Invalid cluster setup, missing znode path, Cluster structure is not set up for cluster

HI everyone, I’m using code from commit hash 70ac340 master branch. Now i setting

• 1 Controller with resource : 500m CPU , 1500m memory
• 4 Worker with resource : 100m CPU, 1000m memory

1 Controller & 3 Worker is good now, but the last Worker through this exception : Anyone explain clear for me?. @Technoboy- @yangy0000 do you know this ?

[2019-11-05 10:41:40,518] INFO Waiting for keeper state SyncConnected (org.I0Itec.zkclient.ZkClient:936)
[2019-11-05 10:41:40,518] INFO Handling new session, session id: 1062cda1558000f, instance: HelixMirrorMaker-1572950499885, instanceTye: PARTICIPANT, cluster: uReplicatorTEST, zkconnection: State:CONNECTED Timeout:30000 sessionid:0x1062cda1558000f local:/172.16.129.24:52794 remoteserver:10.100.3.101/10.100.3.101:2181 lastZxid:0 xid:1 sent:1 recv:1 queuedpkts:0 pendingresp:0 queuedevents:0 (org.apache.helix.manager.zk.ZKHelixManager:748)
[2019-11-05 10:41:40,518] WARN ParticipantHealthReportTimerTask already stopped (org.apache.helix.healthcheck.ParticipantHealthReportTask:67)
[2019-11-05 10:41:40,644] INFO Invalid cluster setup, missing znode path: /uReplicatorTEST/CONTROLLER
Invalid cluster setup, missing znode path: /uReplicatorTEST/CONTROLLER/MESSAGES
Invalid cluster setup, missing znode path: /uReplicatorTEST/CONTROLLER/ERRORS
Invalid cluster setup, missing znode path: /uReplicatorTEST/CONTROLLER/STATUSUPDATES
Invalid cluster setup, missing znode path: /uReplicatorTEST/CONTROLLER/HISTORY
 (org.apache.helix.manager.zk.ZKUtil:88)
2019-11-05T10:41:40.653+0000: Total time for which application threads were stopped: 0.0015168 seconds, Stopping threads took: 0.0000388 seconds
[2019-11-05 10:41:40,645] ERROR fail to createClient. (org.apache.helix.manager.zk.ZKHelixManager:496)
org.apache.helix.HelixException: Cluster structure is not set up for cluster: uReplicatorTEST
	at org.apache.helix.manager.zk.ZKHelixManager.handleNewSession(ZKHelixManager.java:861)
	at org.apache.helix.manager.zk.ZKHelixManager.createClient(ZKHelixManager.java:493)
	at org.apache.helix.manager.zk.ZKHelixManager.connect(ZKHelixManager.java:531)
	at kafka.mirrormaker.WorkerInstance.addToHelixController(WorkerInstance.scala:340)
	at kafka.mirrormaker.WorkerInstance.start(WorkerInstance.scala:250)
	at kafka.mirrormaker.MirrorMakerWorker.main(MirrorMakerWorker.scala:109)
	at com.uber.stream.kafka.mirrormaker.starter.MirrorMakerStarter.main(MirrorMakerStarter.java:44)
[2019-11-05 10:41:40,661] ERROR fail to connect HelixMirrorMaker-1572950499885 (org.apache.helix.manager.zk.ZKHelixManager:534)
org.apache.helix.HelixException: Cluster structure is not set up for cluster: uReplicatorTEST
	at org.apache.helix.manager.zk.ZKHelixManager.handleNewSession(ZKHelixManager.java:861)
	at org.apache.helix.manager.zk.ZKHelixManager.createClient(ZKHelixManager.java:493)
	at org.apache.helix.manager.zk.ZKHelixManager.connect(ZKHelixManager.java:531)
	at kafka.mirrormaker.WorkerInstance.addToHelixController(WorkerInstance.scala:340)
	at kafka.mirrormaker.WorkerInstance.start(WorkerInstance.scala:250)
	at kafka.mirrormaker.MirrorMakerWorker.main(MirrorMakerWorker.scala:109)
	at com.uber.stream.kafka.mirrormaker.starter.MirrorMakerStarter.main(MirrorMakerStarter.java:44)
[2019-11-05 10:41:40,687] INFO Is not shutting down; call cleanShutdown() (kafka.mirrormaker.WorkerInstance:66)
[2019-11-05 10:41:40,688] INFO Start clean shutdown. (kafka.mirrormaker.WorkerInstance:66)
[2019-11-05 10:41:40,692] INFO Flushing last batches and commit offsets. (kafka.mirrormaker.WorkerInstance:66)
[2019-11-05 10:41:40,692] INFO Flushing producer. (kafka.mirrormaker.WorkerInstance:66)
Exception in thread "main" java.lang.NullPointerException
	at kafka.mirrormaker.WorkerInstance.maybeFlushAndCommitOffsets(WorkerInstance.scala:346)
	at kafka.mirrormaker.WorkerInstance.cleanShutdown(WorkerInstance.scala:385)
	at kafka.mirrormaker.WorkerInstance$WorkerZKHelixManager.disconnect(WorkerInstance.scala:328)
	at org.apache.helix.manager.zk.ZKHelixManager.connect(ZKHelixManager.java:535)
	at kafka.mirrormaker.WorkerInstance.addToHelixController(WorkerInstance.scala:340)
	at kafka.mirrormaker.WorkerInstance.start(WorkerInstance.scala:250)
	at kafka.mirrormaker.MirrorMakerWorker.main(MirrorMakerWorker.scala:109)
	at com.uber.stream.kafka.mirrormaker.starter.MirrorMakerStarter.main(MirrorMakerStarter.java:44)
2019-11-05T10:41:41.654+0000: Total time for which application threads were stopped: 0.0003464 seconds, Stopping threads took: 0.0000637 seconds
2019-11-05T10:41:42.320+0000: Total time for which application threads were stopped: 0.0006129 seconds, Stopping threads took: 0.0000342 seconds
2019-11-05T10:41:43.325+0000: Total time for which application threads were stopped: 0.0001109 seconds, Stopping threads took: 0.0000327 seconds

[Technoboy-]

and using worker-3.0 is recommended

[Technoboy-]

restart the last worker can resolve the problem. the best order to start cluster : start controllers first, then workers。the controllers have the ability to setup the cluster info