How to know which nodes does one cache entry reside

Question

I have an Ignite Cluster with 10 nodes， I have a partitioned cache, 2 backups. For a given cache entry, i would like to know which nodes doesn't this entry reside in? Looks the command line interface(ignitevisorcmd.sh) doesn't provide this functionality.

Answer 1

This is how you can get primary node for a key:

Affinity affinity = ignite.affinity("my-cache");
ClusterNode primary = affinity.mapKeyToNode(key);

Affinity API has also bunch of other methods that allow to manually calculate affinity (partition numbers, node mappings, etc).