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https://issues.apache.org/jira/browse/HDFS-2914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13203124#comment-13203124
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Hari Mankude commented on HDFS-2914:
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Hi Aaron,
The issue I see is that even if this standby is made active later on, it will
not exit out of the safemode unless user does the safemode leave. Do we want
this behaviour? The other problem with this approach is that if nfs dir bounces
even once, standby will go into safemode and this will happen silently without
alerts.
> HA: Standby stuck in safemode when shared edits directory is bounced
> --------------------------------------------------------------------
>
> Key: HDFS-2914
> URL: https://issues.apache.org/jira/browse/HDFS-2914
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha, name-node
> Affects Versions: HA branch (HDFS-1623)
> Reporter: Hari Mankude
>
> When shared edits dir is bounced, standby NN is put into safemode by the
> NameNodeResourceMonitor(). However, there is no path for it to exit out of
> safe mode when shared edits dir reappears.
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