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https://issues.apache.org/jira/browse/KAFKA-20129?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18056734#comment-18056734
]
Chia-Ping Tsai commented on KAFKA-20129:
----------------------------------------
the error can be reproduced by this test code
{code:java}
@ClusterTest(types = {Type.KRAFT})
public void test(ClusterInstance cluster) throws ExecutionException,
InterruptedException {
try (var admin = cluster.admin()) {
admin.incrementalAlterConfigs(Map.of(new
ConfigResource(ConfigResource.Type.BROKER, "0"), List.of(new AlterConfigOp(
new ConfigEntry("laaaate", "1000"),
AlterConfigOp.OpType.APPEND)))).all().get();
}
}{code}
> Server error caused by appending/subtracting a non-existent config key
> ----------------------------------------------------------------------
>
> Key: KAFKA-20129
> URL: https://issues.apache.org/jira/browse/KAFKA-20129
> Project: Kafka
> Issue Type: Bug
> Reporter: Chia-Ping Tsai
> Assignee: Chia-Ping Tsai
> Priority: Minor
>
> {code:java}
> def listType(configName: String, configKeys: Map[String, ConfigKey]):
> Boolean = {
> val configKey = configKeys(configName) // <-- root cause
> if (configKey == null)
> throw new InvalidConfigurationException(s"Unknown config name:
> $configName")
> configKey.`type` == ConfigDef.Type.LIST
> }
> {code}
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