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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-3541) Namespace recovery from the secondary image should be documented.
Date Tue, 24 Jun 2008 22:59:46 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-3541?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Konstantin Shvachko updated HADOOP-3541:
----------------------------------------

    Attachment: SecondaryDoc.patch

It is a good idea to document fs.checkpoint.period and .size properties. I did that.
By saying "create empty directory" I actually mean creating an empty directory that is the
one that does not 
contain anything inside. Don' know how to clarify it better.
Yes you are right that the implementation checks only that the directory does not contain
a legal image,
but I think the documentation should say empty directory, that way there will be no confusion
if we ever 
change any thing in the internal directory structure.
I thought we commit xml files as well as the generated by forrest html and pdf files. So my
patch contains all three.
Please let me know if this is wrong.

> Namespace recovery from the secondary image should be documented.
> -----------------------------------------------------------------
>
>                 Key: HADOOP-3541
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3541
>             Project: Hadoop Core
>          Issue Type: Task
>          Components: dfs, documentation
>    Affects Versions: 0.18.0
>            Reporter: Konstantin Shvachko
>            Assignee: Konstantin Shvachko
>            Priority: Blocker
>             Fix For: 0.18.0
>
>         Attachments: SecondaryDoc.patch, SecondaryDoc.patch
>
>
> HADOOP-2585 introduced a new feature which lets starting name-node from an image stored
on the secondary node.
> This need to be documented in "HDFS Admin Guide".

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