Hello Houston, Indeed, upon reading the documentation again, I now see this text, which I must have missed before: SolrCloud Backup/Restore requires a shared file system mounted at the same path on all nodes, or HDFS.
My bad. Could stand to be even bigger, I think. The text. Thanks for contacting me about this. Kind regards, Koen De Groote On Thu, Feb 20, 2020 at 7:04 PM Houston Putman <houstonput...@gmail.com> wrote: > From my experience, you need all nodes to have access to the shared > storage. > Solr will pick which nodes should write each shard's data, and you do not > have a lot of control over which nodes are selected. > This is why in the documentation it says that the backup must be written to > NFS or HDFS. > Solr won't try to retrieve the other replicas over the network. > > I think you will actually get an error back when not every node is able to > see the path where the backup should be written. > But even if you don't receive an error, the backup will not work. > > - Houston > > > > On Thu, Feb 20, 2020 at 11:26 AM Koen De Groote < > koen.degro...@limecraft.com> > wrote: > > > Hello all, > > > > I've recently set up backups, using solr 7.6 > > > > My setup has 3 replicas per collection and several collections. Not all > > collections or replicas are present on all hosts. > > > > That being said, I run the backup command from 1 particular host and only > > that host has access to the mount on which the backup data will be > written. > > > > This means that the host writing the backup data doesn't have all the > data > > on its local filesystem. > > > > Is this a problem? > > > > By which I mean: will data not present on that host be retrieved over the > > network? > > > > What happens in this case? > > > > Kind regards, > > Koen De Groote > > >
