Updated on 2023-03-24 GMT+08:00

Modifying Topic Parameters


After a topic is created, you can modify the following parameters based on service requirements: the number of read queues, number of write queues, topic permission, and associated brokers.


  1. Log in to the management console.
  2. Click in the upper left corner to select a region.

    Select the region where your RocketMQ instance is located.

  3. Click and choose Application > Distributed Message Service (for RocketMQ) to open the console of DMS for Kafka.
  4. Click a RocketMQ instance to go to the instance details page.
  5. In the navigation pane, choose Topics.
  6. Modify topic parameters using either of the following methods:

    • In the row containing the topic whose parameters you want to modify, click Edit.
    • Click a topic to go to the topic details page and then click Edit in the upper right corner.

  7. Modify topic parameters by referring to Table 1.

    Table 1 Topic parameters




    Topic permission, which can be publish/subscribe, publish, or subscribe.


    Change the number of read queues or write queues.

    • Read queues: total number of available queues in the topic for reading data.
    • Write queues: total number of available queues in the topic for writing data.

    Existing topics can be distributed to new brokers in the following scenarios:

    • If an existing topic is not associated with all brokers during creation, click Add to distribute the topic to more brokers and set the number of read queues and write queues.
    • After increasing the broker quantity, click Add to distribute an existing topic to the new brokers.

  8. Click OK.