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From "Todd Lipcon (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1623) High Availability Framework for HDFS NN
Date Wed, 14 Mar 2012 19:28:47 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1623?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13229534#comment-13229534
] 

Todd Lipcon commented on HDFS-1623:
-----------------------------------

Hi Avik. The multi-SBN approach is actually very nearly implemented by what's in trunk. The
main missing pieces are actually in the more trivial bits -- for example, we have a few bits
of the code that look up "the other node" for operations like triggering checkpoints. Those
would have to be modified a bit to "look up the active node" instead. But nothing fundamental
or really difficult.
                
> 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
>             Fix For: 0.24.0, 0.23.3
>
>         Attachments: HA-tests.pdf, HDFS-1623.rel23.patch, HDFS-1623.trunk.patch, HDFS-High-Availability.pdf,
NameNode HA_v2.pdf, NameNode HA_v2_1.pdf, Namenode HA Framework.pdf, dfsio-results.tsv, ha-testplan.pdf,
ha-testplan.tex
>
>


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