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https://issues.apache.org/jira/browse/HDFS-2413?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13171832#comment-13171832
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Harsh J commented on HDFS-2413:
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[~umamaheswararao] - You may want to report that downstream as well -- I
believe they can surely catch SafeModeExceptions or so, and do better?
[[email protected]] - The JMX output at {{/jmx}} carries this state today. Is
that insufficient? I'll consider this inclusion as well, after your reply.
> Add public APIs for safemode
> ----------------------------
>
> Key: HDFS-2413
> URL: https://issues.apache.org/jira/browse/HDFS-2413
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs client
> Affects Versions: 0.23.0
> Reporter: Todd Lipcon
> Assignee: Harsh J
> Fix For: 0.24.0
>
>
> Currently the APIs for safe-mode are part of DistributedFileSystem, which is
> supposed to be a private interface. However, dependent software often wants
> to wait until the NN is out of safemode. Though it could poll trying to
> create a file and catching SafeModeException, we should consider making some
> of these APIs public.
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