Note the sentence: "As a rule of thumb, the number of shards should be a factor ten greater than the planned maximum number of cluster nodes." Thus one cluster node can contain several shards. A shard is basically a container for a group of entries that can be transferred between cluster nodes as the cluster grows or shrinks.
HTH Cheers, Michael Am Donnerstag, 11. September 2014 14:00:02 UTC+2 schrieb Prakhyat Mallikarjun: > > Team, > > I read cluster sharding many time > http://doc.akka.io/docs/akka/2.3-M2/contrib/cluster-sharding.html. > > I understand the "idExtractor", used to pick the actor entries. But did > not understand in detail "shardResolver". > > What is the difference between ShardRegion(not sharding region) and Shard. > > I am unable to follow below paragraph, > shard is a group of entries that will be managed together. The grouping is > defined by the shardResolverfunction shown above. Creating a good > sharding algorithm is an interesting challenge in itself. Try to produce a > uniform distribution, i.e. same amount of entries in each shard. As a rule > of thumb, the number of shards should be a factor ten greater than the > planned maximum number of cluster nodes. > > [Prakhyat] I understand shard is group of entries. But I get confused in > line "same amount of entries in each shard". What does it mean by *each* > shard?Correct me if my understanding is correct, does it mean, consider > if two nodes are clustered, two shard will be created one in each node and > entries will distributed in these two shards? > > -Prakhyat M M > > > -Prakhyat M M > -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. To unsubscribe from this group and stop receiving emails from it, send an email to akka-user+unsubscr...@googlegroups.com. To post to this group, send email to akka-user@googlegroups.com. Visit this group at http://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.
