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From "Otis Gospodnetic (JIRA)" <>
Subject [jira] Commented: (SOLR-1537) Dedupe Sharded Search Results by Shard Order or Score
Date Thu, 05 Nov 2009 20:03:32 GMT


Otis Gospodnetic commented on SOLR-1537:

The "ID" here being the uniqueKey?  i.e. the use case is the removal of dupes when the same
document is indexed in multiple shards and more than 1 shard return that document in the result

> Dedupe Sharded Search Results by Shard Order or Score
> -----------------------------------------------------
>                 Key: SOLR-1537
>                 URL:
>             Project: Solr
>          Issue Type: Improvement
>          Components: search
>    Affects Versions: 1.4, 1.5
>         Environment: All
>            Reporter: Dennis Kubes
>             Fix For: 1.5
>         Attachments: solr-dedupe-20091031-2.patch, solr-dedupe-20091031.patch
> Allows sharded search results to dedupe results by ID based on either the order of the
shards in the shards param or by score.  Allows the result returned to be deterministic. 
If by shards then shards that appear first in the shards param have a higher precedence than
shards that appear later.  If by score then higher scores beat out lower scores.  This doesn't
allow multiple duplicates because currently SOLR only permits a single result by ID to be

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