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Posted to issues@lucene.apache.org by "Christine Poerschke (Jira)" <ji...@apache.org> on 2022/05/17 18:07:00 UTC
[jira] [Reopened] (LUCENE-10477) SpanBoostQuery.rewrite was incomplete for boost==1 factor
[ https://issues.apache.org/jira/browse/LUCENE-10477?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Christine Poerschke reopened LUCENE-10477:
------------------------------------------
re-opening for potential backport: https://github.com/apache/lucene-solr/pull/2656
> SpanBoostQuery.rewrite was incomplete for boost==1 factor
> ---------------------------------------------------------
>
> Key: LUCENE-10477
> URL: https://issues.apache.org/jira/browse/LUCENE-10477
> Project: Lucene - Core
> Issue Type: Bug
> Affects Versions: 8.11.1
> Reporter: Christine Poerschke
> Assignee: Christine Poerschke
> Priority: Minor
> Fix For: 10.0 (main), 9.2
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> _(This bug report concerns pre-9.0 code only but it's so subtle that it warrants sharing I think and maybe fixing if there was to be a 8.11.2 release in future.)_
> Some existing code e.g. [https://github.com/apache/lucene-solr/blob/releases/lucene-solr/8.11.1/lucene/queryparser/src/java/org/apache/lucene/queryparser/xml/builders/SpanNearBuilder.java#L54] adds a {{SpanBoostQuery}} even if there is no boost or the boost factor is {{1.0}} i.e. technically wrapping is unnecessary.
> Query rewriting should counteract this somewhat except it might not e.g. note at [https://github.com/apache/lucene-solr/blob/releases/lucene-solr/8.11.1/lucene/core/src/java/org/apache/lucene/search/spans/SpanBoostQuery.java#L81-L83] how the rewrite is a no-op i.e. {{this.query.rewrite}} is not called!
> This can then manifest in strange ways e.g. during highlighting:
> {code:java}
> ...
> java.lang.IllegalArgumentException: Rewrite first!
> at org.apache.lucene.search.spans.SpanMultiTermQueryWrapper.createWeight(SpanMultiTermQueryWrapper.java:99)
> at org.apache.lucene.search.spans.SpanNearQuery.createWeight(SpanNearQuery.java:183)
> at org.apache.lucene.search.highlight.WeightedSpanTermExtractor.extractWeightedSpanTerms(WeightedSpanTermExtractor.java:295)
> ...
> {code}
> This stacktrace is not from 8.11.1 code but the general logic is that at line 293 rewrite was called (except it didn't a full rewrite because of {{SpanBoostQuery}} wrapping around the {{{}SpanNearQuery{}}}) and so then at line 295 the {{IllegalArgumentException("Rewrite first!")}} arises: [https://github.com/apache/lucene-solr/blob/releases/lucene-solr/8.11.1/lucene/core/src/java/org/apache/lucene/search/spans/SpanMultiTermQueryWrapper.java#L101]
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