Kamal Chandraprakash created KAFKA-19131: --------------------------------------------
Summary: Exception thrown while updating the RemoteLogReader threads Key: KAFKA-19131 URL: https://issues.apache.org/jira/browse/KAFKA-19131 Project: Kafka Issue Type: Task Reporter: Kamal Chandraprakash RemoteLogManager throws error when increasing the thread count for remote reads. Command: {noformat} % sh kafka-configs.sh --bootstrap-server localhost:9092 --broker-defaults --add-config remote.log.reader.threads=15 --alter Completed updating default config for brokers in the cluster. {noformat} Exception: {noformat} [2025-04-12 12:33:19,984] INFO Updating remote reader thread pool size from 10 to 15 (kafka.log.remote.RemoteLogManager) [2025-04-12 12:33:19,984] ERROR Cluster default configs could not be applied: java.util.Collections$3@7c655173 (kafka.server.DynamicBrokerConfig) java.lang.IllegalArgumentException: null at java.base/java.util.concurrent.ThreadPoolExecutor.setCorePoolSize(ThreadPoolExecutor.java:1562) ~[?:?] at kafka.log.remote.RemoteLogManager.resizeReaderThreadPool(RemoteLogManager.java:304) ~[kafka_2.13-4.1.0-SNAPSHOT.jar:?] at kafka.server.DynamicRemoteLogConfig.reconfigure(DynamicBrokerConfig.scala:1076) ~[kafka_2.13-4.1.0-SNAPSHOT.jar:?] at kafka.server.DynamicBrokerConfig.$anonfun$updateCurrentConfig$1(DynamicBrokerConfig.scala:534) ~[kafka_2.13-4.1.0-SNAPSHOT.jar:?] at kafka.server.DynamicBrokerConfig.$anonfun$updateCurrentConfig$1$adapted(DynamicBrokerConfig.scala:534) ~[kafka_2.13-4.1.0-SNAPSHOT.jar:?] at scala.collection.immutable.List.foreach(List.scala:334) ~[scala-library-2.13.15.jar:?] at kafka.server.DynamicBrokerConfig.updateCurrentConfig(DynamicBrokerConfig.scala:534) ~[kafka_2.13-4.1.0-SNAPSHOT.jar:?] at kafka.server.DynamicBrokerConfig.$anonfun$updateDefaultConfig$1(DynamicBrokerConfig.scala:385) ~[kafka_2.13-4.1.0-SNAPSHOT.jar:?] at kafka.server.DynamicBrokerConfig.updateDefaultConfig(DynamicBrokerConfig.scala:381) ~[kafka_2.13-4.1.0-SNAPSHOT.jar:?] at kafka.server.BrokerConfigHandler.processConfigChanges(ConfigHandler.scala:149) ~[kafka_2.13-4.1.0-SNAPSHOT.jar:?] at kafka.server.metadata.DynamicConfigPublisher.$anonfun$onMetadataUpdate$5(DynamicConfigPublisher.scala:81) ~[kafka_2.13-4.1.0-SNAPSHOT.jar:?] at scala.Option.foreach(Option.scala:437) ~[scala-library-2.13.15.jar:?] at kafka.server.metadata.DynamicConfigPublisher.$anonfun$onMetadataUpdate$2(DynamicConfigPublisher.scala:74) ~[kafka_2.13-4.1.0-SNAPSHOT.jar:?] at java.base/java.util.HashMap$KeySet.forEach(HashMap.java:1017) ~[?:?] at kafka.server.metadata.DynamicConfigPublisher.$anonfun$onMetadataUpdate$1(DynamicConfigPublisher.scala:57) ~[kafka_2.13-4.1.0-SNAPSHOT.jar:?] at kafka.server.metadata.DynamicConfigPublisher.$anonfun$onMetadataUpdate$1$adapted(DynamicConfigPublisher.scala:56) ~[kafka_2.13-4.1.0-SNAPSHOT.jar:?] at scala.Option.foreach(Option.scala:437) ~[scala-library-2.13.15.jar:?] at kafka.server.metadata.DynamicConfigPublisher.onMetadataUpdate(DynamicConfigPublisher.scala:56) ~[kafka_2.13-4.1.0-SNAPSHOT.jar:?] at kafka.server.metadata.BrokerMetadataPublisher.onMetadataUpdate(BrokerMetadataPublisher.scala:200) ~[kafka_2.13-4.1.0-SNAPSHOT.jar:?] at org.apache.kafka.image.loader.MetadataLoader.maybePublishMetadata(MetadataLoader.java:340) ~[kafka-metadata-4.1.0-SNAPSHOT.jar:?] at org.apache.kafka.image.loader.MetadataBatchLoader.applyDeltaAndUpdate(MetadataBatchLoader.java:275) ~[kafka-metadata-4.1.0-SNAPSHOT.jar:?] at org.apache.kafka.image.loader.MetadataBatchLoader.maybeFlushBatches(MetadataBatchLoader.java:211) ~[kafka-metadata-4.1.0-SNAPSHOT.jar:?] at org.apache.kafka.image.loader.MetadataLoader.lambda$handleCommit$1(MetadataLoader.java:364) ~[kafka-metadata-4.1.0-SNAPSHOT.jar:?] at org.apache.kafka.queue.KafkaEventQueue$EventContext.run(KafkaEventQueue.java:132) ~[kafka-server-common-4.1.0-SNAPSHOT.jar:?] at org.apache.kafka.queue.KafkaEventQueue$EventHandler.handleEvents(KafkaEventQueue.java:215) ~[kafka-server-common-4.1.0-SNAPSHOT.jar:?] at org.apache.kafka.queue.KafkaEventQueue$EventHandler.run(KafkaEventQueue.java:186) ~[kafka-server-common-4.1.0-SNAPSHOT.jar:?] at java.base/java.lang.Thread.run(Thread.java:1575) [?:?] {noformat} https://sourcegraph.com/github.com/apache/kafka/-/blob/storage/src/main/java/org/apache/kafka/storage/internals/log/RemoteStorageThreadPool.java?L43 -- This message was sent by Atlassian Jira (v8.20.10#820010)