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https://issues.apache.org/jira/browse/HADOOP-4539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12675084#action_12675084
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dhruba borthakur commented on HADOOP-4539:
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Hi Konstantin, this is very interesting. I will wait for your design doc. A few
short questions in the meantime:
1. Will this support having multiple Backup nodes for a single namenode?
2. What are the pros-and-cons of this effort vs the Bookkeeper integration
(HADOOP-5189)?
> 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
> Assignee: Konstantin Shvachko
> Attachments: BackupNode.patch, image001.gif, 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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