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https://issues.apache.org/jira/browse/KAFKA-1316?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13996687#comment-13996687
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Jun Rao commented on KAFKA-1316:
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Some of the failure handling seems to be common btw the producer and the 
consumer. Could the logic of handling TopicMetdataRequest be factored into this 
RequestSelector class too?

> Refactor Sender
> ---------------
>
>                 Key: KAFKA-1316
>                 URL: https://issues.apache.org/jira/browse/KAFKA-1316
>             Project: Kafka
>          Issue Type: Sub-task
>          Components: producer 
>            Reporter: Jay Kreps
>            Assignee: Jay Kreps
>
> Currently most of the logic of the producer I/O thread is in Sender.java.
> However we will need to do a fair number of similar things in the new 
> consumer. Specifically:
>  - Track in-flight requests
>  - Fetch metadata
>  - Manage connection lifecycle
> It may be possible to refactor some of this into a helper class that can be 
> shared with the consumer. This will require some detailed thought.



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