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https://issues.apache.org/jira/browse/SOLR-1632?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13195644#comment-13195644
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Robert Muir commented on SOLR-1632:
-----------------------------------

{quote}
But back to the original question - I still see no reason to 
request/return/cache terms/stats from these multi-term queries when by 
definition they should not change the results of the request.
{quote}

My original point (forgetting about the specifics of MTQ, how things are being 
scored, or anything) is still that its a general case of Query that can have 
lots of Terms.

So if there are concerns about "lots of terms", I still think its worth 
considering having some 
limits on how many Terms would be exchanged. Maybe BooleanQuery's max clause 
count is already good
enough, but another way to do it would be to have an approximate implementation 
that approximates 
when the term count for a query gets too high.

                
> Distributed IDF
> ---------------
>
>                 Key: SOLR-1632
>                 URL: https://issues.apache.org/jira/browse/SOLR-1632
>             Project: Solr
>          Issue Type: New Feature
>          Components: search
>    Affects Versions: 1.5
>            Reporter: Andrzej Bialecki 
>         Attachments: 3x_SOLR-1632_doesntwork.patch, SOLR-1632.patch, 
> SOLR-1632.patch, SOLR-1632.patch, distrib-2.patch, distrib.patch
>
>
> Distributed IDF is a valuable enhancement for distributed search across 
> non-uniform shards. This issue tracks the proposed implementation of an API 
> to support this functionality in Solr.

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