DirectoryScanner will throw IllegalStateException when Multiple BP's are present

2017-08-18 19:06:37,150 [java.util.concurrent.ThreadPoolExecutor$Worker@37d68b4e[State = -1, empty queue]] ERROR datanode.DirectoryScanner (DirectoryScanner.java:getDiskReport(551)) - Error compiling report for the volume, StorageId: DS-258b5e16-caa3-48c8-a0c8-b16934eb8a0c
java.util.concurrent.ExecutionException: java.lang.IllegalStateException: StopWatch is already running
	at java.util.concurrent.FutureTask.report(FutureTask.java:122)
	at java.util.concurrent.FutureTask.get(FutureTask.java:192)
	at org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getDiskReport(DirectoryScanner.java:542)
	at org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.scan(DirectoryScanner.java:392)
	at org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.reconcile(DirectoryScanner.java:373)
	at org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.run(DirectoryScanner.java:318)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalStateException: StopWatch is already running
	at org.apache.hadoop.util.StopWatch.start(StopWatch.java:49)
	at org.apache.hadoop.hdfs.server.datanode.DirectoryScanner$ReportCompiler.call(DirectoryScanner.java:612)
	at org.apache.hadoop.hdfs.server.datanode.DirectoryScanner$ReportCompiler.call(DirectoryScanner.java:579)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	... 3 more