I recently hit the problem described in the topic and posted a quick blog post on how to fix it. Here it is, in case someone will ever encounter it.
http://beerpla.net/2009/09/21/solr-how-to-fix-java-io-ioexception-directory-foo-exists-and-is-a-directory-but-cannot-be-listed-list-returned-null/ http://beerpla.net/2009/09/21/solr-how-to-fix-java-io-ioexception-directory-foo-exists-and-is-a-directory-but-cannot-be-listed-list-returned-null/ P.S. Sorry if you received a prematurely sent version of this message. -- View this message in context: http://www.nabble.com/How-To-Fix-java.io.IOException%3A-directory-FOO-exists-and-is-a-directory%2C-but-cannot-be-listed%3A-list%28%29-returned-null-tp25530502p25530502.html Sent from the Solr - User mailing list archive at Nabble.com.
