romseygeek opened a new issue, #16137:
URL: https://github.com/apache/lucene/issues/16137
### Description
`IBSimilarity` with `DistributionSPL` can produce negative scores for very
large tf values, which `TestSynonymQuery.testBoosts()` uses. We don't have a
good way to suppress individual Similarity implementations for tests at the
moment, but I think in any case we should be looking to fix the root Similarity
itself? Impacts and competitive iterators all assume that scores can't be
negative, a contract which this Similarity breaks.
### Gradle command to reproduce
On `branch_10x`:
```
./gradlew :lucene:core:test --tests
"org.apache.lucene.search.TestSynonymQuery.testBoosts" -Ptests.jvms=12
-Ptests.jvmargs= -Ptests.seed=EC3CC718CF767FE7 -Ptests.useSecurityManager=false
-Ptests.gui=true
-Ptests.file.encoding=US-ASCII -Ptests.vectorsize=default
-Ptests.forceintegervectors=false
```
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