Kafka how to know the latest created partition id for a topic in Java

Question

I am creating partition for a topic dynamically using AdminUtils. I have to get the partitionId of the newly created partition for saving it in Mysql for my business logic. How can I achieve this ? My current code :

 AdminUtils.addPartitions(zkUtils,KAFKA_PRODUCER_TOPIC,currentPartitionCount+1,"",true);

            List<PartitionInfo> infoList = producer.partitionsFor(KAFKA_PRODUCER_TOPIC);
            for(PartitionInfo info : infoList){
                System.out.println(info.partition());
            }
            createdPartionId = infoList.get(0).partition();

Problem with above is that latest created partition is not coming in the PartitionInfo list. Don't know why.producer is the Kafka Producer API.

Answer 1

You can do a TopicMetadataRequest . See the example . You can do one before and after and compare the results. Otherwise, the new partition always gets added with a newPartitionID == previousLastPartitionID + 1