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https://issues.apache.org/jira/browse/FLINK-32619?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hong Liang Teoh resolved FLINK-32619.
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Resolution: Not A Problem
> ConfigOptions to support fallback configuration
> -----------------------------------------------
>
> Key: FLINK-32619
> URL: https://issues.apache.org/jira/browse/FLINK-32619
> Project: Flink
> Issue Type: Technical Debt
> Components: Runtime / Configuration
> Affects Versions: 1.16.2, 1.17.1
> Reporter: Hong Liang Teoh
> Priority: Minor
>
> ConfigOptions has no option to specify a "fallback configuration" as the
> default.
>
> For example, if we want {{rest.cache.checkpoint-statistics.timeout}} to
> fallback to web.refresh-interval instead of a static default value, we have
> to specify
>
> {code:java}
> @Documentation.OverrideDefault("web.refresh-interval")
> @Documentation.Section(Documentation.Sections.EXPERT_REST)
> public static final ConfigOption<Duration>
> CACHE_CHECKPOINT_STATISTICS_TIMEOUT =
> key("rest.cache.checkpoint-statistics.timeout")
> .durationType()
> .noDefaultValue()
> .withDescription(
> "....");
> {code}
>
>
> The {{.noDefault()}} is misleading as it actually has a default.
>
> We should introduce a {{.fallbackConfiguration()}} that is handled gracefully
> by doc generators.
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