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https://issues.apache.org/jira/browse/KAFKA-2734?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14994479#comment-14994479
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ASF GitHub Bot commented on KAFKA-2734:
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Github user asfgit closed the pull request at:
https://github.com/apache/kafka/pull/412
> kafka-console-consumer throws NoSuchElementException on not specifying topic
> ----------------------------------------------------------------------------
>
> Key: KAFKA-2734
> URL: https://issues.apache.org/jira/browse/KAFKA-2734
> Project: Kafka
> Issue Type: Bug
> Components: tools
> Affects Versions: 0.9.0.0
> Reporter: Ashish K Singh
> Assignee: Ashish K Singh
> Fix For: 0.9.0.0
>
>
> The logic of argument checking is flawed for kafka-console-consumer. Throws
> below mentioned exception when topic is not specified. Users wont have a clue
> what went wrong.
> {code}
> Exception in thread "main" java.util.NoSuchElementException: head of empty
> list
> at scala.collection.immutable.Nil$.head(List.scala:337)
> at scala.collection.immutable.Nil$.head(List.scala:334)
> at
> kafka.tools.ConsoleConsumer$ConsumerConfig.<init>(ConsoleConsumer.scala:244)
> at kafka.tools.ConsoleConsumer$.main(ConsoleConsumer.scala:40)
> at kafka.tools.ConsoleConsumer.main(ConsoleConsumer.scala)
> {code}
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