[jira] [Created] (FLINK-29206) Default Flink configuration contains irrelevant settings

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

Arseniy Tashoyan created FLINK-29206:
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             Summary: Default Flink configuration contains irrelevant settings
                 Key: FLINK-29206
                 URL: https://issues.apache.org/jira/browse/FLINK-29206
             Project: Flink
          Issue Type: Bug
          Components: Kubernetes Operator
    Affects Versions: 1.15.2
            Reporter: Arseniy Tashoyan


The default configuration of a FlinkDeployment contains the following settings:
{code:yaml}
kubernetes.operator.metrics.reporter.slf4j.interval: 5 MINUTE
kubernetes.operator.metrics.reporter.slf4j.factory.class: org.apache.flink.metrics.slf4j.Slf4jReporterFactory
kubernetes.operator.reconcile.interval: 15 s
kubernetes.operator.observer.progress-check.interval: 5 s
{code}
 
These settings are specific to Flink Kubernetes Operator itself, but not to Flink applications that the Operator runs. Although these settings most probably do not make any influence on a Flink application (they are just ignored), but the configuration is misleading. It would be better to remove these settings from the default configuration of a Flink application.

Actually these settings come from the _defaultConfiguration_ section of the file {_}helm/flink-kubernetes-operator/values.yaml{_}:
{code:yaml}
defaultConfiguration:   ...
  flink-conf.yaml: |+
    # TODO Remove these Operator-specific settings - they are irrelevant to Flink apps
    kubernetes.operator.metrics.reporter.slf4j.factory.class: org.apache.flink.metrics.slf4j.Slf4jReporterFactory
    kubernetes.operator.metrics.reporter.slf4j.interval: 5 MINUTE
    kubernetes.operator.reconcile.interval: 15 s
    kubernetes.operator.observer.progress-check.interval: 5 s
{code}
This piece of configuration is misleading - is it the configuration of the Operator itself or the configuration of applications started by the Operator?



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