So it sounds like what you want is partial results. We don't support that yet, but there is a JIRA issue for it.
Currently we require that the full index is available - which means if you want to survive any given instance instance going down, you need to have a replica for each shard A and shard B. On Feb 2, 2012, at 8:15 PM, Darren Govoni wrote: > Thanks for the reply Mark. > > I did example A. One of the instances had zookeeper. If I shut down the other > instance, all searches on the other (running) instance produced an error in > the browser. > I don't have the error handy but it was one line. Something like missing > shard in collection IIRC. > > What I'm hoping to achieve is this. > > Shard A: DocA, DocB > Shard B: DocC, DocD > > if I do a query with both shards running I get DocA,DocB,DocC,DocD. If Shard > B goes down, I only get DocA, DocB. > > After that I will fold replication in to understand it. > > On 02/02/2012 04:22 PM, Mark Miller wrote: >> On Feb 2, 2012, at 9:51 AM, dar...@ontrenet.com wrote: >> >>> Hi, >>> I want to use SolrCloud in a more federated mode rather than >>> replication. The failover is nice, but I am more interested in >>> increasing capacity of an index through horizontal scaling (shards). >>> >>> How can I configure shards such that they retain their own documents and >>> don't replicate (or replicate to some shards and not all)? Thus, when I >>> search from any shard I want results from all shards (being different >>> results from each). >>> >>> Currently, if I kill a shard (using the example provided), no search works >>> and it errors out. >>> >>> thanks! >> >> What example are you trying? Are you following it exactly? In order to serve >> requests at least one instance has to be up for every shard - but what you >> describe is how things work if you have enough replicas. >> >> Example A splits the index across two shards, but there are no replicas - if >> an instance goes down, search will not work. >> >> Example B and C add replicas. This means that one instance can die per shard >> and you will still be able to serve requests. >> >> Keep in mind that if you are running ZooKeeper with Solr (as the examples >> do), you have to make sure at least half the nodes running ZooKeeper are up. >> If that is only one node, you cannot kill that node - it will be a single >> point of failure unless you create a ZooKeeper ensemble. >> >> - Mark Miller >> lucidimagination.com >> >> >> >> >> >> >> >> >> >> >> > - Mark Miller lucidimagination.com
