During SSL and client authentication network communication, there is a race condition may happen, the exception are looking like this:
Exception in thread "HandshakeCompletedNotify-Thread" java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(Unknown Source)
at java.util.HashMap$EntryIterator.next(Unknown Source)
at java.util.HashMap$EntryIterator.next(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl$NotifyHandshakeThread.run(Unknown Source)
This is a partial fix for bug 7060523, which will only apply to JDK repository.