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https://issues.apache.org/jira/browse/LUCENE-7863?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16054679#comment-16054679
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Mikhail Khludnev commented on LUCENE-7863:
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[~dsmiley], thanks for breaking silence.
It gives six docs
||name||name_rev||
|foo|oof|
|foo|oof|
|foo|oof|
|bar|rab|
|bar|rab|
|bar|rab|
the term dictionary is
||field/term||posting offset (relative)||
||name|| ||
|bar|0|
|foo|3|
||name_rev|| ||
|oof|3|
|rab|3|
||Postings (absolute values)||
|3,4,5|
|0,1,2|
|0,1,2|
|3,4,5|
Thus, we still see 12 postings, that's duplication, which I want to avoid. Or
you propose to have an auxiliary docs like foo->oof?
> Don't repeat postings and positions on ReverseWF, EdgeNGram, etc
> ------------------------------------------------------------------
>
> Key: LUCENE-7863
> URL: https://issues.apache.org/jira/browse/LUCENE-7863
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/index
> Reporter: Mikhail Khludnev
> Attachments: LUCENE-7863.hazard
>
>
> h2. Context
> \*suffix and \*infix\* searches on large indexes.
> h2. Problem
> Obviously applying {{ReversedWildcardFilter}} doubles an index size, and I'm
> shuddering to think about EdgeNGrams...
> h2. Proposal
> _DRY_
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