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Posted to dev@flink.apache.org by "SwathiChandrashekar (Jira)" <ji...@apache.org> on 2022/12/11 12:20:00 UTC

[jira] [Created] (FLINK-30361) Flink cluster deleted while updating the replicas

SwathiChandrashekar created FLINK-30361:
-------------------------------------------

             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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