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https://issues.apache.org/jira/browse/HDFS-1276?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13465603#comment-13465603
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Bertrand Dechoux commented on HDFS-1276:
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One question about the need :
* Wouldn't it be possible to have the same as the HDFS web interface ie the
list of namenode storage and their status? If I understand correctly, this
patch will display (if any) failed volumes of datanode (and maybe namenode).
Second, about the patch :
* use "" instead of new String[0]
* The comment or the code about parsing the error message is wrong
=> the error message is : "DataNode failed
volumes:<failed_volume>;<failed_volume>..."
=> but the code split twice on ':', shouldn't it be first on ':' and then on
';' ?
* Isn't that a very fragile way of reporting error? People might use (and so
will use) the report output to do monitoring.
> Add failed volume info to dfsadmin report
> -----------------------------------------
>
> Key: HDFS-1276
> URL: https://issues.apache.org/jira/browse/HDFS-1276
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 0.21.0
> Reporter: Jeff Zhang
> Assignee: Jeff Zhang
> Priority: Minor
> Attachments: HDFS_1276.patch
>
>
> Currently, users do not know which volumes are failed unless he looks into
> the logs, this way is not convenient for users. I plan to put the failed
> volumes in the report of HDFS. Then hdfs administers can use command
> "bin/hadoop dfsadmin -report" to find which volumes are failed.
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