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From "Joe Witt (Jira)" <j...@apache.org>
Subject [jira] [Resolved] (NIFI-6875) Nifi Zookeeper Cluster_Mode broken in 1.10.0
Date Fri, 28 Feb 2020 19:43:00 GMT

     [ https://issues.apache.org/jira/browse/NIFI-6875?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Joe Witt resolved NIFI-6875.
----------------------------
    Resolution: Information Provided

> Nifi Zookeeper Cluster_Mode broken in 1.10.0
> --------------------------------------------
>
>                 Key: NIFI-6875
>                 URL: https://issues.apache.org/jira/browse/NIFI-6875
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Core Framework, Flow Versioning
>    Affects Versions: 1.10.0
>         Environment: Kubernetes, Linux
>            Reporter: Glenn Wolfe
>            Priority: Blocker
>              Labels: bug, cluster-mode, kubernetes
>
> Expected: Exact same configuration and setup works perfectly on prior version (1.9.2),
as soon as I upgrade version, NIfi is unable to initialize.  
>  
> With external zookeeper (cluster_mode) configuration, Nifi is unable to successfully
elect leader and stuck in 'Invalid State: The Flow Controller is initializing the Data Flow'. 
>  
> Logs: (Stuck in Loop)
> ```
> 2019-11-15 17:00:05,991 INFO [main-EventThread] o.a.c.f.state.ConnectionStateManager
State change: RECONNECTED
> 2019-11-15 17:00:05,991 INFO [Curator-ConnectionStateManager-0] o.a.n.c.l.e.CuratorLeaderElectionManager
org.apache.nifi.controller.leader.election.CuratorLeaderElectionManager$ElectionListener@256c961a
Connection State changed to RECONNECTED
> 2019-11-15 17:00:06,092 INFO [main-EventThread] o.a.c.f.state.ConnectionStateManager
State change: SUSPENDED
> 2019-11-15 17:00:06,092 WARN [main] o.a.nifi.controller.StandardFlowService There is
currently no Cluster Coordinator. This often happens upon restart of NiFi when running an
embedded ZooKeeper. Will register this node to become the active Cluster Coordinator and will
attempt to connect to cluster again
> 2019-11-15 17:00:06,093 INFO [main] o.a.n.c.l.e.CuratorLeaderElectionManager CuratorLeaderElectionManager[stopped=false]
Attempted to register Leader Election for role 'Cluster Coordinator' but this role is already
registered
> ```



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