It *should* work as a drop in replacement. Check: http://svn.apache.org/repos/asf/lucene/solr/trunk/CHANGES.txt
So you should be good. Note that trunk has a newer verison of lucene, so the index will be automatically upgraded and you can't go back from there.
so make sure to backup before trying, but it should go smoothly... ryan Chris Harris wrote:
What are the odds that I can plop an index created in Solr 1.2 into a Solr 1.3 and/or Solr trunk install and have things work correctly? This would be more convenient than reindexing, but I'm wondering how dangerous it is, and hence how much testing is required.
