Yes Mike we have CDCR replication as well. On Wed, May 10, 2017 at 1:15 AM, Mike Drob <md...@apache.org> wrote:
> > The searching install will be able to rebuild itself from the data > storage install when that > is required. > > Is this a use case for CDCR? > > Mike > > On Tue, May 9, 2017 at 6:39 AM, Shawn Heisey <apa...@elyograg.org> wrote: > > > On 5/9/2017 12:58 AM, Bharath Kumar wrote: > > > Thanks Hrishikesh and Dave. We use SOLR cloud with 2 extra replicas, > > will that not serve as backup when something goes wrong? Also we use > latest > > solr 6 and from the documentation of solr, the indexing performance has > > been good. The reason is that we are using MySQL as the primary data > store > > and the performance might not be optimal if we write data at a very rapid > > rate. Already we index almost half the fields that are in MySQL in solr. > > > > A replica is protection against data loss in the event of hardware > > failure, but there are classes of problems that it cannot protect > against. > > > > Although Solr (Lucene) does try *really* hard to never lose data that it > > hasn't been asked to delete, it is not designed to be a database. It's > > a search engine. Solr doesn't offer the same kinds of guarantees about > > the data it contains that software like MySQL does. > > > > I personally don't recommend trying to use Solr as a primary data store, > > but if that's what you really want to do, then I would suggest that you > > have two complete Solr installs, with multiple replicas on both. One of > > them will be used for searching and have a configuration you're already > > familiar with, the other will be purely for data storage -- only certain > > fields like the uniqueKey will be indexed, but every other field will be > > stored only. > > > > Running with two separate Solr installs will allow you to optimize one > > for searching and the other for data storage. The searching install > > will be able to rebuild itself from the data storage install when that > > is required. If better performance is needed for the rebuild, you have > > the option of writing a multi-threaded or multi-process program that > > reads from one and writes to the other. > > > > Thanks, > > Shawn > > > > > -- Thanks & Regards, Bharath MV Kumar "Life is short, enjoy every moment of it"
