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https://issues.apache.org/jira/browse/HDFS-2692?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13173775#comment-13173775
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Todd Lipcon commented on HDFS-2692:
-----------------------------------
btw, this patch is on top of HDFS-2693 and HDFS-1972. It also seems to have
some issues related to BackupNode and CheckpointNode tests - working through
those now but the gist of it is still worth reviewing.
> HA: Bugs related to failover from/into safe-mode
> ------------------------------------------------
>
> Key: HDFS-2692
> URL: https://issues.apache.org/jira/browse/HDFS-2692
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha, name-node
> Affects Versions: HA branch (HDFS-1623)
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Critical
> Attachments: hdfs-2692.txt
>
>
> In testing I saw an AssertionError come up several times when I was trying to
> do failover between two NNs where one or the other was in safe-mode. Need to
> write some unit tests to try to trigger this -- hunch is it has something to
> do with the treatment of "safe block count" while tailing edits in safemode.
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