On Fri, Apr 4, 2008 at 6:26 PM, Norskog, Lance <[EMAIL PROTECTED]> wrote: > http://wiki.apache.org/solr/MergingSolrIndexes recommends using the > Lucene contributed app IndexMergeTool to merge two Solr indexes. What > happens if both indexes have records with the same unique key? Will they > both go into the new index?
Yes. > Is the implementation of unique IDs in the Solr java or in Lucene? Both. It was originally just in Solr, but Lucene now has an implementation. Neither implementation will prevent this as both just remember documents (in memory) that were added and then periodically delete older documents with the same id. -Yonik
