JBoss threads looping in KeyAffinityServiceImpl.getKeyForAddress

Issue

• We see increased CPU with threads persisting in the following:

"ajp-localhost/127.0.0.1:8009-512" daemon prio=10 tid=0x00007f1d9c784000 nid=0x3468 waiting on condition [0x00007f1d2f9f9000]
   java.lang.Thread.State: WAITING (parking)
    at sun.misc.Unsafe.park(Native Method)
    - parking to wait for  <0x00000006089540f8> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:834)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:867)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1197)
    at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:214)
    at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:290)
    at java.util.concurrent.ArrayBlockingQueue.poll(ArrayBlockingQueue.java:361)
    at org.infinispan.affinity.KeyAffinityServiceImpl.getKeyForAddress(KeyAffinityServiceImpl.java:141)