Glenn Wolfe created NIFI-6875:
---------------------------------
Summary: 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
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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