SwathiChandrashekar created FLINK-30361:
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Summary: Flink cluster deleted while updating the replicas
Key: FLINK-30361
URL: https://issues.apache.org/jira/browse/FLINK-30361
Project: Flink
Issue Type: Bug
Components: Kubernetes Operator
Affects Versions: kubernetes-operator-1.2.0
Reporter: SwathiChandrashekar
Whenever we try to update the replicas of the task manager for a flink
standalone cluster using the flink CR, any change in CR triggers a redeploy of
the flink cluster ( delete + create of all the components - JM and TM ).
This might not be required for replica update and this should not affect the
existing pods and only a new TM pod will added during a scale up and a TM pod
should be deleted during a scale down.
Example tried --> Change the TM replicas from 2 to 3.
```
PS C:\Users\cswathi\Documents\hilo\flink-OSS-operator> kubectl get pods -w
NAME READY
STATUS RESTARTS AGE
basic-session-deployment-only-example-5dbbdf5dd8-cq8nb 0/1
ContainerCreating 0 1s
basic-session-deployment-only-example-taskmanager-77854fbb7vzvd 0/1
ContainerCreating 0 1s
basic-session-deployment-only-example-taskmanager-77854fbbg6vzs 0/1
ContainerCreating 0 1s
flink-kubernetes-operator-676897686f-5fc8r 2/2
Running 0 18m
basic-session-deployment-only-example-5dbbdf5dd8-cq8nb 1/1
Running 0 1s
basic-session-deployment-only-example-taskmanager-77854fbb7vzvd 1/1
Running 0 1s
basic-session-deployment-only-example-taskmanager-77854fbbg6vzs 1/1
Running 0 13s
basic-session-deployment-only-example-taskmanager-77854fbb7vzvd 1/1
Terminating 0 65s
basic-session-deployment-only-example-5dbbdf5dd8-cq8nb 1/1
Terminating 0 65s
basic-session-deployment-only-example-taskmanager-77854fbbg6vzs 1/1
Terminating 0 65s
basic-session-deployment-only-example-taskmanager-77854fbb7vzvd 1/1
Terminating 0 66s
basic-session-deployment-only-example-5dbbdf5dd8-cq8nb 1/1
Terminating 0 66s
basic-session-deployment-only-example-taskmanager-77854fbbg6vzs 1/1
Terminating 0 66s
basic-session-deployment-only-example-taskmanager-77854fbb7vzvd 0/1
Terminating 0 66s
basic-session-deployment-only-example-taskmanager-77854fbb7vzvd 0/1
Terminating 0 66s
basic-session-deployment-only-example-taskmanager-77854fbb7vzvd 0/1
Terminating 0 66s
basic-session-deployment-only-example-taskmanager-77854fbbg6vzs 0/1
Terminating 0 67s
basic-session-deployment-only-example-taskmanager-77854fbbg6vzs 0/1
Terminating 0 67s
basic-session-deployment-only-example-taskmanager-77854fbbg6vzs 0/1
Terminating 0 67s
basic-session-deployment-only-example-5dbbdf5dd8-cq8nb 0/1
Terminating 0 67s
basic-session-deployment-only-example-5dbbdf5dd8-cq8nb 0/1
Terminating 0 67s
basic-session-deployment-only-example-5dbbdf5dd8-cq8nb 0/1
Terminating 0 67s
basic-session-deployment-only-example-588474bf97-nng85 0/1
Pending 0 0s
basic-session-deployment-only-example-588474bf97-nng85 0/1
Pending 0 0s
basic-session-deployment-only-example-588474bf97-nng85 0/1
ContainerCreating 0 0s
basic-session-deployment-only-example-taskmanager-77854fbb5ddxv 0/1
Pending 0 0s
basic-session-deployment-only-example-taskmanager-77854fbb5ddxv 0/1
Pending 0 0s
basic-session-deployment-only-example-taskmanager-77854fbbrfgvz 0/1
Pending 0 0s
basic-session-deployment-only-example-taskmanager-77854fbb57v4t 0/1
Pending 0 0s
basic-session-deployment-only-example-taskmanager-77854fbbrfgvz 0/1
Pending 0 1s
basic-session-deployment-only-example-taskmanager-77854fbb57v4t 0/1
Pending 0 1s
basic-session-deployment-only-example-taskmanager-77854fbb5ddxv 0/1
ContainerCreating 0 1s
basic-session-deployment-only-example-taskmanager-77854fbbrfgvz 0/1
ContainerCreating 0 1s
basic-session-deployment-only-example-taskmanager-77854fbb57v4t 0/1
ContainerCreating 0 1s
basic-session-deployment-only-example-588474bf97-nng85 0/1
ContainerCreating 0 1s
basic-session-deployment-only-example-taskmanager-77854fbbrfgvz 0/1
ContainerCreating 0 1s
basic-session-deployment-only-example-taskmanager-77854fbb57v4t 0/1
ContainerCreating 0 1s
basic-session-deployment-only-example-taskmanager-77854fbb5ddxv 0/1
ContainerCreating 0 1s
basic-session-deployment-only-example-taskmanager-77854fbbrfgvz 1/1
Running 0 1s
basic-session-deployment-only-example-taskmanager-77854fbb5ddxv 1/1
Running 0 1s
basic-session-deployment-only-example-588474bf97-nng85 1/1
Running 0 2s
basic-session-deployment-only-example-taskmanager-77854fbb57v4t 1/1
Running 0 17s
```
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