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https://issues.apache.org/jira/browse/SOLR-17225?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alessandro Benedetti updated SOLR-17225:
----------------------------------------
    Labels: beginner test  (was: test)

> Sleep function query to sleep on execution rather than parsing
> --------------------------------------------------------------
>
>                 Key: SOLR-17225
>                 URL: https://issues.apache.org/jira/browse/SOLR-17225
>             Project: Solr
>          Issue Type: Improvement
>          Components: function query, Tests
>    Affects Versions: 9.5
>            Reporter: Alessandro Benedetti
>            Priority: Major
>              Labels: beginner, test
>
> Currently, there is a sleep(x,y) function query available in Apache Solr.
> This function query sleeps for <x> ms and then return <y> as a value.
> Currently the sleep happens on query parsing, rather than execution.
> This can cause a problem in tests when used for example in Learning To Rank 
> where a function query can be used as a SolrFeature.
> In Learning To Rank the feature extraction is separated from the feature 
> parsing (the weight generation).
> The extraction happens per document while the parsing happens once.
> So when using a sleep feature you expect the sleep to happens whenever you 
> extract the value of the feature rather than at parsing time.



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