Hi Kumar, According to an existing test this should work: https://github.com/apache/solr/blob/ac3d349dac530cf1001d5113fc21b0fd641cc9d5/solr/core/src/test/org/apache/solr/search/QueryEqualityTest.java#L1494
I noticed we're resolving the preFilter to a DocSetQuery in AbstractVectorQParserBase https://github.com/apache/solr/blob/ac3d349dac530cf1001d5113fc21b0fd641cc9d5/solr/core/src/java/org/apache/solr/search/neural/AbstractVectorQParserBase.java#L149 This DocSetQuery wraps a DocSet. The Solr DocSet implementations don't seem to implement a custom equals/hashCode, so they are only equal when the same instance is returned, which is the case if they are returned from the filter cache. Could there be a reason for findable:true not being resolved by the filterCache in your case? Regards Matthias On Thu, Mar 6, 2025 at 1:18 PM kumar gaurav <kg2...@gmail.com> wrote: > Hi All > > We are using bool query parser for hybrid search with > vectorSimilarty parser as a clause. > > We got the issue that Boolean Query parser is not caching vectorSimilarity > result in Query result cache *in case preFilter is used *which is a culprit > for performance impact. We got Same behaviour with the knn parser as well. > > We debugged it in Solr code and found that if pre-filter is used then > BooleanQuery.hashcode() is calculating different values even if it is the > same query requests. If we remove preFilter then the result cache works. > > Solr Query > { > "params": { > "spellcheck": "true", > "start": "0", > "rows": "10", > "q": "{!bool should=$vectorQuery}", > "defType": "lucene", > "vector": > > "[-0.045949627,-0.027026573,-0.019423958,0.03261444,-0.009923472,0.017075274,-0.018088214,0.09207735,0.004494225,0.10026992...]", > "preFilter": [ > "findable:true", > ], > "vectorQuery": "{!vectorSimilarity f=vector_1024$embeddings > minReturn=0.74 minTraverse=0.72 preFilter=$preFilter v=$vector}" > } > } > > *Is it a bug of Solr which is in line to be fixed in future ? * > > *A lot of thanks in advance. Hoping reply from Alessandro Benedetti :). * > > > > -- > Thanks & Regards > Kumar Gaurav > +91 9313529899 >