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https://issues.apache.org/jira/browse/KAFKA-10140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17809511#comment-17809511
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Ismael Juma commented on KAFKA-10140:
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[~chia7712] That makes sense to me.
> Incremental config api excludes plugin config changes
> -----------------------------------------------------
>
> Key: KAFKA-10140
> URL: https://issues.apache.org/jira/browse/KAFKA-10140
> Project: Kafka
> Issue Type: Bug
> Reporter: Jason Gustafson
> Priority: Critical
>
> I was trying to alter the jmx metric filters using the incremental alter
> config api and hit this error:
> {code:java}
> java.util.NoSuchElementException: key not found: metrics.jmx.blacklist
> at scala.collection.MapLike.default(MapLike.scala:235)
> at scala.collection.MapLike.default$(MapLike.scala:234)
> at scala.collection.AbstractMap.default(Map.scala:65)
> at scala.collection.MapLike.apply(MapLike.scala:144)
> at scala.collection.MapLike.apply$(MapLike.scala:143)
> at scala.collection.AbstractMap.apply(Map.scala:65)
> at kafka.server.AdminManager.listType$1(AdminManager.scala:681)
> at
> kafka.server.AdminManager.$anonfun$prepareIncrementalConfigs$1(AdminManager.scala:693)
> at kafka.server.AdminManager.prepareIncrementalConfigs(AdminManager.scala:687)
> at
> kafka.server.AdminManager.$anonfun$incrementalAlterConfigs$1(AdminManager.scala:618)
> at scala.collection.TraversableLike.$anonfun$map$1(TraversableLike.scala:273)
> at scala.collection.immutable.Map$Map1.foreach(Map.scala:154)
> at scala.collection.TraversableLike.map(TraversableLike.scala:273)
> at scala.collection.TraversableLike.map$(TraversableLike.scala:266)
> at scala.collection.AbstractTraversable.map(Traversable.scala:108)
> at kafka.server.AdminManager.incrementalAlterConfigs(AdminManager.scala:589)
> at
> kafka.server.KafkaApis.handleIncrementalAlterConfigsRequest(KafkaApis.scala:2698)
> at kafka.server.KafkaApis.handle(KafkaApis.scala:188)
> at kafka.server.KafkaRequestHandler.run(KafkaRequestHandler.scala:78)
> at java.base/java.lang.Thread.run(Thread.java:834) {code}
> It looks like we are only allowing changes to the keys defined in
> `KafkaConfig` through this API. This excludes config changes to any plugin
> components such as `JmxReporter`.
> Note that I was able to use the regular `alterConfig` API to change this
> config.
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