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https://issues.apache.org/jira/browse/SOLR-14607?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17318166#comment-17318166
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Christine Poerschke commented on SOLR-14607:
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I could see possibilities 0, 1 and 6 work. With possibilities 2 to 5 it seems
to me things get too complicated from the caller's perspective i.e. what
exactly was returned and how meaningful and useable are the results.
[~limingnihao] and [~abenedetti] - what do you think of the various scenarios
and possibilities? And perhaps you can think of additional scenarios and
possibilities?
Separately, I wonder what the query-reranking e.g.
[https://solr.apache.org/guide/8_8/query-re-ranking.html#rerank-query-parser]
does currently i.e (how) is this solved there already?
> LTR Query, timeAllowed parameter causes a timeout exception with no result
> --------------------------------------------------------------------------
>
> Key: SOLR-14607
> URL: https://issues.apache.org/jira/browse/SOLR-14607
> Project: Solr
> Issue Type: Improvement
> Components: contrib - LTR
> Affects Versions: main (9.0)
> Reporter: Dawn
> Priority: Minor
> Attachments: SOLR-14607-poc.patch
>
> Time Spent: 2h 10m
> Remaining Estimate: 0h
>
> When using the LTR, open timeAllowed parameter, LTR feature of query may call
> 'ExitableFilterAtomicReader.CheckAndThrow' timeout checks.
> If a timeout occurs at this point, the exception ExitingReaderException is
> thrown, Lead to null result.
> Exception information:
> {code:java}
> The request took too long to iterate over terms. Timeout: timeoutAt:
> 50321611131050 (System.nanoTime(): 50321639573838),
> TermsEnum=org.apache.lucene.codecs.blocktree.SegmentTermsEnum@62eaeeaa
> {code}
>
> Can hold this exception in the LTR, returning partial results rather than
> null.
> This exception occurs in two places:
> 1. 'LTRScoringQuery.CreateWeight' or 'LTRScoringQuery.createWeightsParallel'.
> Here is the loading stage, timeout directly end is acceptable.
> 2. 'ModelWeight.scorer'. This is a stage that evaluates each Doc and can
> catch the exception, returns the computed document.
>
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