SolrCloud doesn't auto-shard at this point. It doesn't split indexes either (there is an open issue for this: https://issues.apache.org/jira/browse/SOLR-3755 )
At this point you need to specify the number of shards for a collection in advance, with the numShards parameter. When you have more than one shard for a collection, SolrCloud automatically distributes the query to one replica of each shard and join the results for you. Most reliable documentation about SolrCloud can be found here: http://wiki.apache.org/solr/SolrCloud Tomás On Thu, Oct 4, 2012 at 12:02 PM, Jason Huang <jason.hu...@icare.com> wrote: > Hello, > > I am exploring SolrCloud and have a few questions about SolrCloud's > auto-sharding functionality. I couldn't find any good answer from my > online search - if anyone knows the answer to these questions or can > point me to the right document, that would be great! > > (1) Does SolrCloud offer auto-sharding functionality? If we > continuously feed documents to a single index, eventually the shard > will grow to a huge size and the query will be slow. How does > SolrCloud handle this situation? > > (2) If SolrCloud auto-splits a big shard to two small shards, then > shard 1 will have part of the index and shard 2 will have some other > part of index. Is this correct? If so, when we perform a query, do we > need to go through both shards in order to get a good response? Will > this be slow (because we need to go through two shards, or more shards > later if we need to split the shards again when the size is too big)? > > thanks! > > Jason >
