tillrohrmann commented on a change in pull request #10971:
[FLINK-15791][kubernetes] Use explicit I/O Executor for asynchronous operations
in Fabric8FlinkKubeClient
URL: https://github.com/apache/flink/pull/10971#discussion_r373479496
##########
File path:
flink-kubernetes/src/main/java/org/apache/flink/kubernetes/kubeclient/Fabric8FlinkKubeClient.java
##########
@@ -81,6 +85,8 @@
private final List<Decorator<Deployment, KubernetesDeployment>>
flinkMasterDeploymentDecorators = new ArrayList<>();
private final List<Decorator<Pod, KubernetesPod>>
taskManagerPodDecorators = new ArrayList<>();
+ private final ExecutorService executorService =
Executors.newFixedThreadPool(4, new
ExecutorThreadFactory("Flink-KubeClient-IO"));
Review comment:
Usually, a more flexible approach is to pass in an `Executor` to the
`Fabric8FlinkKubeClient`. Then an external component is responsible for the
management of the executor. However, on needs to make sure that the
`Fabric8FlinkKubeClient` does not live longer than the passed in `Executor`.
One could then for example also write a wrapper whose responsibility is the
management of the executor. This separates concerns better and it would give
one the opportunity to decide whether to create a dedicated thread pool or to
reuse an existing one.
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