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Date: Thu, 28 Apr 2011 20:19:03 +0000 (UTC)
From: "Jitendra Nath Pandey (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HDFS-1799) Refactor log rolling and filename
 management out of FSEditLog
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    [ https://issues.apache.org/jira/browse/HDFS-1799?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13026660#comment-13026660 ] 

Jitendra Nath Pandey commented on HDFS-1799:
--------------------------------------------

Todd, 
  I have uploaded a design document for edit log interface in HDFS-1580 which is based on Ivan's earlier proposal and on the discussions I have had with Sanjay, Suresh and Ivan. Please take a look. 

> Refactor log rolling and filename management out of FSEditLog
> -------------------------------------------------------------
>
>                 Key: HDFS-1799
>                 URL: https://issues.apache.org/jira/browse/HDFS-1799
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>    Affects Versions: Edit log branch (HDFS-1073)
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>             Fix For: Edit log branch (HDFS-1073)
>
>         Attachments: 0001-Added-state-management-to-FSEditLog.patch, 0002-Standardised-error-pattern.patch, 0003-Add-JournalFactory-and-move-divert-revert-out-of-FSE.patch, HDFS-1799-all.diff, hdfs-1799.txt, hdfs-1799.txt, hdfs-1799.txt
>
>
> This is somewhat similar to HDFS-1580, but less ambitious. While that JIRA focuses on pluggability, this task is simply the minimum needed for HDFS-1073:
> - Refactor the filename-specific code for rolling, diverting, and reverting log streams out of FSEditLog into a new class
> - Clean up the related code in FSEditLog a bit
> Notably, this JIRA is going to temporarily break the BackupNode. I plan to circle back on the BackupNode later on this branch.

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