Hi devs,
I updated the KIP with the migration plan I discussed with Ismael.
I think 2.7.0 is the perfect time for starting migration into log4j2. If we
miss this opportunity, the migration would be much harder. So please have a
look at this proposal.
I also opened a voting thread for this.
Thanks,
Dongjin
On Thu, Sep 17, 2020 at 2:29 AM Dongjin Lee <dong...@apache.org> wrote:
> Hi Ismael,
>
> > Have we considered switching to the log4j2 logging config format by
> default and providing a mechanism to use the old format?
>
> As of present, the proposal leaves the default config format switching to
> sometime in the future. However, I think it is not a difficult task and is
> up to the community's decision. The draft implementation already includes
> log4j2 counterparts for all existing 1.x format (template) configs.
> Although it still uses traditional log4j format as a default for backward
> compatibility, the users who prefer the log4j2 configs can use it by
> setting `export
> KAFKA_LOG4J_OPTS="-Dlog4j.configurationFile={log4j2-config-file-path}"`.
> Whenever we change the default logging format, we must don't forget to
> switch this functionality to the reverse, i.e., making log4j 1.x format
> available as an opt-in.
>
> I am so concerned about the community's opinion when would be adequate to
> make the log4j2 config as default.
>
> Thanks,
> Dongjin
>
> +1. As a note, I have an almost-completed implementation of log4j2
> equivalent for the log4j-appender. I think it would be great if this
> feature can be provided with changing the default logging config format.
>
> On Wed, Sep 16, 2020 at 11:49 PM Ismael Juma <ism...@juma.me.uk> wrote:
>
>> Thanks for the KIP, Dongjin. Have we considered switching to the log4j2
>> logging config format by default and providing a mechanism to use the old
>> format? It is likely that we will release 3.0 as the release after 2.7, so
>> it would provide a good opportunity to move on from the legacy config
>> format. The other option is to stick with the old format for 3.0 and
>> migrate to the new format in 4.0.
>>
>> Ismael
>>
>> On Wed, Aug 5, 2020 at 7:45 AM Dongjin Lee <dong...@apache.org> wrote:
>>
>> > Hi, Kafka dev,
>> >
>> > I hope to initiate the discussion of KIP-653, upgrading log4j to log4j2.
>> >
>> >
>> >
>> https://cwiki.apache.org/confluence/display/KAFKA/KIP-653%3A+Upgrade+log4j+to+log4j2
>> >
>> > All kinds of feedbacks are greatly appreciated!
>> >
>> > Best,
>> > Dongjin
>> >
>> > --
>> > *Dongjin Lee*
>> >
>> > *A hitchhiker in the mathematical world.*
>> >
>> >
>> >
>> >
>> > *github: <http://goog_969573159/>github.com/dongjinleekr
>> > <https://github.com/dongjinleekr>keybase:
>> https://keybase.io/dongjinleekr
>> > <https://keybase.io/dongjinleekr>linkedin:
>> kr.linkedin.com/in/dongjinleekr
>> > <https://kr.linkedin.com/in/dongjinleekr>speakerdeck:
>> > speakerdeck.com/dongjin
>> > <https://speakerdeck.com/dongjin>*
>> >
>>
>
>
> --
> *Dongjin Lee*
>
> *A hitchhiker in the mathematical world.*
>
>
>
>
> *github: <http://goog_969573159/>github.com/dongjinleekr
> <https://github.com/dongjinleekr>keybase: https://keybase.io/dongjinleekr
> <https://keybase.io/dongjinleekr>linkedin: kr.linkedin.com/in/dongjinleekr
> <https://kr.linkedin.com/in/dongjinleekr>speakerdeck: speakerdeck.com/dongjin
> <https://speakerdeck.com/dongjin>*
>
--
*Dongjin Lee*
*A hitchhiker in the mathematical world.*
*github: <http://goog_969573159/>github.com/dongjinleekr
<https://github.com/dongjinleekr>keybase: https://keybase.io/dongjinleekr
<https://keybase.io/dongjinleekr>linkedin: kr.linkedin.com/in/dongjinleekr
<https://kr.linkedin.com/in/dongjinleekr>speakerdeck: speakerdeck.com/dongjin
<https://speakerdeck.com/dongjin>*
