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https://issues.apache.org/jira/browse/HBASE-2315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13400870#comment-13400870
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Jesse Yates commented on HBASE-2315:
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@Flavio  - yup, that's what I was getting at.
                
> BookKeeper for write-ahead logging
> ----------------------------------
>
>                 Key: HBASE-2315
>                 URL: https://issues.apache.org/jira/browse/HBASE-2315
>             Project: HBase
>          Issue Type: New Feature
>          Components: regionserver
>            Reporter: Flavio Junqueira
>         Attachments: HBASE-2315.patch, bookkeeperOverview.pdf, 
> zookeeper-dev-bookkeeper.jar
>
>
> BookKeeper, a contrib of the ZooKeeper project, is a fault tolerant and high 
> throughput write-ahead logging service. This issue provides an implementation 
> of write-ahead logging for hbase using BookKeeper. Apart from expected 
> throughput improvements, BookKeeper also has stronger durability guarantees 
> compared to the implementation currently used by hbase.

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