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https://issues.apache.org/jira/browse/HDFS-1623?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13208152#comment-13208152
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Todd Lipcon commented on HDFS-1623:
-----------------------------------

Hi Mingjie,

Yes, the first cut doesn't include automatic failover. We plan to implement 
automatic failover as a follow-up after this is merged to trunk (manual 
failover addresses a lot of important use cases).
                
> High Availability Framework for HDFS NN
> ---------------------------------------
>
>                 Key: HDFS-1623
>                 URL: https://issues.apache.org/jira/browse/HDFS-1623
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>            Reporter: Sanjay Radia
>            Assignee: Sanjay Radia
>         Attachments: HA-tests.pdf, HDFS-High-Availability.pdf, NameNode 
> HA_v2.pdf, NameNode HA_v2_1.pdf, Namenode HA Framework.pdf, ha-testplan.pdf, 
> ha-testplan.tex
>
>


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