[KAFKA-2734] kafka-console-consumer throws NoSuchElementException on not specifying topic

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.9.0.0
• Fix Version/s: 0.9.0.0
• Component/s: tools
• Assignee: Ashish Singh
• Reporter: Ashish Singh
• Created: 03/Nov/15 22:41
• Updated: 06/Nov/15 21:36
• Resolved: 06/Nov/15 21:36

Description

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.

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)