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https://issues.apache.org/jira/browse/HDFS-2866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13197499#comment-13197499
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Todd Lipcon commented on HDFS-2866:
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Assuming /homes/hortonha is NFS-mounted (makes sense knowing what I know about
Y grid infrastructure), then you have both of the NNs sharing the same
directory for fsimage, which is incorrect. Also, I wouldn't recommend putting
the fsimage dir inside the edits dir (though I don't see a reason it wouldn't
work, it's certainly nonstandard)
> Standby does not start up due to a gap in transaction id
> --------------------------------------------------------
>
> Key: HDFS-2866
> URL: https://issues.apache.org/jira/browse/HDFS-2866
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha
> Affects Versions: HA branch (HDFS-1623)
> Reporter: Hari Mankude
> Priority: Critical
>
> Standby notices a gap in the transaction id in the shared.edits directory.
> The transactions in dfs.edits.dir does not seem to have the gap. The gap
> happens during a failover.
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