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From "Andrzej Bialecki (JIRA)" <>
Subject [jira] Commented: (SOLR-1632) Distributed IDF
Date Fri, 11 Dec 2009 08:45:18 GMT


Andrzej Bialecki  commented on SOLR-1632:

I'm not sure what approach you are referring to. Following the terminology in that thread,
this implementation follows the approach where there is a single merged big idf map at the
master, and it's sent out to slaves on each query. However, when exactly this merging and
sending happens is implementation-specific - in the ExactDFSource it happens on every query,
but I hope the API can support other scenarios as well.

> Distributed IDF
> ---------------
>                 Key: SOLR-1632
>                 URL:
>             Project: Solr
>          Issue Type: New Feature
>          Components: search
>    Affects Versions: 1.5
>            Reporter: Andrzej Bialecki 
>         Attachments: 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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