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From "Michael McCandless (JIRA)" <>
Subject [jira] [Commented] (LUCENE-4221) CheckIndex is overeager for term vector offsets bounds checks
Date Sun, 15 Jul 2012 12:05:34 GMT


Michael McCandless commented on LUCENE-4221:

+1 to disabling the checks (the patch): CheckIndex should never fail just because analyzer
was buggy.

+1 also for that plan to remove bad offsets on merge.
> CheckIndex is overeager for term vector offsets bounds checks
> -------------------------------------------------------------
>                 Key: LUCENE-4221
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Bug
>    Affects Versions: 4.0-ALPHA
>            Reporter: Robert Muir
>             Fix For: 4.0, 5.0
>         Attachments: LUCENE-4221.patch
> In some situations (like running shingles twice), you end out with a case where startOffset
> endOffset.
> We prevent this in IndexWriter for postings offsets, but we never do any validation here
for term vectors (at some point, maybe we should make a plan to address this?)
> Anyway, currently CheckIndex will wrongly fail in this situation, which some of our own
analyzers even do (e.g. LUCENE-3920)...
> This is an overly-eager validation in checkindex (for vectors, we cannot safely do these
assertions as it was/is never enforced by IndexWriter, only for postings offsets).

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