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https://issues.apache.org/jira/browse/SOLR-351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12531203
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Yonik Seeley commented on SOLR-351:
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> a lot of questions about what to do when newSearchers are opened
Yeah, it's not actually getValueSource() where one would normally want the
request... ValueSource is like a Query - relatively independent of context.
getValues(IndexReader reader) is where you normally want it.. but there are
layers of Lucene in between that know nothing of Solr.
> external value source
> ---------------------
>
> Key: SOLR-351
> URL: https://issues.apache.org/jira/browse/SOLR-351
> Project: Solr
> Issue Type: New Feature
> Reporter: Yonik Seeley
>
> Need a way to rapidly do a bulk update of a single field for use as a
> component in a function query (no need to be able to search on it).
> Idea: create an ExternalValueSource fieldType that reads it's values from a
> file. The file could be simple id,val records, and stored in the index
> directory so it would get replicated.
> Values could optionally be updated more often than the searcher
> (hashCode/equals should take this into account to prevent caching issues).
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