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https://issues.apache.org/jira/browse/HDFS-16316?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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JiangHua Zhu updated HDFS-16316:
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Attachment: screenshot-4.png
> Improve DataNode to calculate used capacity
> -------------------------------------------
>
> Key: HDFS-16316
> URL: https://issues.apache.org/jira/browse/HDFS-16316
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Affects Versions: 2.9.2
> Reporter: JiangHua Zhu
> Assignee: JiangHua Zhu
> Priority: Major
> Attachments: screenshot-1.png, screenshot-2.png, screenshot-3.png,
> screenshot-4.png
>
>
> Something unusual happened in the online environment.
> The DataNode is configured with 11 disks (${dfs.datanode.data.dir}). It is
> normal for 10 disks to calculate the used capacity, and the calculated value
> for the other 1 disk is much larger, which is very strange.
> This is about the live view on the NameNode:
> !screenshot-1.png!
> This is about the live view on the DataNode:
> !screenshot-2.png!
> We can look at the view on linux:
> !screenshot-3.png!
> There is a big gap here, regarding'/mnt/dfs/11/data'. This situation should
> be prohibited from happening.
> I found that there are some abnormal block files.
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