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From "Hari A V (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1973) HA: HDFS clients must handle namenode failover and switch over to the new active namenode.
Date Thu, 09 Jun 2011 05:46:58 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1973?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13046352#comment-13046352
] 

Hari A V commented on HDFS-1973:
--------------------------------

Hi Aron,

Can you please elaborate a little bit on your area of interest with ZOOKEEPER-1080? 

If it is for NN HA, i would be very happy to get your comments on the design which i have
suggested, so that i can consider them for the patch. 
I have refered to the NameNode+HA_v2_1.pdf uploaded at HDFS-1623 while preparing the design
doc (that helped me a lot for my design doc). The usecases are almost matching. I am currently
in the process of making the patch ready for submitting.

- Hari

> HA: HDFS clients must handle namenode failover and switch over to the new active namenode.
> ------------------------------------------------------------------------------------------
>
>                 Key: HDFS-1973
>                 URL: https://issues.apache.org/jira/browse/HDFS-1973
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Suresh Srinivas
>            Assignee: Aaron T. Myers
>
> During failover, a client must detect the current active namenode failure and switch
over to the new active namenode. The switch over might make use of IP failover or some thing
more elaborate such as zookeeper to discover the new active.

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