Tomoko Uchida created LUCENE-10589:
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Summary: Fix corner case in TestKnnVectorQuery.testRandomWithFilter
Key: LUCENE-10589
URL: https://issues.apache.org/jira/browse/LUCENE-10589
Project: Lucene - Core
Issue Type: Improvement
Reporter: Tomoko Uchida
{{TestKnnVectorQuery.testRandomWithFilter}} can fail with
java.lang.UnsupportedOperationException.
Reproducible command
{code:java}
./gradlew test --tests TestKnnVectorQuery.testRandomWithFilter
-Dtests.seed=1DA39B92702DAC45 -Dtests.multiplier=3
{code}
{code:java}
org.apache.lucene.search.TestKnnVectorQuery > testRandomWithFilter FAILED
java.lang.UnsupportedOperationException: exact search is not supported
at
__randomizedtesting.SeedInfo.seed([1DA39B92702DAC45:6BEAC2197AD96AE0]:0)
at
org.apache.lucene.search.TestKnnVectorQuery$ThrowingKnnVectorQuery.exactSearch(TestKnnVectorQuery.java:715)
at
org.apache.lucene.search.KnnVectorQuery.searchLeaf(KnnVectorQuery.java:151)
at
org.apache.lucene.search.KnnVectorQuery.rewrite(KnnVectorQuery.java:108)
at
org.apache.lucene.search.ConstantScoreQuery.rewrite(ConstantScoreQuery.java:44)
at
org.apache.lucene.search.IndexSearcher.rewrite(IndexSearcher.java:789)
at
org.apache.lucene.tests.search.AssertingIndexSearcher.rewrite(AssertingIndexSearcher.java:69)
at
org.apache.lucene.search.IndexSearcher.rewrite(IndexSearcher.java:803)
at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:685)
at
org.apache.lucene.search.IndexSearcher.searchAfter(IndexSearcher.java:667)
at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:584)
at
org.apache.lucene.search.TestKnnVectorQuery.testRandomWithFilter(TestKnnVectorQuery.java:556)
{code}
In some edge cases (depending on the random seed),
[KnnVectorQuery.java#147|https://github.com/apache/lucene/blob/fe9d26178d033f585c08a5e86708063ac0ec0c9e/lucene/core/src/java/org/apache/lucene/search/KnnVectorQuery.java#L147]
becomes false, and then `exactSearch()` is called.
The upper bound of [the test range query
(filter)|https://github.com/apache/lucene/blob/fe9d26178d033f585c08a5e86708063ac0ec0c9e/lucene/core/src/test/org/apache/lucene/search/TestKnnVectorQuery.java#L554]
could be 200 (the max value of "tag" field + 1) instead of lower + 150 to make
it "unrestrictive"?
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