Hello. I read the FAQ entry about rebuilding the index,
http://wiki.apache.org/solr/FAQ#How_can_I_rebuild_my_index_from_scratch_if_I_change_my_schema.3F but it is not clear about the times when this is needed. So I wonder, do I need to do it after adding a field, removing a field, changing field type, changing indexed/stored/multiValue properties? What happens if I don't do it, will Solr die? Also, the FAQ entry notes that one can "delete all documents, change the schema.xml file, and then reload the core". Would it be possible to instead change schema.xml, reload the core, and then rebuild the index -- in effect slowly deleting the old documents, but never ending up with a completely empty index? I realize that some weird search results could happen during such a rebuild, but that may be preferable to having no search results at all. (I also realize that we need more Solr servers, to be able to do these updates without taking down the search service. But, currently we have just one) Thanks, Anders.
