I was looking at IndexWriter.commit(commitUserData) and IndexCommit.getUserData() as possible ways to save metadata about documents in an index, but I realized that the metadata we are looking at could easily get to have way too many map entries to work well. This pair of functions looks useful though, and I would like to ask if anyone could describe use cases where it works well to save data in a commitUserData map while indexing for later use in the application. Thanks, Mike