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https://issues.apache.org/jira/browse/HDFS-2914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13208208#comment-13208208
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Aaron T. Myers commented on HDFS-2914:
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bq. Like I mentioned earlier, I would like to open a seperate test jira for
this issue.
OK. Please file the JIRA.
bq. Yep, you are right. Since the thread runs every 5 secs, standby->active
will go into safemode in 5 secs when resources are low. If shared edits is not
available at the time of state transition, active will fail within 5 secs. Let
me try this out and update the jira.
Even if the check will necessarily be performed within 5 seconds of becoming
active, we might as well run the check during the process of starting active
services.
> HA: Standby should not enter safemode when resources are low
> ------------------------------------------------------------
>
> 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
> Assignee: Hari Mankude
> Attachments: HDFS-2914-HDFS-1623, HDFS-2914-HDFS-1623,
> HDFS-2914-HDFS-1623.patch, hdfs-2914
>
>
> 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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