Re: A quick question on cluster topology and partitions?

2018-07-03 Thread Dmitriy Setrakyan
On Mon, Jul 2, 2018 at 5:20 PM, John Wilson wrote: > Regarding 1. I'm referring to the documentation here, > https://apacheignite.readme.io/docs/topology-validation, which states > "*Topology > validator is used to verify that cluster topology is valid for further > cache operations*." and "*If

Re: A quick question on cluster topology and partitions?

2018-07-02 Thread John Wilson
Regarding 1. I'm referring to the documentation here, https://apacheignite.readme.io/docs/topology-validation, which states "*Topology validator is used to verify that cluster topology is valid for further cache operations*." and "*If topology validator is not configured, then the cluster topology

Re: A quick question on cluster topology and partitions?

2018-07-02 Thread Dmitriy Setrakyan
On Mon, Jul 2, 2018 at 4:03 PM, John Wilson wrote: > Hi, > > >1. What exactly is a cluster topology? What makes a cluster topology >invalid for further cache operations? > Cluster topology is a set of Ignite nodes in the cluster. I do not think a cluster topology could be invalid on its

A quick question on cluster topology and partitions?

2018-07-02 Thread John Wilson
Hi, 1. What exactly is a cluster topology? What makes a cluster topology invalid for further cache operations? 2. Why do we have the concept of partitions in Ignite? Why don't we have a key-to-node mapping rather than a key-to-partition and a partition-to-node mapping? Thanks,