Removing Solr duplicate values into multivalued field

Question

My Solr index contains a multivalued field with duplicate values. How can I remove the duplicates ?

Is it possible to overwrite duplicate values into the multivalued fie

Answer 1

I am using solrJ to bind documents, and to avoid duplicated values I defined my multivalued field as a HashSet.

@Field("description")
public Collection description = new HashSet<>();