After 3.4.14 version upgrade i am seeing continuous messages as bellow in logs, is it normal?
2019-12-11 22:12:44,036 [myid:104] - INFO [WorkerReceiver[myid=104]:FastLeaderElection@595] - Notification: 0 (message format version), 100 (n.leader), 0x0 (n.zxid), 0x1 (n.round), LOOKING (n.state), 100 (n.sid), 0x0 (n.peerEpoch) OBSERVING (my state) 2019-12-11 22:12:44,108 [myid:104] - INFO [WorkerReceiver[myid=104]:FastLeaderElection@595] - Notification: 0 (message format version), 100 (n.leader), 0x0 (n.zxid), 0x1 (n.round), LOOKING (n.state), 100 (n.sid), 0x0 (n.peerEpoch) OBSERVING (my state) 2019-12-11 22:12:44,180 [myid:104] - INFO [WorkerReceiver[myid=104]:FastLeaderElection@595] - Notification: 0 (message format version), 100 (n.leader), 0x0 (n.zxid), 0x1 (n.round), LOOKING (n.state), 100 (n.sid), 0x0 (n.peerEpoch) OBSERVING (my state) 2019-12-11 22:12:44,252 [myid:104] - INFO [WorkerReceiver[myid=104]:FastLeaderElection@595] - Notification: 0 (message format version), 100 (n.leader), 0x0 (n.zxid), 0x1 (n.round), LOOKING (n.state), 100 (n.sid), 0x0 (n.peerEpoch) OBSERVING (my state) 2019-12-11 22:12:44,323 [myid:104] - INFO [WorkerReceiver[myid=104]:FastLeaderElection@595] - Notification: 0 (message format version), 100 (n.leader), 0x0 (n.zxid), 0x1 (n.round), LOOKING (n.state), 100 (n.sid), 0x0 (n.peerEpoch) OBSERVING (my state) 2019-12-11 22:12:44,395 [myid:104] - INFO [WorkerReceiver[myid=104]:FastLeaderElection@595] - Notification: 0 (message format version), 100 (n.leader), 0x0 (n.zxid), 0x1 (n.round), LOOKING (n.state), 100 (n.sid), 0x0 (n.peerEpoch) OBSERVING (my state) 2019-12-11 22:12:44,467 [myid:104] - INFO [WorkerReceiver[myid=104]:FastLeaderElection@595] - Notification: 0 (message format version), 100 (n.leader), 0x0 (n.zxid), 0x1 (n.round), LOOKING (n.state), 100 (n.sid), 0x0 (n.peerEpoch) OBSERVING (my state) 2019-12-11 22:12:44,538 [myid:104] - INFO [WorkerReceiver[myid=104]:FastLeaderElection@595] - Notification: 0 (message format version), 100 (n.leader), 0x0 (n.zxid), 0x1 (n.round), LOOKING (n.state), 100 (n.sid), 0x0 (n.peerEpoch) OBSERVING (my state) 2019-12-11 22:12:44,610 [myid:104] - INFO [WorkerReceiver[myid=104]:FastLeaderElection@595] - Notification: 0 (message format version), 100 (n.leader), 0x0 (n.zxid), 0x1 (n.round), LOOKING (n.state), 100 (n.sid), 0x0 (n.peerEpoch) OBSERVING (my state) 2019-12-11 22:12:44,682 [myid:104] - INFO [WorkerReceiver[myid=104]:FastLeaderElection@595] - Notification: 0 (message format version), 100 (n.leader), 0x0 (n.zxid), 0x1 (n.round), LOOKING (n.state), 100 (n.sid), 0x0 (n.peerEpoch) OBSERVING (my state) 2019-12-11 22:12:44,754 [myid:104] - INFO [WorkerReceiver[myid=104]:FastLeaderElection@595] - Notification: 0 (message format version), 100 (n.leader), 0x0 (n.zxid), 0x1 (n.round), LOOKING (n.state), 100 (n.sid), 0x0 (n.peerEpoch) OBSERVING (my state) 2019-12-11 22:12:44,825 [myid:104] - INFO [WorkerReceiver[myid=104]:FastLeaderElection@595] - Notification: 0 (message format version), 100 (n.leader), 0x0 (n.zxid), 0x1 (n.round), LOOKING (n.state), 100 (n.sid), 0x0 (n.peerEpoch) OBSERVING (my state) 2019-12-11 22:12:44,897 [myid:104] - INFO [WorkerReceiver[myid=104]:FastLeaderElection@595] - Notification: 0 (message format version), 100 (n.leader), 0x0 (n.zxid), 0x1 (n.round), LOOKING (n.state), 100 (n.sid), 0x0 (n.peerEpoch) OBSERVING (my state) 2019-12-11 22:12:44,969 [myid:104] - INFO [WorkerReceiver[myid=104]:FastLeaderElection@595] - Notification: 0 (message format version), 100 (n.leader), 0x0 (n.zxid), 0x1 (n.round), LOOKING (n.state), 100 (n.sid), 0x0 (n.peerEpoch) OBSERVING (my state) 2019-12-11 22:12:45,041 [myid:104] - INFO [WorkerReceiver[myid=104]:FastLeaderElection@595] - Notification: 0 (message format version), 100 (n.leader), 0x0 (n.zxid), 0x1 (n.round), LOOKING (n.state), 100 (n.sid), 0x0 (n.peerEpoch) OBSERVING (my state) 2019-12-11 22:12:45,112 [myid:104] - INFO [WorkerReceiver[myid=104]:FastLeaderElection@595] - Notification: 0 (message format version), 100 (n.leader), 0x0 (n.zxid), 0x1 (n.round), LOOKING (n.state), 100 (n.sid), 0x0 (n.peerEpoch) OBSERVING (my state) 2019-12-11 22:12:45,184 [myid:104] - INFO [WorkerReceiver[myid=104]:FastLeaderElection@595] - Notification: 0 (message format version), 100 (n.leader), 0x0 (n.zxid), 0x1 (n.round), LOOKING (n.state), 100 (n.sid), 0x0 (n.peerEpoch) OBSERVING (my state) 2019-12-11 22:12:45,256 [myid:104] - INFO [WorkerReceiver[myid=104]:FastLeaderElection@595] - Notification: 0 (message format version), 100 (n.leader), 0x0 (n.zxid), 0x1 (n.round), LOOKING (n.state), 100 (n.sid), 0x0 (n.peerEpoch) OBSERVING (my state) But status looks ok though. echo mntr |nc localhost 2181 zk_version 3.4.14-4c25d480e66aadd371de8bd2fd8da255ac140bcf, built on 03/06/2019 16:18 GMT zk_avg_latency 75 zk_max_latency 76 zk_min_latency 75 zk_packets_received 907 zk_packets_sent 906 zk_num_alive_connections 1 zk_outstanding_requests 0 zk_server_state observer zk_znode_count 12168170 zk_watch_count 0 zk_ephemerals_count 0 zk_approximate_data_size 1592831251 zk_open_file_descriptor_count 40 zk_max_file_descriptor_count 100000 zk_fsync_threshold_exceed_count 0 Thanks, Ram