 Issue 29:	ConcurrentModificationException when Running Parallel Pipeline
 Issue 29:	ConcurrentModificationException when Running Parallel
Pipeline
sb43/bpipe,tucano/bpipe,vivovip/bpipe,tucano/bpipe,vivovip/bpipe,vivovip/bpipe,tucano/bpipe,sb43/bpipe,sb43/bpipe