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https://issues.apache.org/jira/browse/HDFS-11088?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15635079#comment-15635079
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Yiqun Lin commented on HDFS-11088:
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Thanks [~andrew.wang] and [~liuml07]!
> Quash unnecessary safemode WARN message during NameNode startup
> ---------------------------------------------------------------
>
> Key: HDFS-11088
> URL: https://issues.apache.org/jira/browse/HDFS-11088
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 3.0.0-alpha1
> Reporter: Andrew Wang
> Assignee: Yiqun Lin
> Priority: Trivial
> Labels: newbie
> Fix For: 2.9.0, 3.0.0-alpha2
>
> Attachments: HDFS-11088.001.patch, HDFS-11088.002.patch,
> HDFS-11088.003.patch
>
>
> I tried starting a NameNode on a freshly formatted cluster, and it produced
> this WARN log:
> {noformat}
> 16/11/01 16:42:44 WARN blockmanagement.BlockManagerSafeMode: forceExit used
> when normal exist would suffice. Treating force exit as normal safe mode exit.
> {noformat}
> I didn't do any special commands related to safemode, so this log should be
> quashed.
> I didn't try the branch-2's, but it's likely this issue exists there as well.
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