: Then for clean=false, my understanding is that it won't blow off existing : index. For data that exist in index and db table (by the same uniqueKey) : it will update the index data regardless if there is actual field update. : For existing index data but not existing in table (by comparing uniqueKey),
if clean=false, the documents from your DB are indexed -- if you have a uniqueKey field, then docs with the same uniqueKey as an existing doc wil overwrite the existing doc. but nothing will be deleted (so documents you removed from your DB will still live on in your index) clean=true is just another way of saying "delete all docs from the index before doing this import" -Hoss
