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https://issues.apache.org/jira/browse/NIFI-6875?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17029152#comment-17029152
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Joe Witt commented on NIFI-6875:
--------------------------------
[~daniel.a] You could rebuild with the zookeeper/curator commit reverted. But
from a community point of view/CVE perspective we had to move forward with it.
> 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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