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Andrea Cosentino updated CAMEL-9835: ------------------------------------ Fix Version/s: 2.17.1 > Enable kafka consumer to subcribe to multiple topics > ----------------------------------------------------- > > Key: CAMEL-9835 > URL: https://issues.apache.org/jira/browse/CAMEL-9835 > Project: Camel > Issue Type: Wish > Components: camel-kafka > Affects Versions: 2.17.0 > Environment: Any > Reporter: Jose Luis Pedrosa > Assignee: Andrea Cosentino > Priority: Minor > Fix For: 2.17.1, 2.18.0 > > Original Estimate: 10m > Remaining Estimate: 10m > > Kafka supports that one consumer is subcriber to multple topics. In their api > when you start the consumer you MUST provide an Array of topics. > If we look in /java/org/apache/camel/component/kafka/KafkaConsumer.java > Currently this is the piece of code that starts the subscriber: > {code} > LOG.debug("Subscribing {} to topic {}", threadId, topicName); > consumer.subscribe(Arrays.asList(topicName)); > {code} > just simply allowing the comma separated topic syntax and replacing one line > of code (and the documentation) it would be working. > {code} > LOG.debug("Subscribing {} to topic {}", threadId, topicName); > consumer.subscribe(Arrays.asList(topicName.split(","))); > {code} > Despite the same could be achieved by adding more consumers (rotues) this > causes a significant amount of load (because of the commits) to kafka, so > this really helps to improve performance. > the topic has been already marked as mandatory, so that should keep the > nullpointer safe. > @UriParam @Metadata(required = "true") > private String topic; > thanks! -- This message was sent by Atlassian JIRA (v6.3.4#6332)