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https://issues.apache.org/jira/browse/LUCENE-4694?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13556250#comment-13556250
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Adrien Grand commented on LUCENE-4694:
--------------------------------------

I think there is a similar problem with doc values vs. stored fields? The API 
makes fetching all values of a specific field easy with stored fields and hard 
with doc values.
                
> Add back IndexReader.fields() -> Multi*, or discourage term vectors in some 
> better way
> --------------------------------------------------------------------------------------
>
>                 Key: LUCENE-4694
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4694
>             Project: Lucene - Core
>          Issue Type: Bug
>            Reporter: Robert Muir
>
> Users can easily get term vectors from any indexreader, but not postings 
> lists. this encourages them to do really slow things: like pulling term 
> vectors for every single document.
> this is really really so much worse than going through multifields or 
> whatever. 

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