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From "Dennis Kubes (JIRA)" <>
Subject [jira] Updated: (SOLR-1537) Dedupe Sharded Search Results by Shard Order or Score
Date Fri, 27 Nov 2009 04:37:40 GMT


Dennis Kubes updated SOLR-1537:

    Attachment: SOLR-1537-20091126-4.patch

Final patch.  This incorporates an updated version of SOLR-1143, allowing the return of partial
search results.  This patch fixes bugs in the number of results returned, sorting order, errors
on edge conditions, among others.  This patch also supercedes SOLR-1143 bringing all unit
tests up to date and adding enhanced functionality to allow returning partial results when
servers names are mispelled or there are other errors besides simple connection errors.  Headers
have been added to show the number of shards failing and the names of those shards.  Unit
test have been added to demonstrate dedup of search results by shard order.  This patch passes
all current unit tests.

> 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-1537-20091126-4.patch, 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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