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Date: Sat, 13 Mar 2010 14:07:27 +0000 (UTC)
From: "Flavio Paiva Junqueira (JIRA)" <jira@apache.org>
To: hbase-issues@hadoop.apache.org
Subject: [jira] Updated: (HBASE-2315) BookKeeper for write-ahead logging
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     [ https://issues.apache.org/jira/browse/HBASE-2315?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Flavio Paiva Junqueira updated HBASE-2315:
------------------------------------------

    Attachment: bookkeeperOverview.pdf

Todd, I'm attaching the BK overview document as promised.

> BookKeeper for write-ahead logging
> ----------------------------------
>
>                 Key: HBASE-2315
>                 URL: https://issues.apache.org/jira/browse/HBASE-2315
>             Project: Hadoop HBase
>          Issue Type: New Feature
>          Components: regionserver
>            Reporter: Flavio Paiva Junqueira
>         Attachments: bookkeeperOverview.pdf, HBASE-2315.patch, 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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