Errors to add connected switch during ONOS restart

2016-02-02 13:09:54,593 | INFO  | w I/O worker #14 | OFChannelHandler                 | 169 - org.onosproject.onos-of-ctl - 1.5.0.SNAPSHOT | New switch connection from /128.110.96.83:58053
2016-02-02 13:09:54,594 | INFO  | w I/O worker #14 | OFChannelHandler                 | 169 - org.onosproject.onos-of-ctl - 1.5.0.SNAPSHOT | Sending OF_13 Hello to /128.110.96.83:58053
2016-02-02 13:09:54,595 | INFO  | w I/O worker #14 | OFChannelHandler                 | 169 - org.onosproject.onos-of-ctl - 1.5.0.SNAPSHOT | Received port desc reply for switch at [/128.110.96.83:58053 DPID[00:00:00:00:00:00:00:02]]
2016-02-02 13:09:54,597 | INFO  | w I/O worker #14 | OFChannelHandler                 | 169 - org.onosproject.onos-of-ctl - 1.5.0.SNAPSHOT | Received switch description reply OFDescStatsReplyVer13(xid=4294967289, flags=[], mfrDesc=Nicira, Inc., hwDesc=Open vSwitch, swDesc=2.3.2, serialNum=None, dpDesc=None) from switch at /128.110.96.83:58053
2016-02-02 13:09:54,598 | INFO  | w I/O worker #14 | Controller                       | 169 - org.onosproject.onos-of-ctl - 1.5.0.SNAPSHOT | OpenFlow handshaker found for device 2: org.onosproject.driver.handshaker.NiciraSwitchHandshaker [? DPID[00:00:00:00:00:00:00:02]]
2016-02-02 13:09:54,598 | ERROR | w I/O worker #14 | ntrollerImpl$OpenFlowSwitchAgent | 169 - org.onosproject.onos-of-ctl - 1.5.0.SNAPSHOT | Trying to add connectedSwitch but found a previous value for dpid: 00:00:00:00:00:00:00:02
2016-02-02 13:09:54,598 | ERROR | w I/O worker #14 | OFChannelHandler                 | 169 - org.onosproject.onos-of-ctl - 1.5.0.SNAPSHOT | Duplicated dpid or incompleted cleanup - disconnecting channel org.onosproject.driver.handshaker.NiciraSwitchHandshaker [/128.110.96.83:58053 DPID[00:00:00:00:00:00:00:02]]
2016-02-02 13:09:54,598 | INFO  | w I/O worker #14 | OFChannelHandler                 | 169 - org.onosproject.onos-of-ctl - 1.5.0.SNAPSHOT | Switch disconnected callback for sw:org.onosproject.driver.handshaker.NiciraSwitchHandshaker [/128.110.96.83:58053 DPID[00:00:00:00:00:00:00:02]]. Cleaning up ...
2016-02-02 13:09:54,598 | INFO  | w I/O worker #14 | OFChannelHandler                 | 169 - org.onosproject.onos-of-ctl - 1.5.0.SNAPSHOT | org.onosproject.driver.handshaker.NiciraSwitchHandshaker [/128.110.96.83:58053 DPID[00:00:00:00:00:00:00:02]]:duplicate found
2016-02-02 13:09:54,602 | INFO  | w I/O worker #14 | OFChannelHandler                 | 169 - org.onosproject.onos-of-ctl - 1.5.0.SNAPSHOT | Processing 0 pending port status messages for 00:00:00:00:00:00:00:02
2016-02-02 13:09:55,073 | ERROR | ow-backup-sender | NewDistributedFlowRuleStore      | 117 - org.onosproject.onos-core-dist - 1.5.0.SNAPSHOT | Backup failed.
org.onosproject.store.service.ConsistentMapException$Timeout
	at org.onosproject.store.primitives.impl.DefaultConsistentMap.complete(DefaultConsistentMap.java:213)
	at org.onosproject.store.primitives.impl.DefaultConsistentMap.entrySet(DefaultConsistentMap.java:148)
	at org.onosproject.store.cluster.impl.DistributedLeadershipStore.getLeaderships(DistributedLeadershipStore.java:219)
	at org.onosproject.cluster.impl.LeadershipManager.getLeaderBoard(LeadershipManager.java:112)
	at org.onosproject.cluster.LeadershipService.ownedTopics(LeadershipService.java:70)
	at org.onosproject.store.mastership.impl.ConsistentDeviceMastershipStore.getDevices(ConsistentDeviceMastershipStore.java:213)
	at org.onosproject.cluster.impl.MastershipManager.getDevicesOf(MastershipManager.java:177)
	at org.onosproject.store.flow.impl.NewDistributedFlowRuleStore$InternalFlowTable.backup(NewDistributedFlowRuleStore.java:851)[117:org.onosproject.onos-core-dist:1.5.0.SNAPSHOT]
	at org.onosproject.store.flow.impl.NewDistributedFlowRuleStore$InternalFlowTable.access$1100(NewDistributedFlowRuleStore.java:659)[117:org.onosproject.onos-core-dist:1.5.0.SNAPSHOT]
	at org.onosproject.store.flow.impl.NewDistributedFlowRuleStore.lambda$activate$9(NewDistributedFlowRuleStore.java:213)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)[:1.8.0_72]
	at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)[:1.8.0_72]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)[:1.8.0_72]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)[:1.8.0_72]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)[:1.8.0_72]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)[:1.8.0_72]
	at java.lang.Thread.run(Thread.java:745)[:1.8.0_72]
2016-02-02 13:09:55,228 | WARN  | nos-shared-timer | NiciraSwitchHandshaker           | 168 - org.onosproject.onos-of-api - 1.5.0.SNAPSHOT | Dropping messages for switch 00:00:00:00:00:00:00:01 because channel is not connected: [OFTableStatsRequestVer13(xid=496, flags=[])]
2016-02-02 13:09:55,625 | WARN  | d wheel timer #1 | NiciraSwitchHandshaker           | 168 - org.onosproject.onos-of-api - 1.5.0.SNAPSHOT | Dropping messages for switch 00:00:00:00:00:00:00:01 because channel is not connected: [OFPortStatsRequestVer13(xid=11, flags=[], portNo=any)]
2016-02-02 13:09:55,625 | WARN  | d wheel timer #1 | NiciraSwitchHandshaker           | 168 - org.onosproject.onos-of-api - 1.5.0.SNAPSHOT | Dropping messages for switch 00:00:00:00:00:00:00:02 because channel is not connected: [OFPortStatsRequestVer13(xid=10, flags=[], portNo=any)]