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https://issues.apache.org/jira/browse/NIFI-7265?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Pierre Villard resolved NIFI-7265.
----------------------------------
    Resolution: Not A Problem

> [main-EventThread] o.a.c.f.state.ConnectionStateManager State change: 
> SUSPENDED and KeepeerError
> ------------------------------------------------------------------------------------------------
>
>                 Key: NIFI-7265
>                 URL: https://issues.apache.org/jira/browse/NIFI-7265
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Configuration Management, Core Framework
>    Affects Versions: 1.11.3
>            Reporter: Ganesh Banda
>            Priority: Critical
>              Labels: Linux, kubernetes
>
>   I am using Nifi 1.11.3 with external Zookeeper 5.3.6. Able to start the 
> Nifi in a cluster mode. When I made complete ZK down, Nifi throwing bellow 
> error and never join with the cluster. I need to restart the Nifi each node 
> to to form cluster back again. Could you please help here ? I think for the 
> production system restarting is not a good option I feel. Tried to increase 
> zookeeper timeout to high values but didn't worked.
> Logs:
> 2020-03-17 14:02:19,708 INFO [main-EventThread] 
> o.a.c.f.state.ConnectionStateManager State change: SUSPENDED
> 2020-03-17 14:02:19,709 INFO [Curator-ConnectionStateManager-0] 
> o.a.n.c.l.e.CuratorLeaderElectionManager 
> org.apache.nifi.controller.leader.election.CuratorLeaderElectionManager$ElectionListener@a032996
>  Connection State changed to SUSPENDED
> 2020-03-17 14:02:19,710 INFO [Curator-ConnectionStateManager-0] 
> o.a.n.c.l.e.CuratorLeaderElectionManager 
> org.apache.nifi.controller.leader.election.CuratorLeaderElectionManager$ElectionListener@e3cbc0e
>  Connection State changed to SUSPENDED
> .
> .
> .
> 2020-03-17 14:19:00,044 ERROR [Curator-Framework-0] 
> o.a.c.f.imps.CuratorFrameworkImpl Background operation retry gave up
> org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode 
> = ConnectionLoss
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:102)
> at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl.checkBackgroundRetry(CuratorFrameworkImpl.java:862)
> at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl.performBackgroundOperation(CuratorFrameworkImpl.java:990)
> at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl.backgroundOperationsLoop(CuratorFrameworkImpl.java:943)
> at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl.access$300(CuratorFrameworkImpl.java:66)
> at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl$4.call(CuratorFrameworkImpl.java:346)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at 
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
> at 
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
> at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> 2020-03-17 14:19:00,045 ERROR [Curator-Framework-0] 
> o.a.c.f.imps.CuratorFrameworkImpl Background retry gave up
> org.apache.curator.CuratorConnectionLossException: KeeperErrorCode = 
> ConnectionLoss
> at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl.performBackgroundOperation(CuratorFrameworkImpl.java:972)
> at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl.backgroundOperationsLoop(CuratorFrameworkImpl.java:943)
> at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl.access$300(CuratorFrameworkImpl.java:66)
> at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl$4.call(CuratorFrameworkImpl.java:346)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at 
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
> at 
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
> at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> 2020-03-17 14:19:00,098 ERROR [Curator-Framework-0] 
> o.a.c.f.imps.CuratorFrameworkImpl Background operation retry gave up
> org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode 
> = ConnectionLoss
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:102)
> at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl.checkBackgroundRetry(CuratorFrameworkImpl.java:862)
> at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl.performBackgroundOperation(CuratorFrameworkImpl.java:990)
> at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl.backgroundOperationsLoop(CuratorFrameworkImpl.java:943)
> at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl.access$300(CuratorFrameworkImpl.java:66)
> at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl$4.call(CuratorFrameworkImpl.java:346)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at 
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
> at 
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
> at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> 2020-03-17 14:19:00,098 ERROR [Curator-Framework-0] 
> o.a.c.f.imps.CuratorFrameworkImpl Background retry gave up
> org.apache.curator.CuratorConnectionLossException: KeeperErrorCode = 
> ConnectionLoss
> at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl.performBackgroundOperation(CuratorFrameworkImpl.java:972)
> at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl.backgroundOperationsLoop(CuratorFrameworkImpl.java:943)
> at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl.access$300(CuratorFrameworkImpl.java:66)
> at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl$4.call(CuratorFrameworkImpl.java:346)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at 
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
> at 
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
> at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)



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