How are you indexing the documents? Are you using indexing program? The below post discusses the same issue..
http://lucene.472066.n3.nabble.com/removing-write-lock-file-in-solr-after-indexing-td3699356.html -- View this message in context: http://lucene.472066.n3.nabble.com/solr-4-3-write-lock-is-not-removed-tp4066908p4067101.html Sent from the Solr - User mailing list archive at Nabble.com.