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https://issues.apache.org/jira/browse/HDFS-3518?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13292594#comment-13292594
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Bikas Saha commented on HDFS-3518:
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Seems like the most useful information we can get would be if the NN is in safe
mode or not because the JT can then go into a conservative mode wrt task
failures etc. because these would very likely be related to NN safe mode.
HDFS-2413 seems to fit the bill but its committed to the 2.0 line.
> Provide API to check HDFS operational state
> -------------------------------------------
>
> Key: HDFS-3518
> URL: https://issues.apache.org/jira/browse/HDFS-3518
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs client
> Reporter: Bikas Saha
> Assignee: Tsz Wo (Nicholas), SZE
>
> This will improve the usability of JobTracker safe mode.
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