arminbalalaie opened a new issue, #2581:
URL: https://github.com/apache/helix/issues/2581

   **Is your feature request related to a problem? Please describe.**
   Currently, to the best of my knowledge, there is no way to handle 
multi-tenancy using Apache Helix. By that I mean separate shard discovery for 
each tenant while rebalancing the resources for them as a whole. 
   
   **Describe the solution you'd like**
   You can have a separate resource for each tenant and as result a distinct 
way for shard discovery for that tenant. At the same time you can enable 
rebalancing the shards across resources to get an even distribution. This also 
opens up opportunities to add a load-based rebalancer as different tenants 
might not have similar loads (this could also be important in a single-tenant 
setting as shards might not be even-sized, but will be signified in a 
multi-tenant setting). 
   
   Another way to address this could be through adding sub-resources and 
provide a way for shard discovery of sub-resources.
   


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