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