Vinod Kumar Vavilapalli commented on GIRAPH-37:

Have you thought about security? In the README, I found that Giraph works with 
a secure hadoop installation. I checked the code too (_RPCCommunications_ & 
related classes) and figured that on each worker, both the RPC server and the 
clients to other peers use Hadoop Mapreduce JobToken for authentication of 
connections. If security is a strong requirement for some folks (Y! ?), you 
should also think about that when you replace Hadoop RPC with Netty based 

> Implement Netty-backed rpc solution
> -----------------------------------
>                 Key: GIRAPH-37
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-37
>             Project: Giraph
>          Issue Type: New Feature
>            Reporter: Jakob Homan
>            Assignee: Jakob Homan
> GIRAPH-12 considered replacing the current Hadoop based rpc method with 
> Netty, but didn't went in another direction. I think there is still value in 
> this approach, and will also look at Finagle.

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