RequestIgnoredException on rehash using the Distributed Executor Service

My application exposes its distributed operations via a REST-based infrastructure. To minimize the delta between JBoss starting and the cache starting, I used the new Distributed Executor to "sticky" a task to the data owner of a set of keys (with the same hash code).

NOTE: Rehash still causes problems seen in ISPN-1106. (Attached new logs)

I see a lot of the following error from the DistributedExecutorService when the new node's cache doesn't start in a timely manner:

Reason: java.lang.IllegalStateException: Invalid response

{Satriani-52149(PHL)=RequestIgnoredResponse}

In addition, I see:
org.infinispan.util.concurrent.TimeoutException: Timed out waiting for valid responses!

It takes the cache about 2+ minutes at low throughput rate (30 tx/s) to recover. For high throughput rate, the cluster doesn't recover.