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https://issues.apache.org/jira/browse/KAFKA-6720?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16418090#comment-16418090
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Daniel Wojda commented on KAFKA-6720:
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My mistake [~johnma]. That makes sense. Thank you for explanation!
> Inconsistent Kafka Streams behaviour when topic does not exist
> --------------------------------------------------------------
>
> Key: KAFKA-6720
> URL: https://issues.apache.org/jira/browse/KAFKA-6720
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 1.0.1
> Reporter: Daniel Wojda
> Priority: Minor
>
> When Kafka Streams starts it reads metadata about topics used in topology
> and it's partitions. If topology of that stream contains stateful operation
> like #join, and a topic does not exist
> [TopologyBuilderException|https://github.com/apache/kafka/blob/5bdfbd13524da667289cacb774bb92df36a253f2/streams/src/main/java/org/apache/kafka/streams/processor/internals/StreamPartitionAssignor.java#L719]
> will be thrown.
> In case of streams with simple topology with stateless operations only, like
> #mapValue, and topic does not exist, Kafka Streams does not throw any
> exception, just logs a warning:
> ["log.warn("No partitions found for topic {}",
> topic);"|https://github.com/apache/kafka/blob/5bdfbd13524da667289cacb774bb92df36a253f2/streams/src/main/java/org/apache/kafka/streams/processor/internals/StreamPartitionAssignor.java#L435]
>
> I believe the behaviour of Kafka Streams in both cases should be the same,
> and it should throw TopologyBuilderException.
> I am more than happy to prepare a Pull Request if it is a valid issue.
>
>
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