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