[jira] [Commented] (KAFKA-2388) subscribe(topic)/unsubscribe(topic) should either take a callback to allow user to handle exceptions or it should be synchronous.

[ASF GitHub Bot (JIRA)]

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https://issues.apache.org/jira/browse/KAFKA-2388?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14715798#comment-14715798
 ] 

ASF GitHub Bot commented on KAFKA-2388:
---------------------------------------

Github user asfgit closed the pull request at:

    https://github.com/apache/kafka/pull/139


> subscribe(topic)/unsubscribe(topic) should either take a callback to allow 
> user to handle exceptions or it should be synchronous.
> ---------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: KAFKA-2388
>                 URL: https://issues.apache.org/jira/browse/KAFKA-2388
>             Project: Kafka
>          Issue Type: Sub-task
>            Reporter: Jiangjie Qin
>            Assignee: Jason Gustafson
>             Fix For: 0.8.3
>
>
> According to the mailing list discussion on the consumer interface, we'll 
> replace:
> {code}
> public void subscribe(String... topics);
> public void subscribe(TopicPartition... partitions);
> public Set<TopicPartition> subscriptions();
> {code}
> with:
> {code}
> void subscribe(List<String> topics, RebalanceCallback callback);
> void assign(List<TopicPartition> partitions);
> List<String> subscriptions();
> List<TopicPartition> assignments();
> {code}
> We don't need the unsubscribe APIs anymore.
> The RebalanceCallback would look like:
> {code}
> interface RebalanceCallback {
>   void onAssignment(List<TopicPartition> partitions);
>   void onRevocation(List<TopicPartition> partitions);
>   // handle non-existing topics, etc.
>   void onError(Exception e);
> }
> {code}



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