[KAFKA-10140] Incremental config api excludes plugin config changes

• Type: Bug
• Status: Reopened
• Priority: Critical
• Resolution: Unresolved
• Assignee: Unassigned
• Reporter: Jason Gustafson
• Created: 10/Jun/20 19:00
• Updated: 24/Jan/24 07:36

Description

I was trying to alter the jmx metric filters using the incremental alter config api and hit this error:

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) 

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.