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https://issues.apache.org/jira/browse/HDFS-2782?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13185359#comment-13185359
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Sanjay Radia commented on HDFS-2782:
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2 questions:
- If you have multiple dirs within the same NFS server, are you expecting them
to fail independently?
- For multiple NFS servers, will the standby be expected to read from any/all
of them?
> HA: Support multiple shared edits dirs
> --------------------------------------
>
> Key: HDFS-2782
> URL: https://issues.apache.org/jira/browse/HDFS-2782
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha
> Affects Versions: HA branch (HDFS-1623)
> Reporter: Eli Collins
> Assignee: Eli Collins
>
> Supporting multiple shared dirs will improve availability (eg see HDFS-2769).
> You may want to use multiple shared dirs on a single filer (eg for better
> fault isolation) or because you want to use multiple filers/mounts. Per
> HDFS-2752 (and HDFS-2735) we need to do things like use the JournalSet in
> EditLogTailer and add tests.
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