[jira] [Created] (SOLR-14607) LTR Query, timeAllowed parameter causes a timeout exception with no result

["Dawn (Jira)" <ji...@apache.org>]

Dawn created SOLR-14607:
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             Summary: 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
      Security Level: Public (Default Security Level. Issues are Public)
          Components: contrib - LTR
    Affects Versions: master (9.0)
            Reporter: Dawn


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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