Alessandro Benedetti created SOLR-17225:
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Summary: 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
Security Level: Public (Default Security Level. Issues are Public)
Components: function query, Tests
Affects Versions: 9.5.0
Reporter: Alessandro Benedetti
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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