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https://issues.apache.org/jira/browse/LUCENE-7368?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17114021#comment-17114021
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Adrien Grand commented on LUCENE-7368:
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It looks to me like the problem is in 6.6.6, not 7.7.2. Seeing queryNorm=1
suggests that your custom similarity incompletely implements query
normalization. See for instance what the same explanation looks like with
ClassicSimilarity: the IDF factor of the queryWeight gets cancelled by the
queryNorm, and only fieldWeight retains an IDF factor.
> Remove queryNorm
> ----------------
>
> Key: LUCENE-7368
> URL: https://issues.apache.org/jira/browse/LUCENE-7368
> Project: Lucene - Core
> Issue Type: Sub-task
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Priority: Major
> Fix For: 7.0
>
> Attachments: LUCENE-7368.patch
>
>
> Splitting LUCENE-7347 into smaller tasks.
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