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https://issues.apache.org/jira/browse/KAFKA-1601?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dong Lin updated KAFKA-1601:
----------------------------

    Description: 
Implement buffered consumer logic in ConsumerTransactionBuffer class.

The class takes as input messages from non-transactional consumer (e.g. 
ConsoleConsumer, SimpleConsumer), recognizes transaction control requests (e.g. 
commit, abort), and outputs transaction messages when their transaction is 
committed.

By default, the class outputs non-transactional messages immediately on input.

  was:
Implement buffered consumer logic in ConsumerTransactionBuffer class.

The class takes as input messages from non-transactional consumer (e.g. 
ConsoleConsumer, SimpleConsumer), and outputs transaction messages when their 
transaction is committed.

Depending on the configuration, 


> ConsoleConsumer/SimpleConsumerPerformance should be transaction-aware
> ---------------------------------------------------------------------
>
>                 Key: KAFKA-1601
>                 URL: https://issues.apache.org/jira/browse/KAFKA-1601
>             Project: Kafka
>          Issue Type: Improvement
>            Reporter: Dong Lin
>            Assignee: Dong Lin
>            Priority: Minor
>              Labels: transactions
>         Attachments: KAFKA-1601.patch
>
>
> Implement buffered consumer logic in ConsumerTransactionBuffer class.
> The class takes as input messages from non-transactional consumer (e.g. 
> ConsoleConsumer, SimpleConsumer), recognizes transaction control requests 
> (e.g. commit, abort), and outputs transaction messages when their transaction 
> is committed.
> By default, the class outputs non-transactional messages immediately on input.



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