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https://issues.apache.org/jira/browse/KAFKA-8053?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16785817#comment-16785817
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ASF GitHub Bot commented on KAFKA-8053:
---------------------------------------
scholzj commented on pull request #6381: KAFKA-8053: Provide better error in
kafka-topics.sh message when topi…
URL: https://github.com/apache/kafka/pull/6381
…c doesn't exist
This PR tries to address
[KAFKA-8053](https://issues.apache.org/jira/browse/KAFKA-8053). It passes the
option with which the user originally called the `kafka-topics.sh` tool to the
`ensureTopicExists` method to try to produce better error message. It also
handles the case when the user doesn't specify any topics at all (which is for
example allowed for `--describe`).
If you prefer to address this differently, let me know and I can update the
PR.
### Committer Checklist (excluded from commit message)
- [ ] Verify design and implementation
- [ ] Verify test coverage and CI build status
- [ ] Verify documentation (including upgrade notes)
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> kafka-topics.sh gives confusing error message when the topic doesn't exist
> --------------------------------------------------------------------------
>
> Key: KAFKA-8053
> URL: https://issues.apache.org/jira/browse/KAFKA-8053
> Project: Kafka
> Issue Type: Bug
> Reporter: Jakub Scholz
> Priority: Minor
>
> The kafka-topics.sh utility gives a confusing message when the topic it is
> called with doesn't exist or when no topics exist at all:
> {code}
> bin/kafka-topics.sh --zookeeper localhost:2181 --describe --topic xxx
> Error while executing topic command : Topics in [] does not exist
> [2019-03-06 13:26:33,982] ERROR java.lang.IllegalArgumentException: Topics in
> [] does not exist
> at
> kafka.admin.TopicCommand$.kafka$admin$TopicCommand$$ensureTopicExists(TopicCommand.scala:416)
> at
> kafka.admin.TopicCommand$ZookeeperTopicService.describeTopic(TopicCommand.scala:332)
> at kafka.admin.TopicCommand$.main(TopicCommand.scala:66)
> at kafka.admin.TopicCommand.main(TopicCommand.scala)
> (kafka.admin.TopicCommand$)
> {code}
> It tries to list the topics, but because list of topics is always empty, it
> always prints just `[]`. The error message should be more useful and instead
> list the topic passed by the user as the parameter or not try to list
> anything at all.
>
>
>
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