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Posted to dev@lucene.apache.org by "Uwe Schindler (JIRA)" <ji...@apache.org> on 2010/07/18 14:35:50 UTC

[jira] Reopened: (LUCENE-2480) Remove support for pre-3.0 indexes

     [ https://issues.apache.org/jira/browse/LUCENE-2480?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Uwe Schindler reopened LUCENE-2480:
-----------------------------------


I reopen this issue, as the following problem is there:
When somebody tries to open an pre-3.0 index, it should fail with a meaningful exception. At least e.g. FieldsReader (where I found dead code after your removal) does not check that the version is ge the minimum version. We should add a static FORMAT_MINIMUM to all places where formats are used and check it on reading.

> Remove support for pre-3.0 indexes
> ----------------------------------
>
>                 Key: LUCENE-2480
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2480
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Index
>            Reporter: Shai Erera
>            Assignee: Shai Erera
>            Priority: Minor
>             Fix For: 4.0
>
>         Attachments: LUCENE-2480.patch, LUCENE-2480.patch, LUCENE-2480.patch, LUCENE-2480.patch
>
>
> We should remove support for 2.x (and 1.9) indexes in 4.0. It seems that nothing can be done in 3x because there is no special code which handles 1.9, so we'll leave it there. This issue should cover:
> # Remove the .zip indexes
> # Remove the unnecessary code from SegmentInfo and SegmentInfos. Mike suggests we compare the version headers at the top of SegmentInfos, in 2.9.x vs 3.0.x, to see which ones can go.
> # remove FORMAT_PRE from FieldInfos
> # Remove old format from TermVectorsReader
> If you know of other places where code can be removed, then please post a comment here.
> I don't know when I'll have time to handle it, definitely not in the next few days. So if someone wants to take a stab at it, be my guest.

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