritier.net/united-colors-of-maven/ > >>>>>>> > >>>>>>> BR > >>>>>>> > >>>>>>> On Fri, Dec 25, 2015 at 4:09 PM, Gary Gregory <[hidden email] > >>>>> <http:///user/SendEmail.jtp?type=node&node=5857870&i=2> > >>>>>> <javascript:;>> > >>>>>>> wrote: > >>>>>>> > >>>>>>>> Hi All, > >>>>>>>> > >>>>>>>> Happy Holidays. > >>>>>>>> > >>>>>>>> Can the next version of Maven be rid of this warning: > >>>>>>>> > >>>>>>>> [WARN] The SLF4J binding actually used is not supported by Maven: > >>>>>>>> org.apache.logging.slf4j.Log4jLoggerFactory > >>>>>>>> [WARN] Maven supported bindings are: > >>>>>>>> [WARN] (from > >>>>>>>> > >>>>>>>> > >>>>>>> > >>>>>> > >>>>> > >>> > jar:file:/E:/Java/apache-maven-3.3.9/bin/../lib/maven-embedder-3.3.9.jar!/META-INF/maven/slf4j-configuration.properties) > >>>>> > >>>>>>>> - ch.qos.logback.classic.LoggerContext > >>>>>>>> - org.slf4j.helpers.Log4jLoggerFactory > >>>>>>>> - org.slf4j.impl.SimpleLoggerFactory > >>>>>>>> > >>>>>>>> Is there a step I am missing to use Log4j 2 cleanly? My steps are > >>>>> here: > >>>>>>>> > https://garygregory.wordpress.com/2015/03/23/watch-maven-in-color/ > >>>>>>>> > >>>>>>>> -- > >>>>>>>> E-Mail: [hidden email] > >>>>> <http:///user/SendEmail.jtp?type=node&node=5857870&i=3> > <javascript:;> > >>> | [hidden > >>>>> email] <http:///user/SendEmail.jtp?type=node&node=5857870&i=4> > >>>>>> <javascript:;> > >>>>>>>> Java Persistence with Hibernate, Second Edition > >>>>>>>> <http://www.manning.com/bauer3/> > >>>>>>>> JUnit in Action, Second Edition <http://www.manning.com/tahchiev/ > > > >>>>>>>> Spring Batch in Action <http://www.manning.com/templier/> > >>>>>>>> Blog: http://garygregory.wordpress.com > >>>>>>>> Home: http://garygregory.com/ > >>>>>>>> Tweet! http://twitter.com/GaryGregory > >>>>>>>> > >>>>>>> > >>>>>>> > >>>>>>> > >>>>>>> -- > >>>>>>> ----- > >>>>>>> Arnaud Héritier > >>>>>>> http://aheritier.net > >>>>>>> Mail/GTalk: aheritier AT gmail DOT com > >>>>>>> Twitter/Skype : aheritier > >>>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> -- > >>>>>> E-Mail: [hidden email] > >>>>> <http:///user/SendEmail.jtp?type=node&node=5857870&i=5> > <javascript:;> > >>> | [hidden > >>>>> email] <http:///user/SendEmail.jtp?type=node&node=5857870&i=6> > >>>>>> <javascript:;> > >>>>>> Java Persistence with Hibernate, Second Edition > >>>>>> <http://www.manning.com/bauer3/> > >>>>>> JUnit in Action, Second Edition <http://www.manning.com/tahchiev/> > >>>>>> Spring Batch in Action <http://www.manning.com/templier/> > >>>>>> Blog: http://garygregory.wordpress.com > >>>>>> Home: http://garygregory.com/ > >>>>>> Tweet! http://twitter.com/GaryGregory > >>>>>> > >>>>> > >>>>> > >>>>> -- > >>>>> ----- > >>>>> Arnaud Héritier > >>>>> http://aheritier.net > >>>>> Mail/GTalk: aheritier AT gmail DOT com > >>>>> Twitter/Skype : aheritier > >>>>> > >>>>> > >>>>> ------------------------------ > >>>>> If you reply to this email, your message will be added to the > discussion > >>>>> below: > >>>>> > http://maven.40175.n5.nabble.com/Log4j-Warning-tp5856237p5857870.html > >>>>> To start a new topic under Maven Developers, email > >>>>> ml-node+s40175n142166...@n5.nabble.com > >>>>> To unsubscribe from Maven Developers, click here > >>>>> < > >>> > http://maven.40175.n5.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=142166&code=dGlib3JkaWdhbmFAYXBhY2hlLm9yZ3wxNDIxNjZ8LTI4OTQ5MjEwMg== > >>>> > >>>>> . > >>>>> NAML > >>>>> < > >>> > http://maven.40175.n5.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml > >>>> > >>>>> > >>>> > >>>> > >>>> > >>>> > >>>> -- > >>>> View this message in context: > >>> http://maven.40175.n5.nabble.com/Log4j-Warning-tp5856237p5857942.html > >>>> Sent from the Maven Developers mailing list archive at Nabble.com. > >>> > >>> Thanks, > >>> > >>> Jason > >>> > >>> ---------------------------------------------------------- > >>> Jason van Zyl > >>> Founder, Takari and Apache Maven > >>> http://twitter.com/jvanzyl > >>> http://twitter.com/takari_io > >>> --------------------------------------------------------- > >>> > >>> {script:nopre:"/Users/jvanzyl/signature/signature.sh"} > >>> > >>> > >>> --------------------------------------------------------------------- > >>> To unsubscribe, e-mail: dev-unsubscr...@maven.apache.org > >>> For additional commands, e-mail: dev-h...@maven.apache.org > >>> > >>> > >> > >> > >> -- > >> ----- > >> Arnaud Héritier > >> http://aheritier.net > >> Mail/GTalk: aheritier AT gmail DOT com > >> Twitter/Skype : aheritier > > > > Thanks, > > > > Jason > > > > ---------------------------------------------------------- > > Jason van Zyl > > Founder, Takari and Apache Maven > > http://twitter.com/jvanzyl > > http://twitter.com/takari_io > > --------------------------------------------------------- > > > > {script:nopre:"/Users/jvanzyl/signature/signature.sh"} > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: dev-unsubscr...@maven.apache.org > > For additional commands, e-mail: dev-h...@maven.apache.org > > > > Thanks, > > Jason > > ---------------------------------------------------------- > Jason van Zyl > Founder, Takari and Apache Maven > http://twitter.com/jvanzyl > http://twitter.com/takari_io > --------------------------------------------------------- > > {script:nopre:"/Users/jvanzyl/signature/signature.sh"} > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: dev-unsubscr...@maven.apache.org > For additional commands, e-mail: dev-h...@maven.apache.org > > -- ----- Arnaud Héritier http://aheritier.net Mail/GTalk: aheritier AT gmail DOT com Twitter/Skype : aheritier
