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https://issues.apache.org/jira/browse/HADOOP-942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12643577#action_12643577
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dhruba borthakur commented on HADOOP-942:
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We would like ot minotor dead nodes using a command line script that
periodicaly invokes dfsadmin -report. In this case, we would like to somehow
detect if a datanode is dead. We would like dead nodes to be displayed in the
webUI (it already does this now).
I propose that we modify the output of dfsadmin -report to report the following:
Configured State: In Service/Decommissioned/Decommissioning/Out Of Service
Runtime State : Dead/Alive
> dfsadmin -report returns deadnode as "In Service"
> -------------------------------------------------
>
> Key: HADOOP-942
> URL: https://issues.apache.org/jira/browse/HADOOP-942
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Reporter: Koji Noguchi
> Priority: Trivial
>
> dfsadmin -report returned a deadnode entry as follows.
> Name: hostA.zzz.com:12345
> State : In Service
> Total raw bytes: 0 (0.0 k)
> Used raw bytes: 0 (0.0 k)
> % used: NaN%
> "in service" is confusing for a node that's not running a datanode.
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