I think I had the same problem (the same error at least) and submitted a patch. The patch adds a new config option to use the nio locking facilities instead of the default lucene locking. In the ~week since I haven't seen the issue after applying the patch (ymmv)
https://issues.apache.org/jira/browse/SOLR-240 - will -----Original Message----- From: Chris Hostetter [mailto:[EMAIL PROTECTED] Sent: Friday, May 25, 2007 1:50 AM To: solr-user@lucene.apache.org Subject: Re: index problem with write lock : i know how to fix it. : : but i just don't know why it happen. : : this solr error information: : : > Exception during commit/optimize:java.io.IOException: Lock obtain timed : > out: SimpleFSLock@/usr/solrapp/solr21/data/index/write.lock that's the problem you see ... but in normal SOlr operation there's no reason why there should be any problem getting the write lock -- Solr only ever makes one IndexWriter at a time. which is why i asked about any other errors earlier in your log (possibly much earlier) to indicate *abnormal* Solr operation. -Hoss
