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https://issues.apache.org/jira/browse/KAFKA-13256?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mickael Maison reassigned KAFKA-13256:
--------------------------------------
Assignee: René Kerner
> Possible NPE in ConfigDef when rendering (enriched) RST or HTML when
> documentation is not set/NULL
> --------------------------------------------------------------------------------------------------
>
> Key: KAFKA-13256
> URL: https://issues.apache.org/jira/browse/KAFKA-13256
> Project: Kafka
> Issue Type: Bug
> Components: clients
> Affects Versions: 2.8.0
> Reporter: René Kerner
> Assignee: René Kerner
> Priority: Major
> Original Estimate: 0.5h
> Remaining Estimate: 0.5h
>
> While working on Debezium I discovered the following issue:
> When Kafka's ConfigDef renders the HTML or RST documentation representation
> of the config definition, it requires `ConfigKey.documentation` member
> variable to be a java.lang.String instance that's set to an actual value
> different than NULL, else NPE happens:
> {code:java}
> b.append(key.documentation.replaceAll("\n", "<br>"));
> {code}
> {code:java}
> for (String docLine : key.documentation.split("\n")) {
> {code}
>
> When `documentation` is not set/NULL I suggest to either set a valid String
> like "No documentation available" or skip that config key.
>
> I could provide a PR to fix this soon.
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