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