As far as I know, partial update in Solr 4.X doesn’t partially update Lucene index , but instead removes a document from the index and indexes an updated one. The underlying lucene always requires to delete the old document and index the new one..
We usually dont use partial update when updating huge number of documents. This is really useful for small number of documents (mostly during push indexing)... -- View this message in context: http://lucene.472066.n3.nabble.com/updating-docs-in-solr-cloud-hangs-tp4067388p4067416.html Sent from the Solr - User mailing list archive at Nabble.com.