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https://issues.apache.org/jira/browse/LUCENE-5683?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir updated LUCENE-5683:
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Attachment: LUCENE-5683.patch
patch, i removed the double-hashing when pulling norms as well.
> Improve SegmentReader.getXXXDocValues
> -------------------------------------
>
> Key: LUCENE-5683
> URL: https://issues.apache.org/jira/browse/LUCENE-5683
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Shai Erera
> Assignee: Robert Muir
> Attachments: LUCENE-5683.patch
>
>
> Today we do two hash lookups, where in most cases a single one is enough.
> E.g. SR.getNumericDocValues initializes the FieldInfo (first lookup in
> FieldInfos), however if that field was already initialized, we can simply
> check dvFields.get(). This can be improved in all getXXXDocValues as well as
> getDocsWithField.
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