Hi, I'm writing a backup routine for a system that includes Lucene for full-text search. The primary data store is based on immutable files, so it can be backed-up incrementally by copying any new files (and removing any files that have been deleted from earlier backups). It's my understanding from brief comments found on the internet that most, if not all the files that comprise a Lucene index are similarly immutable.
Can someone please confirm or deny that statement? If the Lucene files are mostly, but not entirely, immutable, it would be greatly appreciated if the exceptions could be identified. I would imagine there might be log files that would be mutable, for example. Thank you very much for your help. Larry
