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

Or you could handle it in Solr, but in an UpdateRequestProcessor so that it happens before indexing and you don't need to learn about analysis chain.

You can use java or a number of scripting languages with the ScriptUpdateProcessor