I closed LUCENE-9499, which means we now have no split packages in lucene
(except for test-framework).
Please keep in mind we still don't have any static analysis/validations to
prevent someone from adding another package name conflicts between modules.


2020年11月5日(木) 19:38 Tomoko Uchida <[email protected]>:

> Hi,
> please review LUCENE-9600, this cleans up split packages in "misc" module
> and makes some refactoring on classes in lucene/misc to keep lucene/core
> unchanged.
>
> Tomoko
>
>
> 2020年10月24日(土) 19:25 Tomoko Uchida <[email protected]>:
>
>> Hi,
>> please review LUCENE-9319. This tries to resolve package name conflicts
>> between "sandbox" and "core" modules.
>> Looks like many eyeballs are needed for cleaning up our sandbox.
>>
>> Tomoko
>>
>>
>> 2020年10月18日(日) 0:36 Tomoko Uchida <[email protected]>:
>>
>>> Hi,
>>> please review LUCENE-9318, this refactors backward-codecs module
>>> (packages are renamed).
>>> I'm going to merge it into the master after waiting a week or so if
>>> there is no objection/feedback.
>>>
>>> Tomoko
>>>
>>>
>>> 2020年9月3日(木) 22:35 Tomoko Uchida <[email protected]>:
>>>
>>>> I also opened SOLR-14826 as the placeholder. I'm not fully sure of its
>>>> priority but at least Alexandre expressed an interest in fixing it for
>>>> Solr, thanks.
>>>> If there is someone who wants to take the ownership, please feel free
>>>> to join. I will leave it there until LUCENE-9499 is done anyway.
>>>>
>>>>
>>>>
>>>> 2020年9月3日(木) 0:12 Tomoko Uchida <[email protected]>:
>>>>
>>>>> I opened LUCENE-9499 as the umbrella.
>>>>> I set "Fix version" to 9.0 - means once we make a commit on it, this
>>>>> will be a blocker for release 9.0.0. (I don't think the changes should be
>>>>> delivered across two major releases; all changes have to be out at once in
>>>>> a major release.) If there are any objections or concerns, please leave
>>>>> comments. For now I have no idea about the total volume of changes or
>>>>> technical obstacles that have to be handled.
>>>>>
>>>>> About Solr - do we really need to fix split packages? Solr is a server
>>>>> app, the benefits seem to be smaller than Lucene (a library) for me. I'd
>>>>> like to hear opinions/thoughts from others.
>>>>>
>>>>> Tomoko
>>>>>
>>>>>
>>>>> 2020年9月2日(水) 9:05 Gus Heck <[email protected]>:
>>>>>
>>>>>> +1 to fixing and +1 to doing it in a major release.
>>>>>>
>>>>>> On Tue, Sep 1, 2020 at 4:32 PM Adrien Grand <[email protected]>
>>>>>> wrote:
>>>>>>
>>>>>>> +1 Changing packages of many classes should be done in a major.
>>>>>>>
>>>>>>> On Tue, Sep 1, 2020 at 5:50 PM Tomoko Uchida <
>>>>>>> [email protected]> wrote:
>>>>>>>
>>>>>>>> Just to make sure, could I confirm "when the changes will be
>>>>>>>> out"...
>>>>>>>> Resolving split package issues should break backward compatibility
>>>>>>>> (changing package names and moving classes from one module to another
>>>>>>>> modules). So we have just two options, we can have these changes only 
>>>>>>>> on
>>>>>>>> major releases - 9.0.0 or 10.0.0; we cannot release such changes at 
>>>>>>>> minor
>>>>>>>> versions. Is that correct?
>>>>>>>>
>>>>>>>> Tomoko
>>>>>>>>
>>>>>>>>
>>>>>>>> 2020年9月1日(火) 22:08 Tomoko Uchida <[email protected]>:
>>>>>>>>
>>>>>>>>> > As I recall one issue was around where to put analysis packages?
>>>>>>>>>
>>>>>>>>> It's LUCENE-9317. I had worked on it before, you can see what
>>>>>>>>> changes will be needed for analyzers-common (and core).
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> 2020年9月1日(火) 22:00 Michael Sokolov <[email protected]>:
>>>>>>>>>
>>>>>>>>>> I'm in favor - there may be some difficult choices though. As I
>>>>>>>>>> recall
>>>>>>>>>> one issue was around where to put analysis packages? I forget the
>>>>>>>>>> details, but there was some pretty strong feeling that you should
>>>>>>>>>> have
>>>>>>>>>> a functioning system with core only. However some basic analysis
>>>>>>>>>> tools
>>>>>>>>>> are required for that, while most of our analyzers and so on are
>>>>>>>>>> in a
>>>>>>>>>> separate analysis module. Perhaps we will need to move some basic
>>>>>>>>>> analyzers out of com.amazon.lucene.analysis? Or the reverse -
>>>>>>>>>> move all
>>>>>>>>>> the analysis code into the analysis module and acknowledge that
>>>>>>>>>> it is
>>>>>>>>>> a fundamental dependency (more essential than core, really).
>>>>>>>>>>
>>>>>>>>>> On Tue, Sep 1, 2020 at 8:26 AM Tomoko Uchida
>>>>>>>>>> <[email protected]> wrote:
>>>>>>>>>> >
>>>>>>>>>> > yes, Jigsaw was on my mind too...
>>>>>>>>>> >
>>>>>>>>>> > > why not go ahead and try to clean it up right away?
>>>>>>>>>> >
>>>>>>>>>> > > So a strong +1 to clean this up!
>>>>>>>>>> >
>>>>>>>>>> > OK, maybe I should open two issues, one for Lucene and one for
>>>>>>>>>> Solr, and link existing wip issues to them.
>>>>>>>>>> > Once we start it, these will be blockers for 9.0.0 release I
>>>>>>>>>> believe (for now I have no idea about the volume of the changes or
>>>>>>>>>> technical obstacles). Are there any objections or comments?
>>>>>>>>>> >
>>>>>>>>>> >
>>>>>>>>>> > 2020年9月1日(火) 19:34 Uwe Schindler <[email protected]>:
>>>>>>>>>> >>
>>>>>>>>>> >> Hi,
>>>>>>>>>> >>
>>>>>>>>>> >> The biggest issue is that split packages make migrating to the
>>>>>>>>>> Java 9 module system impossible. It's not allowed to have same 
>>>>>>>>>> package name
>>>>>>>>>> (with classes) in different JAR files.
>>>>>>>>>> >>
>>>>>>>>>> >> Some of those require to open up visibility of classes. Some
>>>>>>>>>> split packages issues were done because of package private access, 
>>>>>>>>>> which is
>>>>>>>>>> very bad between JAR files. This also affects the test framework, 
>>>>>>>>>> although
>>>>>>>>>> this is not such a big deal (I would exclude that for now), because 
>>>>>>>>>> you
>>>>>>>>>> would never run UNIT tests inside a module system, only integration 
>>>>>>>>>> tests.
>>>>>>>>>> >>
>>>>>>>>>> >> So a strong +1 to clean this up!
>>>>>>>>>> >> Uwe
>>>>>>>>>> >>
>>>>>>>>>> >> -----
>>>>>>>>>> >> Uwe Schindler
>>>>>>>>>> >> Achterdiek 19, D-28357 Bremen
>>>>>>>>>> >> https://www.thetaphi.de
>>>>>>>>>> >> eMail: [email protected]
>>>>>>>>>> >>
>>>>>>>>>> >> > -----Original Message-----
>>>>>>>>>> >> > From: Dawid Weiss <[email protected]>
>>>>>>>>>> >> > Sent: Tuesday, September 1, 2020 9:22 AM
>>>>>>>>>> >> > To: Lucene Dev <[email protected]>
>>>>>>>>>> >> > Subject: Re: Approach towards solving split package issues?
>>>>>>>>>> >> >
>>>>>>>>>> >> > This is a big headache for many things. I wouldn't mind
>>>>>>>>>> doing this
>>>>>>>>>> >> > even for 9x. This is a major release, why not go ahead and
>>>>>>>>>> try to
>>>>>>>>>> >> > clean it up right away?
>>>>>>>>>> >> >
>>>>>>>>>> >> > Dawid
>>>>>>>>>> >> >
>>>>>>>>>> >> > On Mon, Aug 31, 2020 at 11:50 PM Tomoko Uchida
>>>>>>>>>> >> > <[email protected]> wrote:
>>>>>>>>>> >> > >
>>>>>>>>>> >> > > Hello devs,
>>>>>>>>>> >> > >
>>>>>>>>>> >> > > we have lots of package name conflicts (shared package
>>>>>>>>>> names) between
>>>>>>>>>> >> > modules in the Lucene/Solr source tree. It is not only
>>>>>>>>>> annoying for devs/users
>>>>>>>>>> >> > but also indeed bad practice since Java 9 (according to my
>>>>>>>>>> understanding), and
>>>>>>>>>> >> > we already have some problems with Javadocs due to these
>>>>>>>>>> splitted packages
>>>>>>>>>> >> > as some of us would know. I'm curious about the issue from a
>>>>>>>>>> while ago. My
>>>>>>>>>> >> > questions are, Q1: How can we solve the issue in an
>>>>>>>>>> organized way? Q2: How
>>>>>>>>>> >> > many of us really have interests about that?
>>>>>>>>>> >> > >
>>>>>>>>>> >> > > To break down Q1,
>>>>>>>>>> >> > > - A JIRA for building a grand design and organizing sub
>>>>>>>>>> tasks is needed? We
>>>>>>>>>> >> > have a couple of issues (e.g. LUCENE-9317 and LUCENE-9319)
>>>>>>>>>> about it and I
>>>>>>>>>> >> > had been playing around them before; but I feel like an
>>>>>>>>>> umbrella ticket would
>>>>>>>>>> >> > be needed.
>>>>>>>>>> >> > > - When to start and what's the target version to be out?
>>>>>>>>>> My feeling is that
>>>>>>>>>> >> > after cutting branch_9x is the right moment to start and
>>>>>>>>>> 10.0.0 is suitable for
>>>>>>>>>> >> > the target, does this make sense?
>>>>>>>>>> >> > > - Are there any other tasks/concerns to be considered
>>>>>>>>>> except for just
>>>>>>>>>> >> > renaming packages?
>>>>>>>>>> >> > >
>>>>>>>>>> >> > > Regarding Q2,
>>>>>>>>>> >> > > I know some of us have deep knowledge and thoughts in this
>>>>>>>>>> topic, but for
>>>>>>>>>> >> > now I am not sure how many of you have the will to give help
>>>>>>>>>> or take time for
>>>>>>>>>> >> > that.
>>>>>>>>>> >> > > It can't be a one-man effort. The more people understand
>>>>>>>>>> and can contribute
>>>>>>>>>> >> > to the build, the more healthy it will be. (I borrowed this
>>>>>>>>>> phrase from Gradle
>>>>>>>>>> >> > build issue LUCENE-9077).
>>>>>>>>>> >> > >
>>>>>>>>>> >> > > I don't intend to rush into making a decision, my purpose
>>>>>>>>>> here is to collect
>>>>>>>>>> >> > information to see if I can handle it before opening a JIRA.
>>>>>>>>>> >> > >
>>>>>>>>>> >> > > Thanks,
>>>>>>>>>> >> > > Tomoko
>>>>>>>>>> >> >
>>>>>>>>>> >> >
>>>>>>>>>> ---------------------------------------------------------------------
>>>>>>>>>> >> > To unsubscribe, e-mail: [email protected]
>>>>>>>>>> >> > For additional commands, e-mail: [email protected]
>>>>>>>>>> >>
>>>>>>>>>> >>
>>>>>>>>>> >>
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>>>>>>>>>> >> For additional commands, e-mail: [email protected]
>>>>>>>>>> >>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> ---------------------------------------------------------------------
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>>>>>>>>>> For additional commands, e-mail: [email protected]
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Adrien
>>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> http://www.needhamsoftware.com (work)
>>>>>> http://www.the111shift.com (play)
>>>>>>
>>>>>

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