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From "Flavio Junqueira (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-2315) BookKeeper for write-ahead logging
Date Wed, 11 Jul 2012 22:21:37 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13412065#comment-13412065

Flavio Junqueira commented on HBASE-2315:

Hi Ted, fs is part of the issue I was discussing before. We don't have a filesystem implementation
for bookkeeper, so we can't use the filesystem instance passed.

About the reader and the writer, I was configuring them in the hbase-default configuration

    <description>The HLog file reader implementation.</description>
    <description>The HLog file writer implementation.</description>

I assumed previously that HLog was instantiated elsewhere.
> 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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