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https://issues.apache.org/jira/browse/STORM-391?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14237456#comment-14237456
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ASF GitHub Bot commented on STORM-391:
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Github user Lewuathe commented on the pull request:
https://github.com/apache/storm/pull/338#issuecomment-65977818
There does not seems to be consumer API that throws
`UnknownTopicOrPartitionException`.
[UnknownTopicOrPartitionException in
Kafka](https://github.com/apache/kafka/search?utf8=%E2%9C%93&q=UnknownTopicOrPartitionException)
Can I use this exception for checking existence of topics from consumer?
Anyway `DynamicBrokerReader` already uses [Curator](http://curator.apache.org/)
API which access specific ZK path directly. I think it is not problem to lookup
ZK path from curator.
> KafkaSpout to await for the topic
> ---------------------------------
>
> Key: STORM-391
> URL: https://issues.apache.org/jira/browse/STORM-391
> Project: Apache Storm
> Issue Type: Improvement
> Affects Versions: 0.9.2-incubating
> Reporter: Alexey Raga
> Assignee: Kai Sasaki
> Labels: features
>
> When topic does not yet exist and the consumer is asked to consume from it,
> the default behaviour for Kafka heigh-level consumer is to "await" for the
> topic without a failure.
> KafkaSpout currently fails trying to get the partition information about the
> topic that does not exist.
> It may be a good idea to have the same common behaviour in KafkaSpout and it
> can probably be implemented through the zookeeper watchers: if topic does not
> exist, then set up a watcher and don't do anything until it yields.
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