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Posted to commits@flink.apache.org by GitBox <gi...@apache.org> on 2022/03/25 10:23:43 UTC
[GitHub] [flink-kubernetes-operator] bgeng777 opened a new pull request #111: [FLINK-26825] Document State Machine Graph for JM Deployment
bgeng777 opened a new pull request #111:
URL: https://github.com/apache/flink-kubernetes-operator/pull/111
- Add State Machine Graph for JM Deployment and document the meaning of each possible transition.
- The graph is attached here:
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[GitHub] [flink-kubernetes-operator] mbalassi commented on a change in pull request #111: [FLINK-26825] Document State Machine Graph for JM Deployment
Posted by GitBox <gi...@apache.org>.
mbalassi commented on a change in pull request #111:
URL: https://github.com/apache/flink-kubernetes-operator/pull/111#discussion_r835231724
##########
File path: docs/content/docs/concepts/architecture.md
##########
@@ -45,6 +45,25 @@ The CR can be (re)applied on the cluster any time. The Operator makes continuous
The Operator is built with the [Java Operator SDK](https://github.com/java-operator-sdk/java-operator-sdk) and uses the [Native Kubernetes Integration](https://nightlies.apache.org/flink/flink-docs-master/docs/deployment/resource-providers/native_kubernetes/) for launching Flink deployments and submitting jobs under the hood. The Java Operator SDK is a higher level framework and related tooling to support writing Kubernetes Operators in Java. Both the Java Operator SDK and Flink's native kubernetes integration itself is using the [Fabric8 Kubernetes Client](https://github.com/fabric8io/kubernetes-client) to interact with the Kubernetes API Server.
+## State Machine of JobManager Deployment
+The Operator will manage the lifecycle of JobManager Deployment. Its state machine is as follows:
Review comment:
nit: The Operator _manages_ the lifecycle of _the_ JobManager Deployment
##########
File path: docs/content/docs/concepts/architecture.md
##########
@@ -45,6 +45,25 @@ The CR can be (re)applied on the cluster any time. The Operator makes continuous
The Operator is built with the [Java Operator SDK](https://github.com/java-operator-sdk/java-operator-sdk) and uses the [Native Kubernetes Integration](https://nightlies.apache.org/flink/flink-docs-master/docs/deployment/resource-providers/native_kubernetes/) for launching Flink deployments and submitting jobs under the hood. The Java Operator SDK is a higher level framework and related tooling to support writing Kubernetes Operators in Java. Both the Java Operator SDK and Flink's native kubernetes integration itself is using the [Fabric8 Kubernetes Client](https://github.com/fabric8io/kubernetes-client) to interact with the Kubernetes API Server.
+## State Machine of JobManager Deployment
+The Operator will manage the lifecycle of JobManager Deployment. Its state machine is as follows:
+
+{{< img src="/img/concepts/JM_deployment_state_machine.svg" alt="State Machine of JobManager Deployment" >}}
+
+The possible transitions usually indicate that there are some underlying changes:
+
+1. `MISSING` -> `DEPLOYING`: A new JM deployment exists and is being created
+2. `DEPLOYING` -> `DEPLOYED_NOT_READY`: The JM deployment exists and pass checks of the availability of replicas and JM port connectivity. Now, it is waiting the REST service to be ready
Review comment:
nit: ... and _passes the JM availability and connectivity checks_
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[GitHub] [flink-kubernetes-operator] gyfora merged pull request #111: [FLINK-26825] Document State Machine Graph for JM Deployment
Posted by GitBox <gi...@apache.org>.
gyfora merged pull request #111:
URL: https://github.com/apache/flink-kubernetes-operator/pull/111
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