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From "Andreas Laager (JIRA)" <>
Subject [jira] Commented: (SOLR-2222) Merge duplicates documents with uniqueKey
Date Mon, 08 Nov 2010 14:18:07 GMT


Andreas Laager commented on SOLR-2222:

I've read this that Lucene does not care about the unique key. But where does the uniqueKey
configuration in the schema.xml come from? Is that part of SOLR? If yes then also SOLR should
also care about it on merging cores.

Our system is using solr with a live core dedicated for inserts that gets merged into a search
core from time to time. We expect a better search performance out of this. I expect a negativ
performance impact when I have to handle all the duplicated documents after the merge. 

> Merge duplicates documents with uniqueKey
> -----------------------------------------
>                 Key: SOLR-2222
>                 URL:
>             Project: Solr
>          Issue Type: Bug
>    Affects Versions: 1.4.1
>            Reporter: Andreas Laager
> When merging one core into an other one could get multiple documents for one uniqueKey.
As a result the facet counts are wrong.

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