Shoot in the dark, I have not double checked in details but : With Solr 7.x "Index-time boosts have been removed from Lucene, and are no longer available from Solr. If any boosts are provided, they will be ignored by the indexing chain. As a replacement, index-time scoring factors should be indexed in a separate field and combined with the query score using a function query. See the section Function Queries for more information."
Are you using index time boost by any chance ? If I remember correctly the Norms stored in the segment were affected by the field length and index time boost. Cheers ----- --------------- Alessandro Benedetti Search Consultant, R&D Software Engineer, Director Sease Ltd. - www.sease.io -- Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html