What are Kafka retention settings and how do I configure them?
Kafka retention settings determine how long messages are stored in a topic. You can configure them using the retention.ms
and retention.bytes
parameters.
Can you explain what retention.ms
and retention.bytes
mean?
retention.ms
specifies the time in milliseconds to retain messages, while retention.bytes
limits the total size of messages retained.
How do I change these settings for an existing topic?
You can change the settings using the Kafka command line tool with the kafka-configs.sh
script, specifying the topic and the new values.
Are there any default values for these settings?
Yes, the default value for retention.ms
is 7 days (604800000 ms) and for retention.bytes
it is unlimited.
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