sijie commented on a change in pull request #2400: Dead Letter Topic
URL: https://github.com/apache/incubator-pulsar/pull/2400#discussion_r211357018
##########
File path:
pulsar-broker/src/main/java/org/apache/pulsar/broker/service/persistent/PersistentDispatcherMultipleConsumers.java
##########
@@ -132,11 +160,45 @@ public synchronized void addConsumer(Consumer consumer)
throws BrokerServiceExce
throw new ConsumerBusyException("Subscription reached max
consumers limit");
}
+ deadLetterTopicProducer = newDeadLetterProducer();
+
consumerList.add(consumer);
consumerList.sort((c1, c2) -> c1.getPriorityLevel() -
c2.getPriorityLevel());
consumerSet.add(consumer);
}
+ private ProducerImpl<byte[]> newDeadLetterProducer() throws
BrokerServiceException {
+ if (maxRedeliveryCount > 0 && deadLetterTopicProducer == null) {
+ try {
+ if (maxRedeliveryCount > 0 &&
StringUtils.isBlank(deadLetterTopic)) {
+ deadLetterTopic = String.format("%s-%s-DLQ",
topic.getName(), Codec.decode(cursor.getName()));
+ }
+ return (ProducerImpl<byte[]>)
topic.getBrokerService().pulsar().getClient().newProducer(Schema.BYTES)
+ .topic(deadLetterTopic)
+ .enableBatching(false)
Review comment:
any thoughts about why you need to disable batching?
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