Perhaps you are running the update request more than once accidentally? Can you try using optimistic update with _version_ while sending the update? This way, if some part of your code is making a duplicate request then Solr would throw an error.
See https://cwiki.apache.org/confluence/display/solr/Updating+Parts+of+Documents On Wed, Oct 30, 2013 at 3:35 PM, Anupam Bhattacharya <anupam...@gmail.com>wrote: > I am working on a offline tagging capability to tag records with a > thesaurus dictionary of key concepts. I am able to use the update="add" > option using xml and json update calls for a field to update specific > document field information. Although if I run the same atomic update query > twice then the multivalued string fields start showing duplicate value in > the multivalued field. > e.g. for a field name as tag at the initial it was having copper, iron, > steel > After running the atomic update query with <field name="tag" > update="add">steel</field> I will get the tag field values as following: > copper, iron, steel, steel. (Thus steel get added twice). > I looked at RemoveDuplicatesTokenFilterFactory but it helps to remove token > duplicate not multivalued field duplicates. Is there any updateProcessor to > stop the incoming duplicate value from indexing ? > > Thanks in advance for any help. > > Regards > Anupam > -- Regards, Shalin Shekhar Mangar.
