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https://issues.apache.org/jira/browse/KAFKA-13718?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17539164#comment-17539164
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Luke Chen commented on KAFKA-13718:
-----------------------------------
Thanks for the answers, [~dengziming] !
[~rjoerger] , as Ziming said, we are unsure the root cause of this issue. Maybe
you can investigate it first, and see if you find anything. My thought is that,
since we didn't provide any new configs during create topics:
_> bin/kafka-topics.sh --create --topic quickstart-events --bootstrap-server
localhost:9092_
So, the describe results should not contain any topic related configs, to avoid
confusing users. As you mentioned, we never document anything about what the
"configs" field should display, but from the code
{code:java}
val configsAsString = config.entries.asScala.filter(!_.isDefault).map { ce =>
s"${ce.name}=${ce.value}" }.mkString(","){code}
We can know it is trying to filter out anything "not default".
So, maybe we should first know why only the "segment.bytes=1073741824" showed
here.
Thanks for your help.
> kafka-topics describe topic with default config will show `segment.bytes`
> overridden config
> --------------------------------------------------------------------------------------------
>
> Key: KAFKA-13718
> URL: https://issues.apache.org/jira/browse/KAFKA-13718
> Project: Kafka
> Issue Type: Bug
> Components: tools
> Affects Versions: 3.1.0, 2.8.1, 3.0.0
> Reporter: Luke Chen
> Priority: Major
> Labels: newbie, newbie++
>
> Following the quickstart guide[1], when describing the topic just created
> with default config, I found there's a overridden config shown:
> _> bin/kafka-topics.sh --describe --topic quickstart-events
> --bootstrap-server localhost:9092_
> _Topic: quickstart-events TopicId: 06zRrzDCRceR9zWAf_BUWQ
> PartitionCount: 1 ReplicationFactor: 1 *Configs:
> segment.bytes=1073741824*_
> _Topic: quickstart-events Partition: 0 Leader: 0 Replicas: 0
> Isr: 0_
>
> This config result should be empty as in Kafka quick start page. Although the
> config value is what we expected (default 1GB value), this info display still
> confuse users.
>
> Note: I checked the 2.8.1 build, this issue also happened.
>
> [1]: [https://kafka.apache.org/quickstart]
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