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Modifying the Topic Configuration

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Last updated: 2025-12-24 14:59:00
After creating a topic, you can modify its configurations based on your business requirements, such as adjusting the number of partitions, enabling or disabling isolation of abnormal consumers, to optimize message throughput performance and enhance reliability.

Constraints and Limitations

After a topic is created, the topic name and the topic type cannot be modified.

Operation Steps

2. In the left sidebar, choose Topic , find the topic that needs to be edited, and choose More > Edit in the operation column.
3. Edit the topic information in the pop-up dialog box.
Parameter
Description
Number of Partitions
After enabling partitioning for a topic, you need to configure the number of partitions, which supports 1 to 32 partitions. TDMQ for Apache Pulsar can ensure message ordering within a single partition; that is, if you create a topic with 1 partition, global sequentiality of messages can be guaranteed. Multiple partitions can improve the production and consumption performance of a single topic, but cannot ensure sequentiality.
Isolate Abnormal Consumer
It can be enabled and disabled, and it is disabled by default. When it is enabled, the default acknowledgment timeout period is 1 minute.
TDMQ for Apache Pulsar allows the server to proactively isolate abnormal consumers, with an optional acknowledgment timeout period. The acknowledgment timeout period can be set from 1 minute to 24 hours.
For scenarios and use cases about abnormal consumer isolation, see Abnormal Consumer Isolation.
Enable this feature only after you clearly understand the applicable scenarios of this feature to avoid unnecessary impact on your production system.
Description
Enter the topic description, with a string of no more than 128 characters.
4. Click Submit to complete the editing of the topic.



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