This, question must have been discussed several times before, but I could not find the answer I was looking for in the mailing list archive...
I was wondering if Lucene writing process was 'fully' transactional. As far as I understand, it is supposed to be transactional, as a new segment is referenced in the segments file only when it has been totally written. So, if you kill your application while writing or optimizing to the index, you endup getting some segments files on the disk that are not referenced in the 'segments' file, and that are just left in the index directory without being used. My concern is : if you write again to the index, the indexwriter might write onto the same segment name. But if I am right, FSDirectory.createFile() does not erase the file if it already exists : it opens a RandomAccessFile in read/write mode, which opens the file when it already exists and does not overwrite. In that case, you endup appending data to an existing segment file calling RandomAccessFile.write(byte[] b,int off,int len) instead of writing the segment from scratch, and thus corrupting the index... maybe ? I hope this makes sense... I might be totally wrong, but I would be interested to know... Thanks, Sylvain ___________________________________________________________ Do You Yahoo!? -- Une adresse @yahoo.fr gratuite et en français ! Yahoo! Mail : http://fr.mail.yahoo.fr -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
