I want to take back-up of a Lucene index. I need to ensure that index files would not change when I take their backup.
I am concerned about the housekeeping/merge/optimization activities which Lucene performs internally. I am not sure when/how these activities are performed by Lucene and how we can prevent them. My application (which allows indexing and searching over the created indexes) keeps running in the background. I can ensure that nothing is written to the indexes by my application when I take their backup, but I am not sure whether indexes would change in some manner when a search is performed over it. How can I ensure that an index would not change (i.e., no housekeeping/merge/optimization activity is performed by Lucene) when I take its backup? Any help would be much appreciated. PS: Currently I am using Lucene 2.9.4 but wish to upgrade it to 3.6.2. Regards Ashish
