[jira] Commented: (HADOOP-942) dfsadmin -report returns deadnode as "In Service"

["dhruba borthakur (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12643577#action_12643577 ] 

dhruba borthakur commented on HADOOP-942:
-----------------------------------------

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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