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https://issues.apache.org/jira/browse/SOLR-2583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13049709#comment-13049709
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Robert Muir commented on SOLR-2583:
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bq. that uses a fixed size and an increasing number of puts
I'm not certain how realistic that is, remember behind the scenes
compactbytearray uses blocks,
and if you touch every one (by putting every K docid or something) then you are
just testing
the worst case.
> Make external scoring more efficient (ExternalFileField, FileFloatSource)
> -------------------------------------------------------------------------
>
> Key: SOLR-2583
> URL: https://issues.apache.org/jira/browse/SOLR-2583
> Project: Solr
> Issue Type: Improvement
> Components: search
> Reporter: Martin Grotzke
> Priority: Minor
> Attachments: FileFloatSource.java.patch, patch.txt
>
>
> External scoring eats much memory, depending on the number of documents in
> the index. The ExternalFileField (used for external scoring) uses
> FileFloatSource, where one FileFloatSource is created per external scoring
> file. FileFloatSource creates a float array with the size of the number of
> docs (this is also done if the file to load is not found). If there are much
> less entries in the scoring file than there are number of docs in total the
> big float array wastes much memory.
> This could be optimized by using a map of doc -> score, so that the map
> contains as many entries as there are scoring entries in the external file,
> but not more.
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