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From "Gwen Shapira (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KAFKA-3006) Make collection default container type for sequences in the consumer API
Date Fri, 22 Jan 2016 03:19:39 GMT

    [ https://issues.apache.org/jira/browse/KAFKA-3006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15111845#comment-15111845
] 

Gwen Shapira commented on KAFKA-3006:
-------------------------------------

I think a short & sweet KIP, just to summarize the discussion and to make sure we are
all on same page will be good.

Any volunteers for writing up the KIP and starting the discussion?


> Make collection default container type for sequences in the consumer API
> ------------------------------------------------------------------------
>
>                 Key: KAFKA-3006
>                 URL: https://issues.apache.org/jira/browse/KAFKA-3006
>             Project: Kafka
>          Issue Type: Improvement
>          Components: clients
>    Affects Versions: 0.9.0.0
>            Reporter: Pierre-Yves Ritschard
>              Labels: patch
>
> The KafkaConsumer API has some annoying inconsistencies in the usage of collection types.
For example, subscribe() takes a list, but subscription() returns a set. Similarly for assign()
and assignment(). We also have pause() , seekToBeginning(), seekToEnd(), and resume() which
annoyingly use a variable argument array, which means you have to copy the result of assignment()
to an array if you want to pause all assigned partitions. We can solve these issues by adding
the following variants:
> {code}
> void subscribe(Collection<String> topics);
> void subscribe(Collection<String> topics, ConsumerRebalanceListener);
> void assign(Collection<TopicPartition> partitions);
> void pause(Collection<TopicPartition> partitions);
> void resume(Collection<TopicPartition> partitions);
> void seekToBeginning(Collection<TopicPartition>);
> void seekToEnd(Collection<TopicPartition>);
> {code}
> This issues supersedes KAFKA-2991



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