[jira] Commented: (HADOOP-4539) Streaming Edits to a Backup Node.

["Clark, Jonathan (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-4539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12868040#action_12868040 ] 

Clark, Jonathan commented on HADOOP-4539:
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I'm out of the office, and unlikely to read email on this account until Tues 8th June.

 -- Jonathan

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> Streaming Edits to a Backup Node.
> ---------------------------------
>
>                 Key: HADOOP-4539
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4539
>             Project: Hadoop Common
>          Issue Type: New Feature
>            Reporter: Konstantin Shvachko
>            Assignee: Konstantin Shvachko
>             Fix For: 0.21.0
>
>         Attachments: BackupNode.patch, BackupNode.patch, BackupNode.patch, BackupNode.patch, BackupNode.patch, BackupNode.patch, image001.gif, StreamEditsToBN.pdf, 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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