When there are multiple 'external file field' files available, Solr will reload the last one (lexicographically) with a commit, but only if changes were made to the index. Otherwise, it skips the reload and logs: "No uncommitted changes. Skipping IW.commit." Has anyone else noticed this? It seems like a bug to me. (yes, I do have firstSearcher and newSearcher event listeners in solrconfig.xml)
Peter