Yes, I also have this problem using 0.8.1. if you want second time is works, I always manual delete the node in zookeeper
Best Regards Jerry -----Original Message----- From: "Chris George"<ch...@htmlcreators.com> To: <users@kafka.apache.org>; Cc: Sent: 2014-03-25 (星期二) 05:03:22 Subject: Fwd: When running kafka-preferred kafka-preferred-replica-election.sh for a second time a node exists exception is being thrown When running kafka-preferred kafka-preferred-replica-election.sh for a second time a node exists exception is being thrown for /admin/preferred_replica_election The node doesn't seem to get cleaned up. Failed to start preferred replica election kafka.common.AdminCommandFailedException: Admin command failed at kafka.admin.PreferredReplicaLeaderElectionCommand.moveLeaderToPreferredReplica(PreferredReplicaLeaderElectionCommand.scala:115) at kafka.admin.PreferredReplicaLeaderElectionCommand$.main(PreferredReplicaLeaderElectionCommand.scala:60) at kafka.admin.PreferredReplicaLeaderElectionCommand.main(PreferredReplicaLeaderElectionCommand.scala) Aborting operation at kafka.admin.PreferredReplicaLeaderElectionCommand$.writePreferredReplicaElectionData(PreferredReplicaLeaderElectionCommand.scala:101) at kafka.admin.PreferredReplicaLeaderElectionCommand.moveLeaderToPreferredReplica(PreferredReplicaLeaderElectionCommand.scala:113) ... 2 more Caused by: org.I0Itec.zkclient.exception.ZkNodeExistsException: org.apache.zookeeper.KeeperException$NodeExistsException: KeeperErrorCode = NodeExists for /admin/preferred_replica_election at org.I0Itec.zkclient.exception.ZkException.create(ZkException.java:55) at org.I0Itec.zkclient.ZkClient.retryUntilConnected(ZkClient.java:685) at org.I0Itec.zkclient.ZkClient.create(ZkClient.java:304) at org.I0Itec.zkclient.ZkClient.createPersistent(ZkClient.java:243) at kafka.utils.ZkUtils$.createPersistentPath(ZkUtils.scala:337) at kafka.admin.PreferredReplicaLeaderElectionCommand$.writePreferredReplicaElectionData(PreferredReplicaLeaderElectionCommand.scala:95) ... 3 more Caused by: org.apache.zookeeper.KeeperException$NodeExistsException: KeeperErrorCode = NodeExists for /admin/preferred_replica_election at org.apache.zookeeper.KeeperException.create(KeeperException.java:110) at org.apache.zookeeper.KeeperException.create(KeeperException.java:42) at org.apache.zookeeper.ZooKeeper.create(ZooKeeper.java:643) at org.I0Itec.zkclient.ZkConnection.create(ZkConnection.java:87) at org.I0Itec.zkclient.ZkClient$1.call(ZkClient.java:308) at org.I0Itec.zkclient.ZkClient$1.call(ZkClient.java:304) at org.I0Itec.zkclient.ZkClient.retryUntilConnected(ZkClient.java:675) ... 7 more -Chris George
