I was not clear in the last email. I mean "For me, it is impossible to "backup" or "restore" Solr's index by taking a snapshot."
If I make you confuse, I am sorry about that. Sincerely, Kaya Ota 2019年11月21日(木) 19:50 Kayak28 <kaya.ota....@gmail.com>: > Hello, Community Members: > > I am using Solr 7.7.4 > I have a question about a Snapshot API. > > https://lucene.apache.org/solr/guide/7_4/making-and-restoring-backups.html#create-snapshot-api > > I have tested basic of snapshot APIs, create snapshot, list snapshot, > delete snapshot. > > As far as I know, when I do: > - create a snapshot: create a binary file (snapshot_N where n is identical > to segment_N) that contains a path of the index. > - the file is created under data/snapshot_metadata directory. > > - list snapshot: return JSON, containing all snapshot data which show > segment generation and path to the index. > - delete snapshot: delete a snapshot data from snapshot_N. > > For me, it is impossible to "backup" or "restore" Solr's index. > > So, my questions are: > > - How snapshot APIs are related to "backup" or "restore"? > - or more basically, when should I use snapshot API? > - Is there any way to make a "backup" without consuming a double-size of > the index? (I am asking because if I use backup API, it will copy the > entire index) > - what is the cheapest way to make a backup for Solr? > > If you help me out one of these questions or give me any clue, > I will really appreciate. > > Sincerely, > Kaya Ota > > > > > > >
