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https://issues.apache.org/jira/browse/LUCENE-3638?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13167121#comment-13167121
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Uwe Schindler commented on LUCENE-3638:
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I think the issue is more about something else:
bq. when generating digest for some documents with huge fields, it should be
unnecessary to load the field but just interesting part of the field with the
offset information. but indexreader always return the whole field content.
afterward, the customized storedfieldsreader will got a repeated loading
He wants to specify an offset/length into a very large field and only retrieve
the subslice.
> IndexReader.document always return a doc with all the stored fields loaded.
> And this can be slow for the indexed document contain huge fields
> ---------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: LUCENE-3638
> URL: https://issues.apache.org/jira/browse/LUCENE-3638
> Project: Lucene - Java
> Issue Type: Improvement
> Components: core/index, core/search
> Affects Versions: 4.0
> Environment: 64bit linux java 1.6
> Reporter: peter chang
> Priority: Minor
> Labels: patch
> Fix For: 4.0
>
> Attachments: doc.fields.patch
>
>
> when generating digest for some documents with huge fields, it should be
> unnecessary to load the field but just interesting part of the field with the
> offset information. but indexreader always return the whole field content.
> afterward, the customized storedfieldsreader will got a repeated loading
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