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https://issues.apache.org/jira/browse/KAFKA-1179?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13950918#comment-13950918
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Neha Narkhede commented on KAFKA-1179:
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[~noslowerdna] It makes sense to throw an exception and clearly document that
API.
> createMessageStreams() in javaapi.ZookeeperConsumerConnector does not throw
> ---------------------------------------------------------------------------
>
> Key: KAFKA-1179
> URL: https://issues.apache.org/jira/browse/KAFKA-1179
> Project: Kafka
> Issue Type: Bug
> Components: consumer
> Affects Versions: 0.8.0
> Reporter: Vincent Rischmann
>
> In kafka.consumer.javaapi.ZookeeperConsumerConnector.scala, the
> createMessageStreams() directly calls underlying.consume() (line 80)
> In kafka.consumer.ZookeeperConsumerConnector.scala, the
> createMessageStreams() throws an exception if it has been called more than
> once (line 133).
> The javaapi should throw if it is called more than once, just like the scala
> api.
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