JBoss EAP 6 stalls recursively scanning exploded deployment during startup

Issue

We are deploying an application that has a symlink to NFS share with a very large number of files. JBoss hangs when starting the server.

In thread dumps, we see:

"DeploymentScanner-threads - 1" prio=10 tid=0x00007f0ad80e2800 nid=0x253e runnable [0x00007f0b18961000]
   java.lang.Thread.State: RUNNABLE
    at java.io.UnixFileSystem.list(Native Method)
    at java.io.File.list(File.java:973)
    at java.io.File.listFiles(File.java:1051)
    at org.jboss.as.server.deployment.scanner.FileSystemDeploymentService.getDeploymentTimestamp(FileSystemDeploymentService.java:770)
    at org.jboss.as.server.deployment.scanner.FileSystemDeploymentService.getDeploymentTimestamp(FileSystemDeploymentService.java:771)
    at org.jboss.as.server.deployment.scanner.FileSystemDeploymentService.getDeploymentTimestamp(FileSystemDeploymentService.java:771)
    at org.jboss.as.server.deployment.scanner.FileSystemDeploymentService.scanDirectory(FileSystemDeploymentService.java:567)
    at org.jboss.as.server.deployment.scanner.FileSystemDeploymentService.scan(FileSystemDeploymentService.java:360)
    at org.jboss.as.server.deployment.scanner.FileSystemDeploymentService.oneOffScan(FileSystemDeploymentService.java:335)
    at org.jboss.as.server.deployment.scanner.DeploymentScannerAdd$2.run(DeploymentScannerAdd.java:161)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
    at java.lang.Thread.run(Thread.java:662)
    at org.jboss.threads.JBossThread.run(JBossThread.java:122)