: 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
