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https://issues.apache.org/jira/browse/KAFKA-1523?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dong Lin updated KAFKA-1523:
----------------------------

    Comment: was deleted

(was: python kafka-patch-review.py incorrectly involves needed changes... Need 
to do it again.)

> Implement transaction manager module
> ------------------------------------
>
>                 Key: KAFKA-1523
>                 URL: https://issues.apache.org/jira/browse/KAFKA-1523
>             Project: Kafka
>          Issue Type: New Feature
>            Reporter: Joel Koshy
>            Assignee: Dong Lin
>              Labels: transactions
>         Attachments: KAFKA-1523_2014-07-17_20:12:55.patch
>
>
> * Entry point for transaction requests
> * Appends transaction control records to the transaction journal
> * Sends transaction control records to data brokers
> * Responsible for expiring transactions
> * Supports fail-over: for which it needs to maintain a transaction HW which 
> is the offset of the BEGIN control record of the earliest pending 
> transaction. It should checkpoint the HW periodically either to ZK/separate 
> topic/offset commit.
> The scope of this ticket will be the basic transaction coordinator 
> functionality. E.g., we can just have a basic transaction manager that can 
> begin/commit/abort transactions. No expiration, no fail-over. We will add 
> failure handling in subsequent jiras.



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