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Posted to dev@lucene.apache.org by "Mikhail Khludnev (JIRA)" <ji...@apache.org> on 2017/08/20 19:58:01 UTC
[jira] [Updated] (LUCENE-7863) Don't repeat postings (and perhaps
positions) on ReverseWF, EdgeNGram, etc
[ https://issues.apache.org/jira/browse/LUCENE-7863?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mikhail Khludnev updated LUCENE-7863:
-------------------------------------
Attachment: LUCENE-7863.patch
WIP [^LUCENE-7863.patch]
It introduces a codec with two posting formats:
# hijacking PF which stores posting offsets for original terms
# injecting PF which reverses terms and supplies offset to the original terms postings (here is the only file format is changed - it's written with Zlong since these offset deltas are negative)
It has to break into any private and final members that blow up the patch.
> Don't repeat postings (and perhaps 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, LUCENE-7863.patch
>
>
> 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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