It would be nice if you filed any issues with Log4j2 about problems with 
migration. It would have been nice to hear about these issues back when v1 
stopped development, but this is the next best time to do so. The Log4j team 
are actively working to fill in any remaining gaps on backward compatibility; 
making new releases of EOL software with numerous implementation errors 
inherent to its architecture seems like going backwards.

—
Matt Sicker

> On Jan 8, 2022, at 13:45, Rohit Yadav <ro...@apache.org> wrote:
> 
> Hi all, 
> 
> I agree and extend support for Andrew's remarks. Apache CloudStack too uses 
> log4j 1.x and our use case is simply a logging library that 1.x just 
> satisfies. The effort to migrate to 2.x is not quick, at least in our initial 
> investigation and a migration may likely require huge effort in testing.
> 
> Assuming this quick upgrade path doesn't exist, and I already read struggles 
> by other projects trying to migrate to 2.x - maintaining 1.x and doing a 
> 1.2.x release makes more sense than investing weeks in migration and testing 
> to 2.x, while maintaining the same artifact IDs. I'm up for volunteering and 
> supporting 1.x maintenance.
> 
> Regards, 
> Rohit Yadav 
> PMC, Apache CloudStack
> 
> On 2021/12/21 21:54:34 Andrew Purtell wrote:
>>> as for the v1 :: COBOL analogy, that’s not a bad comparison. Basically,
>> users who haven’t bothered to upgrade in 10 years will have to end up
>> paying astronomical costs for consultants who can still work on ancient
>> software effectively to help modify their systems.
>> 
>> I have to take some exception to this. If the log4j 2.x configuration files
>> were compatible _enough_ with 1.x then taking this position would be
>> understandable. However, because they are not compatible in the way that
>> users require -- and the backwards compatibility is still marked as
>> 'experimental', even -- it is not great to blame users "who haven't
>> bothered to upgrade in 10 years". Turning this around, why is backwards
>> compatibility still experimental after 10 years? I am involved with several
>> Apache projects where we would love to upgrade from log4j 1 to log4j 2, and
>> have been talking about it for _years_. However, we have not been able to
>> easily do so because we actually care about operational cross-version
>> compatibility for our users. On some of these projects we are still stuck
>> on log4j 1.
>> 
>> I also support continuing releasing for log4j 1.x, and would volunteer some
>> of my time to assist in the effort.
>> 
>> 
>> On Tue, Dec 21, 2021 at 12:34 PM Matt Sicker <boa...@gmail.com> wrote:
>> 
>>> Nobody in the Logging PMC is blocking a release here. What we don’t want
>>> is to falsely advertise that v1 is still under development. We already have
>>> a huge increase in mailing list, PR, and other traffic ever since
>>> Log4Shell, and if we resurrect v1, then it’ll quickly become impossible to
>>> keep up with all the activity given the size of the PMC. If any non-trivial
>>> work is to be done in v1, we’d prefer to see more than one person working
>>> on that, especially if we want to add more PMC members to oversee v1 in the
>>> first place.
>>> 
>>> And as for the v1 :: COBOL analogy, that’s not a bad comparison.
>>> Basically, users who haven’t bothered to upgrade in 10 years will have to
>>> end up paying astronomical costs for consultants who can still work on
>>> ancient software effectively to help modify their systems. Was Maven even
>>> widely used back when v1 was popular? Or were people still using a mix of
>>> make or Ant?
>>> --
>>> Matt Sicker
>>> 
>>>> On Dec 21, 2021, at 07:13, Romain Manni-Bucau <rmannibu...@gmail.com>
>>> wrote:
>>>> 
>>>> Le mar. 21 déc. 2021 à 12:33, Enrico Olivelli <eolive...@gmail.com> a
>>>> écrit :
>>>> 
>>>>> Vladimir,
>>>>> I totally support this proposal.
>>>>> 
>>>>> Which are actually the steps we need to cut a release of log4j 1.x ?
>>>>> - establish an Apache project ?
>>>>> 
>>>> 
>>>> 1. Send a patch to apply on
>>>> http://svn.apache.org/repos/asf/logging/log4j/trunk
>>>> 
>>>> 
>>>>> - do the fix
>>>>> 
>>>> 
>>>> 2. Get it applied
>>>> 
>>>> 
>>>>> - cut a release
>>>>> 
>>>>> Can this be done inside another Apache Project who "adopts" the log4j
>>>>> sources if the Logging Project doesn't want to do it ?
>>>>> 
>>>> 
>>>> The PMC of log4j2 is logging project so it should be done there, if not
>>> the
>>>> project can be forked inside Apache but should change of package until we
>>>> get the perms to reuse the same one which means likely as much work as
>>> just
>>>> getting it done at logging project so hope it is not needed ;).
>>>> 
>>>> 
>>>>> 
>>>>> Enrico
>>>>> 
>>>>> 
>>>>> Il giorno mar 21 dic 2021 alle ore 08:36 Vladimir Sitnikov <
>>>>> sitnikov.vladi...@gmail.com> ha scritto:
>>>>> 
>>>>>>> Just wondering, is it even fulfilling the criteria of incubation?
>>>>>> 
>>>>>> I believe, the world does not need "active development in log4j 1.x"
>>>>>> nowadays.
>>>>>> What everybody needs from log4j 1.x is to fix security issues, fix
>>>>>> outstanding issues (if any),
>>>>>> keep the project buildable (e.g. avoid using outdated build systems),
>>>>> etc.
>>>>>> 
>>>>>>> it doesn't seem that sustainability is proven.
>>>>>> 
>>>>>> The problem is log4j 1.x is like COBOL of logging. There are apps that
>>>>> are
>>>>>> just stuck with log4j 1.x.
>>>>>> The proof of sustainability is that lots of existing apps will never
>>>>>> upgrade to 2.x because 2.x is incompatible.
>>>>>> If the compatibility layer of 2.x would be improved to handle 99.999%
>>> of
>>>>>> apps,
>>>>>> then we could indeed move 1.x to the attic.
>>>>>> 
>>>>>> The Incubator Cookbook says:
>>>>>>> The ASF provides software for the public good,
>>>>>> 
>>>>>> As I described, log4j 2.x is not a direct replacement for log4j 1.x,
>>> and
>>>>>> there are **lots** of applications
>>>>>> that can't easily be upgraded to 2.x due to testing, configuration, and
>>>>>> implementation issues.
>>>>>> 
>>>>>> The current Logging PMC is focused on log4j 2.x only, and they have no
>>>>>> desire to release 1.x
>>>>>> 
>>>>>>> active development but focus only on CVE fixes
>>>>>> 
>>>>>> I would say, the primary goal of resurrecting 1.x is to focus on CVEs,
>>>>> and
>>>>>> keep the project buildable and testable.
>>>>>> However, it might be the case, that certain fixes or features would
>>>>> appear.
>>>>>> 
>>>>>> The sad story is that the industry is using 1.x A LOT, and what Logging
>>>>> PMC
>>>>>> did was
>>>>>> they ignored the community, and they just stopped maintaining 1.x and
>>>>>> focused on an incompatible 2.x
>>>>>> 
>>>>>> Not only do they stop maintaining 1.x, but they also deny others to
>>> pick
>>>>> up
>>>>>> the maintenance task.
>>>>>> 
>>>>>> What I am trying to do now is to pick up that maintenance activity.
>>>>>> 
>>>>>> Vladimir
>>>>>> 
>>>>> 
>>> 
>>> 
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>>> 
>> 
>> -- 
>> Best regards,
>> Andrew
>> 
>> Words like orphans lost among the crosstalk, meaning torn from truth's
>> decrepit hands
>>   - A23, Crosstalk
>> 
> 
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