Hong Liang Teoh created FLINK-32619:
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Summary: 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: 1.17.1, 1.16.2
Reporter: Hong Liang Teoh
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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