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https://issues.apache.org/jira/browse/KAFKA-14980?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mickael Maison resolved KAFKA-14980.
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Resolution: Fixed
> MirrorMaker consumers don't get configs prefixed with source.cluster
> --------------------------------------------------------------------
>
> Key: KAFKA-14980
> URL: https://issues.apache.org/jira/browse/KAFKA-14980
> Project: Kafka
> Issue Type: Bug
> Components: mirrormaker
> Affects Versions: 3.5.0
> Reporter: Mickael Maison
> Assignee: Chris Egerton
> Priority: Blocker
> Fix For: 3.5.0
>
>
> As part of KAFKA-14021, we made a change to
> MirrorConnectorConfig.sourceConsumerConfig() to grab all configs that start
> with "source.". Previously it was grabbing configs prefixed with
> "source.cluster.".
> This means existing connector configuration stop working, as configurations
> such as bootstrap.servers are not passed to source consumers.
> For example, the following connector configuration was valid in 3.4 and now
> makes the connector tasks fail:
> {code:json}
> {
> "connector.class":
> "org.apache.kafka.connect.mirror.MirrorSourceConnector",
> "name": "source",
> "topics": "test",
> "tasks.max": "30",
> "source.cluster.alias": "one",
> "target.cluster.alias": "two",
> "source.cluster.bootstrap.servers": "localhost:9092",
> "target.cluster.bootstrap.servers": "localhost:29092"
> }
> {code}
> The connector attempts to start source consumers with bootstrap.servers = []
> and the task crash with
> {noformat}
> org.apache.kafka.common.KafkaException: Failed to construct kafka consumer
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:837)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:671)
> at
> org.apache.kafka.connect.mirror.MirrorUtils.newConsumer(MirrorUtils.java:59)
> at
> org.apache.kafka.connect.mirror.MirrorSourceTask.start(MirrorSourceTask.java:103)
> at
> org.apache.kafka.connect.runtime.AbstractWorkerSourceTask.initializeAndStart(AbstractWorkerSourceTask.java:274)
> at
> org.apache.kafka.connect.runtime.WorkerTask.doRun(WorkerTask.java:202)
> at org.apache.kafka.connect.runtime.WorkerTask.run(WorkerTask.java:259)
> at
> org.apache.kafka.connect.runtime.AbstractWorkerSourceTask.run(AbstractWorkerSourceTask.java:75)
> at
> org.apache.kafka.connect.runtime.isolation.Plugins.lambda$withClassLoader$1(Plugins.java:181)
> at
> java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
> at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
> at
> java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
> at
> java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
> at java.base/java.lang.Thread.run(Thread.java:829)
> Caused by: org.apache.kafka.common.config.ConfigException: No resolvable
> bootstrap urls given in bootstrap.servers
> {noformat}
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