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https://issues.apache.org/jira/browse/KAFKA-1316?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13991379#comment-13991379
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Guozhang Wang commented on KAFKA-1316:
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I think we also need to refactor out the accumulator and the preparation logic
(ready, processReadyPartitions, drain, collocate) out of Sender.
> 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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