Configure a Topic

Topic Configuration

Topic configuration refers to the settings that control the behavior and characteristics of a Kafka topic. These configurations can be set at the time of topic creation or modified later.

Core Topic Configuration Options

Option	Description	Example/Default Value
retention.ms	How long (in milliseconds) to retain messages in the topic.	604800000 (7 days)
retention.bytes	Maximum total bytes to retain in the topic.	-1 (unlimited)
cleanup.policy	How old data is removed: delete (default) or compact (log compaction).	delete
min.insync.replicas	Minimum number of replicas that must acknowledge a write for it to be considered successful.	1
segment.bytes	Size of each log segment file.	1073741824 (1 GB)
segment.ms	Time after which a new log segment is rolled.	604800000 (7 days)
max.message.bytes	Maximum size of a single message.	1048576 (1 MiB)
compression.type	Compression algorithm for topic data: gzip, snappy, lz4, zstd, uncompressed, producer.	producer
message.timestamp.type	Whether to use CreateTime or LogAppendTime for message timestamps.	CreateTime

Note

Defaults can vary by Kafka version and broker configuration. Confirm the effective values in your cluster.

For all Apache Kafka topic configuration options, see the Apache Kafka topic configuration reference.

How to change configuration options

Click Topics in the left navigation

Go to the Topics section.

Click the name of the topic to edit

Click on the topic name in the list to open the configuration and metrics popup.

Filter config options by name, value, or source

Edit or delete a configuration option

Perform the specified action.

• Edit Config:
• Delete Config:

Update the configuration value

Update the value to the required value and save changes.