horizonzy opened a new issue #2580:
URL: https://github.com/apache/rocketmq/issues/2580
**FEATURE REQUEST**
1. Please describe the feature you are requesting.
```
{
TopicPublishInfo publishInfo =
topicRouteData2TopicPublishInfo(topic, topicRouteData);
publishInfo.setHaveTopicRouterInfo(true);
Iterator<Entry<String, MQProducerInner>> it
= this.producerTable.entrySet().iterator();
while (it.hasNext()) {
Entry<String, MQProducerInner> entry =
it.next();
MQProducerInner impl = entry.getValue();
if (impl != null) {
impl.updateTopicPublishInfo(topic,
publishInfo);
}
}
}
// Update sub info
{
Set<MessageQueue> subscribeInfo =
topicRouteData2TopicSubscribeInfo(topic, topicRouteData);
Iterator<Entry<String, MQConsumerInner>> it
= this.consumerTable.entrySet().iterator();
while (it.hasNext()) {
Entry<String, MQConsumerInner> entry =
it.next();
MQConsumerInner impl = entry.getValue();
if (impl != null) {
impl.updateTopicSubscribeInfo(topic,
subscribeInfo);
}
}
}
```
Now whatever producerTable or consumerTable is empty, it will transfer
topicRouteData to publishInfo and subscribeInfo.
In fact, if producerTable is empty, it's unnecessary to transfer
topicRouteData to publishInfo, if consumerTable is empty,
it's unnecessary to transfer topicRouteData to subscribeInfo.
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