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From DM Smith <>
Subject Re: [VOTE] Migrate Lucene to JDK 1.5 for 3.0 release
Date Mon, 30 Jul 2007 12:18:32 GMT
+1 from me, too. Not because I have a vote or that I am for going to  
1.5, but because it is inevitable and this is a well thought out,  
fine plan. (excepting the aggressive timeline that has been hashed  
out already in this thread)

I'd like to point out that there is a consequence of this plan and  
how Lucene has done things in the past.

At 1.9 it was fully compatible with 1.4.3, with deprecations. 2.0  
mostly had deprecations removed and a few bug fixes. Then the 2.x  
series has been backwardly compatible but not with 1.x (except being  
able to read prior indexes, perhaps a few other things.).

If we continue that same pattern, then there will be no 1.5 features  
in 2.9. (Otherwise it won't compile under 1.4). Thus, 3.0 will have a  
1.4.2 compatible interface. And except for new classes, new methods  
and compile equivalent features (such as Enums), 1.5 features won't  
appear in the 3.x series API.

I think it is very important to preserve the Lucene API where  
possible and reasonable, not changing it without gain. Given that  
this has been the practice, I don't think it is an issue.

-- DM Smith

On Jul 26, 2007, at 8:36 PM, Grant Ingersoll wrote:

> I  propose we take the following path for migrating Lucene Java to  
> JDK 1.5:
> 1.  Put in any new deprecations we want, cleanups, etc.
> 2. Release 2.4 so all of Mike M's goodness is available to 1.4  
> users within the next 2-4 weeks using our new release mechanism  
> (i.e code freeze, branch, documentation.  I tentatively volunteer  
> to be the RM, but hope someone will be my wingman on it).
> 3. Announce that 2.9 will be the last version under JDK 1.4
> 4. Put in any other deprecations that we want and do as we did when  
> moving from 1.4.3 to 1.9 by laying out a migration plan, etc.
> 5. Release 2.9 as the last official release on JDK 1.4
> 6. Switch 3.0-dev to be on JDK 1.5, removing any deprecated code  
> and updating ANT to use 1.5 for source and target.
> 7. Start accepting JDK 1.5 patches on 3.0-dev
> If possible, efforts should be made to identify people who are  
> willing to backport 3.x changes to JDK 1.4 on 2.9 and give them  
> branch commit rights, but this is not a strict requirement of this  
> plan.
> Thus:
> +1 for JDK 1.5 as outlined in steps 1-7
> 0 if you don't care
> -1 if you are against it
> Since the weekend is coming up, how about we leave this vote open  
> until Monday?
> You can see discussions of this here: http://www.gossamer- 
> Here is my +1.
> Cheers,
> Grant
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