Statistics manager is throwing IllegalStateException

Statistics manager throwing following exception when switch reconnect frequently.

2014-04-22 03:46:37.406 IST [md-sal-binding-commit-0] ERROR o.o.c.m.s.c.i.service.TwoPhaseCommit - Unhandled exception when invoking listener AbstractObjectRegistration

{instance=org.opendaylight.controller.md.statistics.manager.FlowCapableTracker@1dfac44c}

java.lang.IllegalStateException: Timer already cancelled.
at java.util.Timer.sched(Timer.java:397) ~[na:1.7.0_51]
at java.util.Timer.schedule(Timer.java:248) ~[na:1.7.0_51]
at org.opendaylight.controller.md.statistics.manager.NodeStatisticsHandler.start(NodeStatisticsHandler.java:295) ~[na:na]
at org.opendaylight.controller.md.statistics.manager.StatisticsProvider.startNodeHandlers(StatisticsProvider.java:151) ~[na:na]
at org.opendaylight.controller.md.statistics.manager.FlowCapableTracker.onDataChanged(FlowCapableTracker.java:107) ~[na:na]
at org.opendaylight.controller.md.sal.common.impl.service.TwoPhaseCommit$1.run(TwoPhaseCommit.java:228) ~[na:na]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) [na:1.7.0_51]
at java.util.concurrent.FutureTask.run(FutureTask.java:262) [na:1.7.0_51]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_51]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_51]
at java.lang.Thread.run(Thread.java:744) [na:1.7.0_51]