Jakub Scholz created KAFKA-8053:
-----------------------------------
Summary: 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
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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