wangyang0918 commented on a change in pull request #15480:
URL: https://github.com/apache/flink/pull/15480#discussion_r607715665
##########
File path:
flink-kubernetes/src/main/java/org/apache/flink/kubernetes/kubeclient/FlinkKubeClientFactory.java
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@@ -92,13 +94,32 @@ public FlinkKubeClient fromConfiguration(Configuration
flinkConfig, String useCa
LOG.debug("Setting namespace of Kubernetes client to {}", namespace);
config.setNamespace(namespace);
+ // This could be removed after we bump the fabric8 Kubernetes client
version to 4.13.0+ or
+ // use the a shared connection for all ConfigMap watches. See
FLINK-22006 for more
+ // information.
+ trySetMaxConcurrentRequest(config);
+
final NamespacedKubernetesClient client = new
DefaultKubernetesClient(config);
final int poolSize =
flinkConfig.get(KubernetesConfigOptions.KUBERNETES_CLIENT_IO_EXECUTOR_POOL_SIZE);
return new Fabric8FlinkKubeClient(
flinkConfig, client, createThreadPoolForAsyncIO(poolSize,
useCase));
}
+ @VisibleForTesting
+ static void trySetMaxConcurrentRequest(Config config) {
+ final String configuredMaxConcurrentRequests =
+ Utils.getSystemPropertyOrEnvVar(
+ Config.KUBERNETES_MAX_CONCURRENT_REQUESTS,
+
String.valueOf(Config.DEFAULT_MAX_CONCURRENT_REQUESTS));
Review comment:
Since fabric8 kubernetes-client provides many internal advanced
configuration properties[1], I do not want to introduce such a special case for
`kubernetes.max.concurrent.requests`. If you think it is a problem that we do
not have the documentation, maybe we could add a section in
`native_kubernetes.md#Flink on Kubernetes Reference`
[1].
https://github.com/fabric8io/kubernetes-client/blob/v4.9.2/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/Config.java#L65
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