[jira] [Created] (FLINK-26356) Revisit the create of RestClusterClient

["Aitozi (Jira)" <ji...@apache.org>]

Aitozi created FLINK-26356:
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             Summary: Revisit the create of RestClusterClient
                 Key: FLINK-26356
                 URL: https://issues.apache.org/jira/browse/FLINK-26356
             Project: Flink
          Issue Type: Sub-task
          Components: Kubernetes Operator
            Reporter: Aitozi


The clusterClient is built as below. The config is mixed up with the FlinkDeploymentSpec and local default config. 
{code:java}
final int port = config.getInteger(RestOptions.PORT);
final String host =
        config.getString(
                RestOptions.ADDRESS, String.format("%s-rest.%s", clusterId, namespace));
final String restServerAddress = String.format("http://%s:%s", host, port); {code}
But the {{RestOptions.ADDRESS}} is generated at the entrypoint when the HA is enabled, so the option can not obtain from the FlinkDeploymentSpec.

Furthermore, the default rest url is not suitable for all the service type. I think we should extract the rest endpoint from the Flink external service.

One more concern is that, if the operator manage the multiple namespace, the rest url of \{{serviceName.namespace}} may not enough, it can not access across the namespace. 



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