public Set<String> getTopicPubInfo(String topic) {
        return topicPubInfoMap.get(topic);
    }
Get producer IDs for a topic

@param topic  query topic
@return   target published producerId set
inlong-tubemq/tubemq-server/src/main/java/org/apache/inlong/tubemq/server/master/nodemanage/nodebroker/TopicPSInfoManager.java