Recently I find my unit test will failed sometimes but no always. I use Lucene 4.3.0
After inverstigation, I found when I try to open a IndexWriter for a disk directory. Some time it will throw this exception: org.apache.lucene.store.LockObtainFailedException: Lock obtain timed out: NativeFSLock@/tmp/test-idx/write.lock The default time out is 1000ms, when I set to 3000ms, seems this exception disappeared. But I think 1000ms should be enough, how can it happen. What's the recommended number? Some time it will throw another exception which I think is more serious. read past EOF: SimpleFSIndexInput Each test will purge the index folder, however this exception will happen sometimes. I don't know the reason, how can I fix this exception?
