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Posted to common-dev@hadoop.apache.org by "Konstantin Shvachko (JIRA)" <ji...@apache.org> on 2008/10/29 20:20:44 UTC

[jira] Updated: (HADOOP-4539) Streaming Edits to a Standby Name-Node.

     [ https://issues.apache.org/jira/browse/HADOOP-4539?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Konstantin Shvachko updated HADOOP-4539:
----------------------------------------

    Attachment: StreamEditsToSNN.htm

This is the design document for review.

> Streaming Edits to a Standby Name-Node.
> ---------------------------------------
>
>                 Key: HADOOP-4539
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4539
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: dfs
>            Reporter: Konstantin Shvachko
>             Fix For: 0.20.0
>
>         Attachments: StreamEditsToSNN.htm
>
>
> Currently Secondary name-node acts as mere checkpointer.
> Secondary name-node should be transformed into a standby name-node (SNN). 
> The long term goal is to make it a warm standby. 
> The purpose of this issue is to provide real time streaming of edits to SNN so that it contained the up-to-date namespace state.

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