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https://issues.apache.org/jira/browse/HDFS-1064?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12975629#action_12975629
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stack commented on HDFS-1064:
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Shared storage as underpinnings of an HA NN strikes me as an odd approach. In
the past, making a service HA, first thing I'd do was remove all dependencies
on NFS.
What is the thinking regards bootstrapping the backup NNs in-memory image? Are
we talking about replay of edit logs still (possibly hours before FS comes back
on line?) or something else? Is there talk of spraying the meta edits across
primary and backup NNs so the backups can come on line the quicker? Thanks.
> NN Availability - umbrella Jira
> -------------------------------
>
> Key: HDFS-1064
> URL: https://issues.apache.org/jira/browse/HDFS-1064
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: Sanjay Radia
>
> This is an umbrella jira for discussing availability of the HDFS NN and
> providing references to other Jiras that improve its availability. This
> includes, but is not limited to, automatic failover.
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