2017-05-14 06:18:34,666 | WARN | lt-dispatcher-22 | FrontendClientMetadataBuilder | 199 - org.opendaylight.controller.sal-distributed-datastore - 1.5.0.Carbon | member-1-shard-default-config: Unknown history for purged transaction member-3-datastore-config-fe-0-chn-2-txn-1522-0, ignoring

 2017-05-14 06:18:34,674 | INFO | lt-dispatcher-28 | ShardManager | 199 - org.opendaylight.controller.sal-distributed-datastore - 1.5.0.Carbon | shard-manager-config Received follower initial sync status for member-1-shard-default-config status sync done false
 2017-05-14 06:18:34,716 | INFO | ult-dispatcher-2 | ShardManager | 199 - org.opendaylight.controller.sal-distributed-datastore - 1.5.0.Carbon | shard-manager-config Received follower initial sync status for member-1-shard-default-config status sync done true
 2017-05-14 06:18:34,716 | INFO | ult-dispatcher-2 | ShardManager | 199 - org.opendaylight.controller.sal-distributed-datastore - 1.5.0.Carbon | shard-manager-config Received follower initial sync status for member-1-shard-default-config status sync done false
 2017-05-14 06:18:34,724 | INFO | lt-dispatcher-29 | ShardManager | 199 - org.opendaylight.controller.sal-distributed-datastore - 1.5.0.Carbon | shard-manager-config Received follower initial sync status for member-1-shard-default-config status sync done true
 2017-05-14 06:18:34,724 | INFO | lt-dispatcher-29 | ShardManager | 199 - org.opendaylight.controller.sal-distributed-datastore - 1.5.0.Carbon | shard-manager-config: Received LeaderStateChanged message: LeaderStateChanged [memberId=member-1-shard-default-config, leaderId=null, leaderPayloadVersion=5]
 2017-05-14 06:18:44,695 | ERROR | lt-dispatcher-21 | ClusterAdminRpcService | 201 - org.opendaylight.controller.sal-cluster-admin-impl - 1.5.0.Carbon | Leadership transfer failed for shard default.
 org.opendaylight.controller.cluster.raft.LeadershipTransferFailedException: Failed to transfer leadership to member-1-shard-default-config. Follower is not ready to become leader
 at org.opendaylight.controller.cluster.raft.RaftActor$1.onFailure(RaftActor.java:304)
 at org.opendaylight.controller.cluster.raft.RaftActorLeadershipTransferCohort.finish(RaftActorLeadershipTransferCohort.java:187)
 at org.opendaylight.controller.cluster.raft.RaftActorLeadershipTransferCohort.abortTransfer(RaftActorLeadershipTransferCohort.java:138)
 at org.opendaylight.controller.cluster.raft.RaftActorLeadershipTransferCohort$1.doCancel(RaftActorLeadershipTransferCohort.java:112)
 at org.opendaylight.controller.cluster.raft.TimedRunnable.cancel(TimedRunnable.java:47)
 at org.opendaylight.controller.cluster.raft.TimedRunnable.lambda$new$0(TimedRunnable.java:33)
 at org.opendaylight.controller.cluster.raft.RaftActor.handleCommand(RaftActor.java:264)
 at org.opendaylight.controller.cluster.common.actor.AbstractUntypedPersistentActor.onReceiveCommand(AbstractUntypedPersistentActor.java:31)
 at akka.persistence.UntypedPersistentActor.onReceive(PersistentActor.scala:170)
 at org.opendaylight.controller.cluster.common.actor.MeteringBehavior.apply(MeteringBehavior.java:104)
 at akka.actor.ActorCell$$anonfun$become$1.applyOrElse(ActorCell.scala:544)
 at akka.actor.Actor$class.aroundReceive(Actor.scala:497)
 at akka.persistence.UntypedPersistentActor.akka$persistence$Eventsourced$$super$aroundReceive(PersistentActor.scala:168)
 at akka.persistence.Eventsourced$$anon$1.stateReceive(Eventsourced.scala:664)
 at akka.persistence.Eventsourced$class.aroundReceive(Eventsourced.scala:183)
 at akka.persistence.UntypedPersistentActor.aroundReceive(PersistentActor.scala:168)
 at akka.actor.ActorCell.receiveMessage(ActorCell.scala:526)
 at akka.actor.ActorCell.invoke(ActorCell.scala:495)
 at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:257)
 at akka.dispatch.Mailbox.run(Mailbox.scala:224)
 at akka.dispatch.Mailbox.exec(Mailbox.scala:234)
 at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
 at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
 at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
 at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)