Thanks, Erick. >From a testing aspect, if we would like to verify the case that a query request to a "down" core on a running server will be failed over to the good core on another running server, is there any way to make a core as "down" on a running server? Thanks!
We tried to change the /clusterstate.json in ZooKeeper to mark an "active" core as "down", but it seems only change the state in ZK, while the core still functions in solr server. 2015-01-23 12:18 GMT+08:00 Erick Erickson <erickerick...@gmail.com>: > In a word, yes. As far as querying is concerned, there is only "Active" > and "all other states", and > requests are only routed to replicas in the "Active" state. > > Best, > Erick > > On Thu, Jan 22, 2015 at 6:34 PM, 汤林 <tanglin0...@gmail.com> wrote: > >> Thanks, Erick. >> >> You are right. My question is : When a Solr server is running, but a >> core(shard replica) on it is NOT "Active", for example, "Down", will the >> query request to it be failed over to the good replica of the same shard? >> Thanks! >> >> 2015-01-23 10:26 GMT+08:00 Erick Erickson <erickerick...@gmail.com>: >> >>> As long as one replica for each shard is "active", you should be able to >>> query the collection. >>> >>> You an also index to the collection and it'll all "just work", when the >>> replicas that are not active become active they'll get the updates and >>> catch up to the leader. This process may take quite some time so it is >>> probably best, if you have a choice, to turn indexing on after all the >>> replicas are up and running. This is not a requirement, however. >>> >>> Best, >>> Erick >>> >>> On Thu, Jan 22, 2015 at 6:10 PM, 汤林 <tanglin0...@gmail.com> wrote: >>> >>>> A solr core have several state, besides "Active", there are >>>> "Recovering", >>>> "Down", "Recovery failed" and "Gone". >>>> I know when the state is Recovering, the query or index request can be >>>> failover to its leader(the good one), but I'm not sure other state, >>>> especially the "Down" state at the solr server just starting period. >>>> >>>> Could anyone help to confirm? Thanks! >>>> >>> >>> >> >
