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https://issues.apache.org/jira/browse/HDFS-16547?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shilun Fan updated HDFS-16547:
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Component/s: namanode
Hadoop Flags: Reviewed
Target Version/s: 3.4.0
Affects Version/s: 3.4.0
> [SBN read] Namenode in safe mode should not be transfered to observer state
> ---------------------------------------------------------------------------
>
> Key: HDFS-16547
> URL: https://issues.apache.org/jira/browse/HDFS-16547
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namanode
> Affects Versions: 3.4.0
> Reporter: Tao Li
> Assignee: Tao Li
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
> Time Spent: 1h 50m
> Remaining Estimate: 0h
>
> Currently, when a Namenode is in safemode(under starting or enter safemode
> manually), we can transfer this Namenode to Observer by command. This
> Observer node may receive many requests and then throw a SafemodeException,
> this causes unnecessary failover on the client.
> So Namenode in safe mode should not be transfer to observer state.
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