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https://issues.apache.org/jira/browse/KAFKA-3237?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ewen Cheslack-Postava updated KAFKA-3237:
-----------------------------------------
Assignee: Jeremy Custenborder
> ConfigDef validators require a default value
> --------------------------------------------
>
> Key: KAFKA-3237
> URL: https://issues.apache.org/jira/browse/KAFKA-3237
> Project: Kafka
> Issue Type: Bug
> Components: config
> Affects Versions: 0.9.0.0
> Reporter: Jeremy Custenborder
> Assignee: Jeremy Custenborder
> Priority: Minor
> Fix For: 0.10.0.0
>
>
> I should be able to add a ConfigDef that has a validator but does has null as
> the default value. This would allow me to have a required property that is
> restricted to certain strings in this example. This exception should be
> thrown upon call to ConfigDef.parse instead.
> {code}
> ConfigDef def = new ConfigDef();
> def.define(key, Type.STRING, null, ValidString.in("ONE", "TWO", "THREE"),
> Importance.HIGH, "docs");
> {code}
> {code}
> Invalid value null for configuration test: String must be one of: ONE, TWO,
> THREE
> org.apache.kafka.common.config.ConfigException: Invalid value null for
> configuration enum_test: String must be one of: ONE, TWO, THREE
> at
> org.apache.kafka.common.config.ConfigDef$ValidString.ensureValid(ConfigDef.java:349)
> at
> org.apache.kafka.common.config.ConfigDef$ConfigKey.<init>(ConfigDef.java:375)
> {code}
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