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From "Robert Muir (Commented) (JIRA)" <>
Subject [jira] [Commented] (SOLR-1632) Distributed IDF
Date Sat, 28 Jan 2012 23:36:10 GMT


Robert Muir commented on SOLR-1632:

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

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
limits on how many Terms would be exchanged. Maybe BooleanQuery's max clause count is already
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:
>             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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