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Posted to users@nifi.apache.org by jgunvaldson <jg...@cox.net> on 2020/10/08 17:34:57 UTC
Disable Controller Service - Cause NIFI Node(s) in Cluster to
Disconnect and Reconnect
Powered by Apache NiFi Version 1.9.0
1.9.0.3.4.1.1-4 built 05/01/2019 02:15:30 UTC
Tagged nifi-1.9.0-RC2
6 Node Cluster
~~
This is a long shot, but I have developers reporting an inability to disable a “AvroSchemaRegistry” controller service without a couple of the Cluster nodes disconnecting and reconnecting, throwing the error
“Cluster is unable to service request to change flow: 2 Nodes are currently connecting”
Controller remains alive/active and is not disabled
Nodes come back and remain connected
I have noticed disabled, stopped and active processors using this Controller Service that they would like to disable (which would render those components invalid I would assume - if process to disable was successful)
Ever heard of this symptom?
Thanks for any ideas
John
Re: Disable Controller Service - Cause NIFI Node(s) in Cluster to
Disconnect and Reconnect
Posted by jgunvaldson <jg...@cox.net>.
We are considering a maintenance window to shutdown and copy known stable node flow.xml.gz to all the other nodes and restart as a first step
Two nodes dropping out may be to missing references in Controller Service that may be fixed by flow.xml updates
It’s an idea?
John
> On Oct 8, 2020, at 10:34 AM, jgunvaldson <jg...@cox.net> wrote:
>
> Powered by Apache NiFi Version 1.9.0
> 1.9.0.3.4.1.1-4 built 05/01/2019 02:15:30 UTC
> Tagged nifi-1.9.0-RC2
> 6 Node Cluster
>
> ~~
>
> This is a long shot, but I have developers reporting an inability to disable a “AvroSchemaRegistry” controller service without a couple of the Cluster nodes disconnecting and reconnecting, throwing the error
>
> “Cluster is unable to service request to change flow: 2 Nodes are currently connecting”
>
> Controller remains alive/active and is not disabled
>
> Nodes come back and remain connected
>
> I have noticed disabled, stopped and active processors using this Controller Service that they would like to disable (which would render those components invalid I would assume - if process to disable was successful)
>
> Ever heard of this symptom?
>
>
> Thanks for any ideas
>
> John
>