Hi Rajeswari, what replication model are you using in Solr? NRT or TLOG/PULL?
From: [email protected] At: 12/17/25 13:59:48 UTC-5:00To: [email protected] Cc: [email protected] Subject: Search results consistency with vector search Hi All, Noticed that the vector search results for the same query is different each time. Both ordering and the records are also different based on which replica it hits. All the replicas have same documents and all of them have same embeddings. With vector similarity parser with minReturn=0.8 , minTraversse=0.8 , the numFound for specific query varies from 111 to 8 , which is a huge variation. We are using solr 9.9 and lucene version 9.12.2. I believe this behavior due to approximate HNSW construction in each replica. Tried with minTraverseas 0.75 instead 0.8 , this fetches more records (somewhere in 800s) he variations in numFound is less , but the ordering of the records and even the record is different in this case also each time. Is this expected ? . What can be done to get consistent results each time. Please share your experiences. Thanks, Rajeswari
